Fossil

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

   cd win; nmake /f Makefile.msc

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


BUILDING OUTSIDE THE SOURCE TREE

An out of source build is pretty easy:

  real makefile in src/main.mk.  The src/main.mk makefile is
  automatically generated by a TCL script found at src/makemake.tcl.
  Do not edit src/main.mk directly.  Update src/makemake.tcl and
  then rerun it.

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

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

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

Additional information on the build process is available from
http://www.fossil-scm.org/fossil/doc/trunk/www/makefile.wiki

Copyright 2007 D. Richard Hipp. All rights reserved.

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

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

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

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

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

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

LIB = @LDFLAGS@ @EXTRA_LDFLAGS@ @LIBS@
TCC += @EXTRA_CFLAGS@ @CPPFLAGS@ @CFLAGS@ -DHAVE_AUTOCONFIG_H
INSTALLDIR =$(DESTDIR)@prefix@/bin
USE_SYSTEM_SQLITE = @USE_SYSTEM_SQLITE@



SQLITE_CFLAGS += -DSQLITE_WIN32_NO_ANSI
SQLITE_CFLAGS += -DSQLITE_WIN32_MAX_PATH_BYTES=4096
SQLITE_CFLAGS += -DSQLITE_MAX_MMAP_SIZE=0x7fff0000

include $(SRCDIR)/main.mk

distclean: clean

#
TCLSH = tclsh

LIB =	@LDFLAGS@ @EXTRA_LDFLAGS@ @LIBS@
TCC +=	@EXTRA_CFLAGS@ @CPPFLAGS@ @CFLAGS@ -DHAVE_AUTOCONFIG_H
INSTALLDIR = $(DESTDIR)@prefix@/bin
USE_SYSTEM_SQLITE = @USE_SYSTEM_SQLITE@




include $(SRCDIR)/main.mk

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

#    # no-op.  Markdown is now enabled by default.
#}

if {[opt-bool static]} {
    # XXX: This will not work on all systems.
    define-append EXTRA_LDFLAGS -static
}












set tclpath [opt-val with-tcl]
if {$tclpath ne ""} {
    set tclprivatestubs [opt-bool with-tcl-private-stubs]
    # Note parse-tclconfig-sh is in autosetup/local.tcl
    if {$tclpath eq "1"} {
        if {$tclprivatestubs} {

            }
        }
    } else {
        user-error "OpenSSL not found. Consider --with-openssl=none to disable HTTPS support"
    }
}

# Check for zlib, using the given location if specified
set zlibpath [opt-val with-zlib]
if {$zlibpath ne ""} {
    cc-with [list -cflags "-I$zlibpath -L$zlibpath"]
    define-append EXTRA_CFLAGS -I$zlibpath
    define-append EXTRA_LDFLAGS -L$zlibpath
}
if {![cc-check-includes zlib.h] || ![cc-check-function-in-lib inflateEnd z]} {
    user-error "zlib not found please install it or specify the location with --with-zlib"
}

if {[opt-bool lineedit]} {
    # Need readline-compatible line editing
    cc-with {-includes stdio.h} {
        if {[cc-check-includes readline/readline.h] && [cc-check-function-in-lib readline readline]} {
            msg-result "Using readline for line editing"
        } elseif {[cc-check-includes editline/readline.h] && [cc-check-function-in-lib readline edit]} {
            define-feature editline

    # Last resort, may be Windows
    if {[string match *mingw* [get-define host]]} {
        define-append LIBS -lwsock32
    }
}
cc-check-function-in-lib iconv iconv

# Check for getloadavg(), and if it doesn't exist, define FOSSIL_OMIT_LOAD_AVERAGE
if {![cc-check-functions getloadavg]} {
  define FOSSIL_OMIT_LOAD_AVERAGE 1
}

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

make-template Makefile.in
make-template Makefile.Cygwin.in
make-config-header autoconfig.h -auto {USE_* FOSSIL_*}

#include <assert.h>
#include <dirent.h>
#include "cygsup.h"

/*
** This routine returns the names of files in a working checkout that
** are created by Fossil itself, and hence should not be added, deleted,
** or merge, and should be omitted from "clean" and "extras" lists.
**
** Return the N-th name.  The first name has N==0.  When all names have
** been used, return 0.
*/
const char *fossil_reserved_name(int N, int omitRepo){
  /* Possible names of the local per-checkout database file and
  ** its associated journals

**
** The --ignore and --clean options are comma-separate lists of glob patterns
** for files to be excluded.  Example:  '*.o,*.obj,*.exe'  If the --ignore
** option does not appear on the command line then the "ignore-glob" setting
** is used.  If the --clean option does not appear on the command line then
** the "clean-glob" setting is used.
**
** If files are attempted to be added explicitly on the command line which
** match "ignore-glob", a confirmation is asked first. This can be prevented
** using the -f|--force option.
**
** The --case-sensitive option determines whether or not filenames should
** be treated case sensitive or not. If the option is not given, the default
** depends on the global setting, or the operating system default, if not set.
**
** Options:
**
**    --case-sensitive <BOOL> override case-sensitive setting
**    --dotfiles              include files beginning with a dot (".")   
**    -f|--force              Add files without prompting
**    --ignore <CSG>          ignore files matching patterns from the 
**                            comma separated list of glob patterns.
**    --clean <CSG>           also ignore files matching patterns from
**                            the comma separated list of glob patterns.
** 
** See also: addremove, rm
*/
void add_cmd(void){
  int i;                     /* Loop counter */
  int vid;                   /* Currently checked out version */
  int nRoot;                 /* Full path characters in g.zLocalRoot */
  const char *zCleanFlag;    /* The --clean option or clean-glob setting */
  const char *zIgnoreFlag;   /* The --ignore option or ignore-glob setting */
  Glob *pIgnore, *pClean;    /* Ignore everything matching the glob patterns */
  unsigned scanFlags = 0;    /* Flags passed to vfile_scan() */
  int forceFlag;

  zCleanFlag = find_option("clean",0,1);
  zIgnoreFlag = find_option("ignore",0,1);
  forceFlag = find_option("force","f",0)!=0;
  if( find_option("dotfiles",0,0)!=0 ) scanFlags |= SCAN_ALL;
  capture_case_sensitive_option();
  db_must_be_within_tree();
  if( zCleanFlag==0 ){
    zCleanFlag = db_get("clean-glob", 0);
  }
  if( zIgnoreFlag==0 ){

      vfile_scan(&fullName, nRoot-1, scanFlags, pClean, pIgnore);
    }else if( isDir==0 ){
      fossil_warning("not found: %s", zName);
    }else if( file_access(zName, R_OK) ){
      fossil_fatal("cannot open %s", zName);
    }else{
      char *zTreeName = &zName[nRoot];
      if( !forceFlag && glob_match(pIgnore, zTreeName) ){
        Blob ans;
        char cReply;
        char *prompt = mprintf("file \"%s\" matches \"ignore-glob\".  "
                               "Add it (a=all/y/N)? ", zTreeName);
        prompt_user(prompt, &ans);
        cReply = blob_str(&ans)[0];
        blob_reset(&ans);
        if( cReply=='a' || cReply=='A' ){
          forceFlag = 1;
        }else if( cReply!='y' && cReply!='Y' ){
          blob_reset(&fullName);
          continue;
        }
      }
      db_multi_exec(
         "INSERT OR IGNORE INTO sfile(x) VALUES(%Q)",
         zTreeName
      );
    }
    blob_reset(&fullName);
  }

**
** Usage: %fossil addremove ?OPTIONS?
**
** Do all necessary "add" and "rm" commands to synchronize the repository
** with the content of the working checkout:
**
**  *  All files in the checkout but not in the repository (that is,
**     all files displayed using the "extras" command) are added as
**     if by the "add" command.
**
**  *  All files in the repository but missing from the checkout (that is,
**     all files that show as MISSING with the "status" command) are
**     removed as if by the "rm" command.
**
** The command does not "commit".  You must run the "commit" separately

    const char *zFrom = db_column_text(&q, 0);
    const char *zTo = db_column_text(&q, 1);
    mv_one_file(vid, zFrom, zTo);
  }
  db_finalize(&q);
  db_end_transaction(0);
}

/*
** Function for stash_apply to be able to restore a file and indicate
** newly ADDED state.
*/
int stash_add_files_in_sfile(int vid){
  return add_files_in_sfile(vid);
}

    if( zValue[0] ){
      blob_appendf(pExtra, " --%s %s", zArg, zValue);
    }else{
      blob_appendf(pExtra, " --%s \"\"", zArg);
    }
  }
}
static void collect_argv(Blob *pExtra, int iStart){
  int i;
  for(i=iStart; i<g.argc; i++){
    blob_appendf(pExtra, " %s", g.argv[i]);
  }
}


/*
** COMMAND: all
**
** Usage: %fossil all (changes|clean|extras|ignore|list|ls|pull|push|rebuild|sync)
**
** The ~/.fossil file records the location of all repositories for a
** user.  This command performs certain operations on all repositories
** that can be useful before or after a period of disconnected operation.
**
** On Win32 systems, the file is named "_fossil" and is located in
** %LOCALAPPDATA%, %APPDATA% or %HOMEPATH%.

**               effects cannot be undone.  Use of the --dry-run option to
**               carefully review the local checkouts to be operated upon
**               and the --whatif option to carefully review the files to
**               be deleted beforehand is highly recommended.  The command
**               line options supported by the clean command itself, if any
**               are present, are passed along verbatim.
**
**    extras     Shows "extra" files from all local checkouts.  The command
**               line options supported by the extra command itself, if any
**               are present, are passed along verbatim.
**
**    ignore     Arguments are repositories that should be ignored by
**               subsequent clean, extras, list, pull, push, rebuild, and
**               sync operations.  The -c|--ckout option causes the listed
**               local checkouts to be ignored instead.
**
**    list | ls  Display the location of all repositories.  The -c|--ckout
**               option causes all local checkouts to be listed instead.
**
**    pull       Run a "pull" operation on all repositories.  Only the
**               --verbose option is supported.
**
**    push       Run a "push" on all repositories.  Only the --verbose
**               option is supported.
**
**    rebuild    Rebuild on all repositories.  The command line options
**               supported by the rebuild command itself, if any are
**               present, are passed along verbatim.  The --force and
**               --randomize options are not supported.
**
**    sync       Run a "sync" on all repositories.  Only the --verbose
**               option is supported.
**
**    setting    Run the "setting", "set", or "unset" commands on all
**    set        repositories.  These command are particularly useful in
**    unset      conjunection with the "max-loadavg" setting which cannot
**               otherwise be set globally.
**
** Repositories are automatically added to the set of known repositories
** when one of the following commands are run against the repository:
** clone, info, pull, push, or sync.  Even previously ignored repositories
** are added back to the list of repositories by these commands.
**
** Options:
**   --showfile     Show the repository or checkout being operated upon.
**   --dontstop     Continue with other repositories even after an error.
**   --dry-run      If given, display instead of run actions.
*/
void all_cmd(void){
  int n;
  Stmt q;
  const char *zCmd;
  char *zSyscmd;
  char *zFossil;
  char *zQFilename;
  Blob extra;
  int useCheckouts = 0;
  int quiet = 0;
  int dryRunFlag = 0;
  int showFile = find_option("showfile",0,0)!=0;
  int stopOnError = find_option("dontstop",0,0)==0;
  int rc;
  int nToDel = 0;
  
  dryRunFlag = find_option("dry-run","n",0)!=0;
  if( !dryRunFlag ){
    dryRunFlag = find_option("test",0,0)!=0; /* deprecated */
  }

  if( g.argc<3 ){
    usage("changes|clean|extras|ignore|list|ls|pull|push|rebuild|sync");
  }
  n = strlen(g.argv[2]);
  db_open_config(1);
  blob_zero(&extra);
  zCmd = g.argv[2];
  if( !login_is_nobody() ) blob_appendf(&extra, " -U %s", g.zLogin);
  if( strncmp(zCmd, "list", n)==0 || strncmp(zCmd,"ls",n)==0 ){
    zCmd = "list";
    useCheckouts = find_option("ckout","c",0)!=0;
  }else if( strncmp(zCmd, "clean", n)==0 ){
    zCmd = "clean --chdir";
    collect_argument(&extra, "allckouts",0);
    collect_argument_value(&extra, "case-sensitive");
    collect_argument_value(&extra, "clean");
    collect_argument(&extra, "dirsonly",0);
    collect_argument(&extra, "dotfiles",0);
    collect_argument(&extra, "emptydirs",0);
    collect_argument(&extra, "force","f");
    collect_argument_value(&extra, "ignore");
    collect_argument_value(&extra, "keep");
    collect_argument(&extra, "temp",0);
    collect_argument(&extra, "verbose","v");
    collect_argument(&extra, "whatif",0);
    useCheckouts = 1;
  }else if( strncmp(zCmd, "extras", n)==0 ){
    if( showFile ){
      zCmd = "extras --chdir";
    }else{
      zCmd = "extras --header --chdir";
    }
    collect_argument(&extra, "abs-paths",0);
    collect_argument_value(&extra, "case-sensitive");
    collect_argument(&extra, "dotfiles",0);
    collect_argument_value(&extra, "ignore");
    collect_argument(&extra, "rel-paths",0);
    useCheckouts = 1;
    stopOnError = 0;

    collect_argument(&extra, "noverify",0);
    collect_argument_value(&extra, "pagesize");
    collect_argument(&extra, "vacuum",0);
    collect_argument(&extra, "deanalyze",0);
    collect_argument(&extra, "analyze",0);
    collect_argument(&extra, "wal",0);
    collect_argument(&extra, "stats",0);
  }else if( strncmp(zCmd, "setting", n)==0 ){
    zCmd = "setting -R";
    collect_argv(&extra, 3);
  }else if( strncmp(zCmd, "unset", n)==0 ){
    zCmd = "unset -R";
    collect_argv(&extra, 3);
  }else if( strncmp(zCmd, "sync", n)==0 ){
    zCmd = "sync -autourl -R";
    collect_argument(&extra, "verbose","v");
  }else if( strncmp(zCmd, "test-integrity", n)==0 ){
    collect_argument(&extra, "parse", 0);
    zCmd = "test-integrity";
  }else if( strncmp(zCmd, "test-orphans", n)==0 ){

      }
      fossil_free(zSql);
    }
    db_end_transaction(0);
    return;
  }else{
    fossil_fatal("\"all\" subcommand should be one of: "
                 "changes clean extras ignore list ls push pull rebuild sync");
  }
  verify_all_options();
  zFossil = quoteFilename(g.nameOfExe);
  if( useCheckouts ){
    db_prepare(&q,
       "SELECT DISTINCT substr(name, 7), name COLLATE nocase"
       "  FROM global_config"

      db_multi_exec("INSERT INTO todel VALUES(%Q)", db_column_text(&q, 1));
      nToDel++;
      continue;
    }
    if( zCmd[0]=='l' ){
      fossil_print("%s\n", zFilename);
      continue;
    }else if( showFile ){
      fossil_print("%s: %s\n", useCheckouts ? "checkout" : "repository",
                   zFilename);
    }
    zQFilename = quoteFilename(zFilename);
    zSyscmd = mprintf("%s %s %s%s",
                      zFossil, zCmd, zQFilename, blob_str(&extra));
    if( !quiet || dryRunFlag ){
      fossil_print("%s\n", zSyscmd);
      fflush(stdout);

    if( g.perm.ApndTkt==0 || g.perm.Attach==0 ) login_needed();
    if( !db_exists("SELECT 1 FROM tag WHERE tagname='tkt-%q'", zTkt) ){
      zTkt = db_text(0, "SELECT substr(tagname,5) FROM tag" 
                        " WHERE tagname GLOB 'tkt-%q*'", zTkt);
      if( zTkt==0 ) fossil_redirect_home();
    }
    zTarget = zTkt;
    zTargetType = mprintf("Ticket <a href=\"%s/tktview/%s\">%S</a>",
                          g.zTop, zTkt, zTkt);
  }
  if( zFrom==0 ) zFrom = mprintf("%s/home", g.zTop);
  if( P("cancel") ){
    cgi_redirect(zFrom);
  }
  if( P("ok") && szContent>0 && (goodCaptcha = captcha_is_correct()) ){

    n = strlen(zComment);
    while( n>0 && fossil_isspace(zComment[n-1]) ){ n--; }
    if( n>0 ){
      blob_appendf(&manifest, "C %#F\n", n, zComment);
    }
    zDate = date_in_standard_format("now");
    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "U %F\n", login_name());
    md5sum_blob(&manifest, &cksum);
    blob_appendf(&manifest, "Z %b\n", &cksum);
    attach_put(&manifest, rid, needModerator);
    assert( blob_is_reset(&manifest) );
    db_end_transaction(0);
    cgi_redirect(zFrom);
  }

      if( zFile[i]=='/' || zFile[i]=='\\' ) n = i;
    }
    zFile += n;
    if( zFile[0]==0 ) zFile = "unknown";
    blob_appendf(&manifest, "A %F %F\n", zFile, zTarget);
    zDate = date_in_standard_format("now");
    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "U %F\n", login_name());
    md5sum_blob(&manifest, &cksum);
    blob_appendf(&manifest, "Z %b\n", &cksum);
    rid = content_put(&manifest);
    manifest_crosslink(rid, &manifest, MC_NONE);
    db_end_transaction(0);
    @ <p>The attachment below has been deleted.</p>
  }

      return;
    }
    if( strcmp(zModAction,"approve")==0 ){
      moderation_approve(rid);
    }
  }
  style_header("Attachment Details");
  style_submenu_element("Raw", "Raw", "%R/artifact/%s", zUuid);

  @ <div class="section">Overview</div>
  @ <p><table class="label-value">
  @ <tr><th>Artifact&nbsp;ID:</th>
  @ <td>%z(href("%R/artifact/%s",zUuid))%s(zUuid)</a>
  if( g.perm.Setup ){
    @ (%d(rid))

      output_text_with_line_numbers(z, zLn);
    }else{
      @ <pre>
      @ %h(z)
      @ </pre>
    }
  }else if( strncmp(zMime, "image/", 6)==0 ){
    @ <img src="%R/raw/%s(zSrc)?m=%s(zMime)"></img>
    style_submenu_element("Image", "Image", "%R/raw/%s?m=%s", zSrc, zMime);
  }else{
    int sz = db_int(0, "SELECT size FROM blob WHERE rid=%d", ridSrc);
    @ <i>(file is %d(sz) bytes of binary data)</i>
  }
  @ </blockquote>
  manifest_destroy(pAttach);
  blob_reset(&attach);

#define bag_hash(i)  (i*101)

/*
** Change the size of the hash table on a bag so that
** it contains N slots
**
** Completely reconstruct the hash table from scratch.  Deleted
** entries (indicated by a -1) are removed.  When finished, it
** should be the case that p->cnt==p->used.
*/
static void bag_resize(Bag *p, int newSize){
  int i;
  Bag old;
  int nDel = 0;   /* Number of deleted entries */
  int nLive = 0;  /* Number of live entries */

    }else{
      g.argv[1] = "update";
      g.argv[2] = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", pMid->rid);
      g.argc = 3;
      g.fNoSync = 1;
      update_cmd();
    }

    if( strncmp(zDisplay,"chart",m)==0 ){
      bisect_chart(1);
    }else if( strncmp(zDisplay, "log", m)==0 ){
      bisect_chart(0);
    }else if( strncmp(zDisplay, "status", m)==0 ){
      bisect_list(1);
    }

** Initialize a blob to a nul-terminated string.
** Any prior data in the blob is discarded.
*/
void blob_set(Blob *pBlob, const char *zStr){
  blob_init(pBlob, zStr, -1);
}

/*
** Initialize a blob to a nul-terminated string obtained from fossil_malloc().
** The blob will take responsibility for freeing the string.
*/
void blob_set_dynamic(Blob *pBlob, char *zStr){
  blob_init(pBlob, zStr, -1);
  pBlob->xRealloc = blobReallocMalloc;
}

/*
** Initialize a blob to an empty string.
*/
void blob_zero(Blob *pBlob){
  static const char zEmpty[] = "";
  assert_blob_is_reset(pBlob);
  pBlob->nUsed = 0;

#if defined(_WIN32)
    if( fossil_utf8_to_console(blob_buffer(pBlob), nWrote, 0) >= 0 ){
      return nWrote;
    }
#endif
    fwrite(blob_buffer(pBlob), 1, nWrote, stdout);
  }else{



    file_mkfolder(zFilename, 1);




























    out = fossil_fopen(zFilename, "wb");
    if( out==0 ){
      fossil_fatal_recursive("unable to open file \"%s\" for writing",
                             zFilename);
      return 0;
    }

    blob_is_init(pBlob);
    nWrote = fwrite(blob_buffer(pBlob), 1, blob_size(pBlob), out);
    fclose(out);
    if( nWrote!=blob_size(pBlob) ){
      fossil_fatal_recursive("short write: %d of %d bytes to %s", nWrote,
         blob_size(pBlob), zFilename);
    }

** is either no BOM at all or an (le/be) UTF-16 BOM, a conversion to UTF-8 is
** done.  If useMbcs is false and there is no BOM, the input string is assumed
** to be UTF-8 already, so no conversion is done.
*/
void blob_to_utf8_no_bom(Blob *pBlob, int useMbcs){
  char *zUtf8;
  int bomSize = 0;

  int bomReverse = 0;

  if( starts_with_utf8_bom(pBlob, &bomSize) ){
    struct Blob temp;
    zUtf8 = blob_str(pBlob) + bomSize;
    blob_zero(&temp);
    blob_append(&temp, zUtf8, -1);
    blob_swap(pBlob, &temp);
    blob_reset(&temp);

  }else if( starts_with_utf16_bom(pBlob, &bomSize, &bomReverse) ){
    zUtf8 = blob_buffer(pBlob);
    if( bomReverse ){
      /* Found BOM, but with reversed bytes */
      unsigned int i = blob_size(pBlob);
      while( i>0 ){
        /* swap bytes of unicode representation */
        char zTemp = zUtf8[--i];
        zUtf8[i] = zUtf8[i-1];
        zUtf8[--i] = zTemp;
      }
    }
    /* Make sure the blob contains two terminating 0-bytes */
    blob_append(pBlob, "", 1);
    zUtf8 = blob_str(pBlob) + bomSize;
    zUtf8 = fossil_unicode_to_utf8(zUtf8);

    blob_set_dynamic(pBlob, zUtf8);


#if defined(_WIN32)
  }else if( useMbcs ){
    zUtf8 = fossil_mbcs_to_utf8(blob_str(pBlob));
    blob_reset(pBlob);
    blob_append(pBlob, zUtf8, -1);
    fossil_mbcs_free(zUtf8);
#endif /* _WIN32 */
  }
}

      rootid);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTag = db_column_text(&q, 0);
    blob_appendf(&branch, "T -%F *\n", zTag);
  }
  db_finalize(&q);

  blob_appendf(&branch, "U %F\n", zUserOvrd ? zUserOvrd : login_name());
  md5sum_blob(&branch, &mcksum);
  blob_appendf(&branch, "Z %b\n", &mcksum);
  if( !noSign && clearsign(&branch, &branch) ){
    Blob ans;
    char cReply;

    prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
    cReply = blob_str(&ans)[0];
    if( cReply!='y' && cReply!='Y'){
      db_end_transaction(1);
      fossil_exit(1);
    }
  }

      @ <li>%z(href("%R/timeline?r=%T",zBr))%h(zBr)</a></li>
    }
  }
  if( cnt ){
    @ </ul>
  }
  db_finalize(&q);






  style_footer();
}

/*
** This routine is called while for each check-in that is rendered by
** the timeline of a "brlist" page.  Add some additional hyperlinks
** to the end of the line.

    "%s AND blob.rid IN (SELECT rid FROM tagxref"
    "                     WHERE tagtype>0 AND tagid=%d AND srcid!=0)"
    " ORDER BY event.mtime DESC",
    timeline_query_for_www(), TAG_BRANCH
  );
  www_print_timeline(&q, 0, 0, 0, brtimeline_extra);
  db_finalize(&q);






  style_footer();
}

  int i, j;
  char *zSep = "";

  for(i=0; zPath[i]; i=j){
    for(j=i; zPath[j] && zPath[j]!='/'; j++){}
    if( zPath[j] && g.perm.Hyperlink ){
      if( zCI ){
        char *zLink = href("%R/%s?name=%#T%s&ci=%s", zURI, j, zPath, zREx, zCI);
        blob_appendf(pOut, "%s%z%#h</a>",
                     zSep, zLink, j-i, &zPath[i]);
      }else{
        char *zLink = href("%R/%s?name=%#T%s", zURI, j, zPath, zREx);
        blob_appendf(pOut, "%s%z%#h</a>",
                     zSep, zLink, j-i, &zPath[i]);
      }

                          url_render(&sURI, "ci", "trunk", 0, 0));
  }
  if( linkTip ){
    style_submenu_element("Tip", "Tip", "%s",
                          url_render(&sURI, "ci", "tip", 0, 0));
  }
  if( zCI ){



    @ <h2>Files of check-in [%z(href("vinfo?name=%s",zUuid))%.10s(zUuid)</a>]
    @ %s(blob_str(&dirname))</h2>
    zSubdirLink = mprintf("%R/dir?ci=%s&name=%T", zUuid, zPrefix);
    if( nD==0 ){
      style_submenu_element("File Ages", "File Ages", "%R/fileage?name=%s",
                            zUuid);
    }
  }else{
    @ <h2>The union of all files from all check-ins
    @ %s(blob_str(&dirname))</h2>
    zSubdirLink = mprintf("%R/dir?name=%T", zPrefix);
  }

  char *zREx = "";         /* Extra parameters for path hyperlinks */
  ReCompiled *pRE = 0;     /* Compiled regular expression */
  FileTreeNode *p;         /* One line of the tree */
  FileTree sTree;          /* The complete tree of files */
  HQuery sURI;             /* Hyperlink */
  int startExpanded;       /* True to start out with the tree expanded */
  int showDirOnly;         /* Show directories only.  Omit files */
  int nDir = 0;            /* Number of directories. Used for ID attributes */
  char *zProjectName = db_get("project-name", 0);

  if( strcmp(PD("type",""),"flat")==0 ){ page_dir(); return; }
  memset(&sTree, 0, sizeof(sTree));
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(); return; }
  while( nD>1 && zD[nD-2]=='/' ){ zD[(--nD)-1] = 0; }

      blob_appendf(&dirname, "matching \"%s\"", zRE);
    }
  }
  if( zCI ){
    style_submenu_element("All", "All", "%s",
                          url_render(&sURI, "ci", 0, 0, 0));
    if( nD==0 && !showDirOnly ){
      style_submenu_element("File Ages", "File Ages", "%R/fileage?name=%s",
                            zUuid);
    }
  }
  if( linkTrunk ){
    style_submenu_element("Trunk", "Trunk", "%s",
                          url_render(&sURI, "ci", "trunk", 0, 0));
  }

    Stmt ins, q;
    ManifestFile *pFile;

    db_multi_exec(
        "CREATE TEMP TABLE filelist("
        "   x TEXT PRIMARY KEY COLLATE nocase,"
        "   uuid TEXT"


        ") WITHOUT ROWID;"
    );
    db_prepare(&ins, "INSERT OR IGNORE INTO filelist VALUES(:f,:u)");
    manifest_file_rewind(pM);
    while( (pFile = manifest_file_next(pM,0))!=0 ){
      if( nD>0
       && (fossil_strncmp(pFile->zName, zD, nD-1)!=0
           || pFile->zName[nD-1]!='/')

  }

  if( zCI ){
    @ <h2>%d(nFile) %s(zObjType) of check-in
    if( sqlite3_strnicmp(zCI, zUuid, (int)strlen(zCI))!=0 ){
      @ "%h(zCI)"
    }
    @ [%z(href("vinfo?name=%s",zUuid))%S(zUuid)</a>] %s(blob_str(&dirname))</h2>
  }else{
    int n = db_int(0, "SELECT count(*) FROM plink");
    @ <h2>%d(nFile) %s(zObjType) from all %d(n) check-ins
    @ %s(blob_str(&dirname))</h2>
  }


  /* Generate tree of lists.
  **
  ** Each file and directory is a list element: <li>.  Files have class=file
  ** and if the filename as the suffix "xyz" the file also has class=file-xyz.
  ** Directories have class=dir.  The directory specfied by the name= query
  ** parameter (or the top-level directory if there is no name= query parameter)
  ** adds class=subdir.
  **
  ** The <li> element for directories also contains a sublist <ul>
  ** for the contents of that directory.
  */
  @ <div class="filetree"><ul>
  if( nD ){
    @ <li class="dir last">
  }else{
    @ <li class="dir subdir last">
  }
  @ %z(href("%s",url_render(&sURI,"name",0,0,0)))%h(zProjectName)</a>
  @ <ul>
  for(p=sTree.pFirst, nDir=0; p; p=p->pNext){
    const char *zLastClass = p->isLast ? " last" : "";
    if( p->isDir ){
      const char *zSubdirClass = p->nFullName==nD-1 ? " subdir" : "";


      @ <li class="dir%s(zSubdirClass)%s(zLastClass)">

      @ %z(href("%s",url_render(&sURI,"name",p->zFullName,0,0)))%h(p->zName)</a>
      if( startExpanded || p->nFullName<=nD ){
        @ <ul id="dir%d(nDir)">
      }else{
        @ <ul id="dir%d(nDir)" class="collapsed">
      }
      nDir++;
    }else if( !showDirOnly ){
      const char *zFileClass = fileext_class(p->zName);
      char *zLink;
      if( zCI ){
        zLink = href("%R/artifact/%s",p->zUuid);
      }else{
        zLink = href("%R/finfo?name=%T",p->zFullName);
      }
      @ <li class="%z(zFileClass)%s(zLastClass)">%z(zLink)%h(p->zName)</a>
    }
    if( p->isLast ){
      int nClose = p->iLevel - (p->pNext ? p->pNext->iLevel : 0);
      while( nClose-- > 0 ){
        @ </ul>
      }
    }
  }
  @ </ul>
  @ </ul></div>
  @ <script>(function(){
  @ function isExpanded(ul){
  @   return ul.className=='';
  @ }
  @
  @ function toggleDir(ul, useInitValue){
  @   if( !useInitValue ){
  @     expandMap[ul.id] = !isExpanded(ul);
  @     history.replaceState(expandMap, '');
  @   }
  @   ul.className = expandMap[ul.id] ? '' : 'collapsed';
  @ }
  @
  @ function toggleAll(tree, useInitValue){
  @   var lists = tree.querySelectorAll('.subdir > ul > li ul');
  @   if( !useInitValue ){
  @     var expand = true;  /* Default action: make all sublists visible */
  @     for( var i=0; lists[i]; i++ ){
  @       if( isExpanded(lists[i]) ){
  @         expand = false; /* Any already visible - make them all hidden */
  @         break;
  @       }
  @     }
  @     expandMap = {'*': expand};
  @     history.replaceState(expandMap, '');
  @   }
  @   var className = expandMap['*'] ? '' : 'collapsed';
  @   for( var i=0; lists[i]; i++ ){
  @     lists[i].className = className;
  @   }
  @ }
  @
  @ function checkState(){
  @   expandMap = history.state || {};
  @   if( '*' in expandMap ) toggleAll(outer_ul, true);
  @   for( var id in expandMap ){
  @     if( id!=='*' ) toggleDir(gebi(id), true);
  @   }
  @ }
  @
  @ function belowSubdir(node){
  @   do{
  @     node = node.parentNode;
  @     if( node==subdir ) return true;
  @   } while( node && node!=outer_ul );
  @   return false;
  @ }
  @
  @ var history = window.history || {};
  @ if( !history.replaceState ) history.replaceState = function(){};
  @ var outer_ul = document.querySelector('.filetree > ul');
  @ var subdir = outer_ul.querySelector('.subdir');
  @ var expandMap = {};
  @ checkState();
  @ outer_ul.onclick = function(e){
  @   e = e || window.event;
  @   var a = e.target || e.srcElement;
  @   if( a.nodeName!='A' ) return true;
  @   if( a.parentNode==subdir ){
  @     toggleAll(outer_ul);
  @     return false;
  @   }
  @   if( !belowSubdir(a) ) return true;
  @   var ul = a.nextSibling;
  @   while( ul && ul.nodeName!='UL' ) ul = ul.nextSibling;
  @   if( !ul ) return true; /* This is a file link, not a directory */
  @   toggleDir(ul);
  @   return false;
  @ }
  @ }())</script>
  style_footer();

  /* We could free memory used by sTree here if we needed to.  But
  ** the process is about to exit, so doing so would not really accomplish

  return zClass;
}

/*
** Look at all file containing in the version "vid".  Construct a
** temporary table named "fileage" that contains the file-id for each
** files, the pathname, the check-in where the file was added, and the
** mtime on that checkin. If zGlob and *zGlob then only files matching
** the given glob are computed.
*/
int compute_fileage(int vid, char const * zGlob){
  Manifest *pManifest;
  ManifestFile *pFile;
  int nFile = 0;
  double vmtime;
  Stmt ins;
  Stmt q1, q2, q3;
  Stmt upd;
  if(zGlob && !*zGlob) zGlob = NULL;
  db_multi_exec(
    /*"DROP TABLE IF EXISTS temp.fileage;"*/
    "CREATE TEMP TABLE fileage("
    "  fid INTEGER,"
    "  mid INTEGER,"
    "  mtime DATETIME,"
    "  pathname TEXT"
    ");"
    "CREATE INDEX fileage_fid ON fileage(fid);"
  );
  pManifest = manifest_get(vid, CFTYPE_MANIFEST, 0);
  if( pManifest==0 ) return 1;
  manifest_file_rewind(pManifest);
  db_prepare(&ins,
     "INSERT INTO temp.fileage(fid, pathname)"
     "  SELECT rid, :path FROM blob WHERE uuid=:uuid"
  );
  while( (pFile = manifest_file_next(pManifest, 0))!=0 ){
    if(zGlob && !strglob(zGlob, pFile->zName)) continue;
    db_bind_text(&ins, ":uuid", pFile->zUuid);
    db_bind_text(&ins, ":path", pFile->zName);
    db_step(&ins);
    db_reset(&ins);
    nFile++;
  }
  db_finalize(&ins);

  return 0;
}

/*
** WEBPAGE:  fileage
**
** Parameters:
**   name=VERSION   Selects the checkin version (default=tip).
**   glob=STRING    Only shows files matching this glob pattern
**                  (e.g. *.c or *.txt).
*/
void fileage_page(void){
  int rid;
  const char *zName;
  char *zBaseTime;
  char const * zGlob;
  Stmt q;
  double baseTime;
  int lastMid = -1;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(); return; }
  zName = P("name");
  if( zName==0 ) zName = "tip";
  rid = symbolic_name_to_rid(zName, "ci");
  if( rid==0 ){
    fossil_fatal("not a valid check-in: %s", zName);
  }
  style_submenu_element("Tree-View", "Tree-View", "%R/tree?ci=%T", zName);
  style_header("File Ages", zName);
  zGlob = P("glob");
  compute_fileage(rid,zGlob);
  baseTime = db_double(0.0, "SELECT mtime FROM event WHERE objid=%d", rid);
  zBaseTime = db_text("","SELECT datetime(%.20g%s)", baseTime, timeline_utc());
  @ <h2>File Ages For Check-in
  @ %z(href("%R/info?name=%T",zName))%h(zName)</a></h2>
  @
  @ <p>The times given are relative to
  @ %z(href("%R/timeline?c=%T",zBaseTime))%s(zBaseTime)</a>, which is the

      }
    }else{
      zAge[0] = 0;
    }
    @ <tr>
    @ <td>%s(zAge)
    @ <td width="25">
    @ <td>%z(href("%R/artifact/%s?ln", zFUuid))%h(db_column_text(&q, 3))</a>
    @ </tr>
    @
  }
  @ <tr><td colspan=3><hr></tr>
  @ </table>
  db_finalize(&q);
  style_footer();
}

      }
      z[k++] = ' ';
      z[k++] = ' ';
    }
    z[k++] = '\n';
  }
  z[k] = 0;
  return z;
}
#endif /* CAPTCHA==1 */


#if CAPTCHA==2
static const char *const azFont2[] = {
 /* 0 */

 /* 7 */
 " ____ ",
 "|__  |",
 "  / / ",
 " /_/  ",

 /* 8 */
 " ___ ",
 "( _ )",
 "/ _ \\",
 "\\___/",

 /* 9 */
 " ___ ",
 "/ _ \\",

      for(m=0; zChar[m]; m++){
        z[k++] = zChar[m];
      }
    }
    z[k++] = '\n';
  }
  z[k] = 0;
  return z;
}
#endif /* CAPTCHA==2 */

#if CAPTCHA==3
static const char *const azFont3[] = {
  /* 0 */
  "  ___  ",
  " / _ \\ ",
  "| | | |",
  "| | | |",
  "| |_| |",
  " \\___/ ",

  /* 1 */
  " __ ",
  "/_ |",
  " | |",
  " | |",
  " | |",
  " |_|",

  /* 2 */
  " ___  ",
  "|__ \\ ",
  "   ) |",
  "  / / ",
  " / /_ ",
  "|____|",

  /* 3 */
  " ____  ",
  "|___ \\ ",
  "  __) |",
  " |__ < ",
  " ___) |",
  "|____/ ",

  /* 4 */
  " _  _   ",
  "| || |  ",
  "| || |_ ",
  "|__   _|",
  "   | |  ",
  "   |_|  ",

  /* 5 */
  " _____ ",
  "| ____|",
  "| |__  ",
  "|___ \\ ",
  " ___) |",
  "|____/ ",

  /* 6 */
  "   __  ",
  "  / /  ",
  " / /_  ",
  "| '_ \\ ",
  "| (_) |",
  " \\___/ ",

  /* 7 */
  " ______ ",
  "|____  |",
  "    / / ",
  "   / /  ",
  "  / /   ",
  " /_/    ",

  /* 8 */
  "  ___  ",
  " / _ \\ ",
  "| (_) |",
  " > _ < ",
  "| (_) |",
  " \\___/ ",

  /* 9 */
  "  ___  ",
  " / _ \\ ",
  "| (_) |",
  " \\__, |",
  "   / / ",
  "  /_/  ",

  /* A */
  "          ",
  "    /\\    ",
  "   /  \\   ",
  "  / /\\ \\  ",
  " / ____ \\ ",
  "/_/    \\_\\",

  /* B */
  " ____  ",
  "|  _ \\ ",
  "| |_) |",
  "|  _ < ",
  "| |_) |",
  "|____/ ",

  /* C */
  "  _____ ",
  " / ____|",
  "| |     ",
  "| |     ",
  "| |____ ",
  " \\_____|",

  /* D */
  " _____  ",
  "|  __ \\ ",
  "| |  | |",
  "| |  | |",
  "| |__| |",
  "|_____/ ",

  /* E */
  " ______ ",
  "|  ____|",
  "| |__   ",
  "|  __|  ",
  "| |____ ",
  "|______|",

  /* F */
  " ______ ",
  "|  ____|",
  "| |__   ",
  "|  __|  ",
  "| |     ",
  "|_|     ",

      for(m=0; zChar[m]; m++){
        z[k++] = zChar[m];
      }
    }
    z[k++] = '\n';
  }
  z[k] = 0;
  return z;
}
#endif /* CAPTCHA==3 */

/*
** COMMAND: test-captcha
*/
void test_captcha(void){

/*
** Return true if a CAPTCHA is required for editing wiki or tickets or for
** adding attachments.
**
** A CAPTCHA is required in those cases if the user is not logged in (if they
** are user "nobody") and if the "require-captcha" setting is true.  The
** "require-captcha" setting is controlled on the Admin/Access page.  It
** defaults to true.
*/
int captcha_needed(void){

  return login_is_nobody() && db_get_boolean("require-captcha", 1);
}

/*
** If a captcha is required but the correct captcha code is not supplied
** in the query parameters, then return false (0).
**
** If no captcha is required or if the correct captcha is supplied, return

      for( zTok = strtok_r(zBuf, ",\"",&zPos);
           zTok && fossil_stricmp(zTok,zETag);
           zTok =  strtok_r(0, ",\"",&zPos)){}
      fossil_free(zBuf);
      if(zTok) return 1;
    }
  }

  return 0;
}
#endif

/*
** Return true if the response should be sent with Content-Encoding: gzip.
*/

/*
** Add a query parameter.  The zName portion is fixed but a copy
** must be made of zValue.
*/
void cgi_setenv(const char *zName, const char *zValue){
  cgi_set_parameter_nocopy(zName, mprintf("%s",zValue), 0);
}


/*
** Add a list of query parameters or cookies to the parameter set.
**
** Each parameter is of the form NAME=VALUE.  Both the NAME and the
** VALUE may be url-encoded ("+" for space, "%HH" for other special
** characters).  But this routine assumes that NAME contains no

      *pnContent = i;
      i += nBoundry;
      break;
    }
  }
  *pz = &z[i];
  get_line_from_string(pz, pLen);
  return z;
}

/*
** Tokenize a line of text into as many as nArg tokens.  Make
** azArg[] point to the start of each token.
**
** Tokens consist of space or semi-colon delimited words or

          char *z = azArg[++i];
          if( zName && z && fossil_islower(zName[0]) ){
            cgi_set_parameter_nocopy(mprintf("%s:mimetype",zName), z, 1);
          }
        }
      }
    }
  }
}


#ifdef FOSSIL_ENABLE_JSON
/*
** Internal helper for cson_data_source_FILE_n().
*/

  }

  z = (char*)P("HTTP_COOKIE");
  if( z ){
    z = mprintf("%s",z);
    add_param_list(z, ';');
  }

  z = (char*)P("QUERY_STRING");
  if( z ){
    z = mprintf("%s",z);
    add_param_list(z, '&');
  }

  z = (char*)P("REMOTE_ADDR");
  if( z ){
    g.zIpAddr = mprintf("%s", z);
  }

  len = atoi(PD("CONTENT_LENGTH", "0"));
  g.zContentType = zType = P("CONTENT_TYPE");
  blob_zero(&g.cgiIn);
  if( len>0 && zType ){
    if( fossil_strcmp(zType,"application/x-www-form-urlencoded")==0
         || strncmp(zType,"multipart/form-data",19)==0 ){
      z = fossil_malloc( len+1 );
      len = fread(z, 1, len, g.httpIn);
      z[len] = 0;
      cgi_trace(z);
      if( zType[0]=='a' ){
        add_param_list(z, '&');

      g.json.isJsonMode = 1;
      cgi_parse_POST_JSON(g.httpIn, (unsigned int)len);
      /* FIXMEs:

      - See if fossil really needs g.cgiIn to be set for this purpose
      (i don't think it does). If it does then fill g.cgiIn and
      refactor to parse the JSON from there.

      - After parsing POST JSON, copy the "first layer" of keys/values
      to cgi_setenv(), honoring the upper-case distinction used
      in add_param_list(). However...

      - If we do that then we might get a disconnect in precedence of
      GET/POST arguments. i prefer for GET entries to take precedence
      over like-named POST entries, but in order for that to happen we

** Return a pointer to a string containing the real IP address, or a
** NULL pointer to stick with the IP address previously computed and
** loaded into g.zIpAddr.
*/
static const char *cgi_accept_forwarded_for(const char *z){
  int i;
  if( fossil_strcmp(g.zIpAddr, "127.0.0.1")!=0 ) return 0;

  i = strlen(z)-1;
  while( i>=0 && z[i]!=',' && !fossil_isspace(z[i]) ) i--;
  return &z[++i];
}

/*
** Remove the first space-delimited token from a string and return

  cgi_setenv("REQUEST_URI", zToken);
  cgi_setenv("SCRIPT_NAME", "");
  for(i=0; zToken[i] && zToken[i]!='?'; i++){}
  if( zToken[i] ) zToken[i++] = 0;
  cgi_setenv("PATH_INFO", zToken);
  cgi_setenv("QUERY_STRING", &zToken[i]);
  if( zIpAddr==0 &&
        getpeername(fileno(g.httpIn), (struct sockaddr*)&remoteName,
                                &size)>=0
  ){
    zIpAddr = inet_ntoa(remoteName.sin_addr);
  }
  if( zIpAddr ){
    cgi_setenv("REMOTE_ADDR", zIpAddr);
    g.zIpAddr = mprintf("%s", zIpAddr);
  }

  /* Get all the optional fields that follow the first line.
  */
  while( fgets(zLine,sizeof(zLine),g.httpIn) ){
    char *zFieldName;
    char *zVal;

    cgi_trace(zLine);

  static char *zCmd = 0;
  char *z, *zToken;
  const char *zType = 0;
  int i, content_length = 0;
  char zLine[2000];     /* A single line of input. */

  if( zIpAddr ){
    if( nCycles==0 ){
      cgi_setenv("REMOTE_ADDR", zIpAddr);
      g.zIpAddr = mprintf("%s", zIpAddr);
    }
  }else{
    fossil_panic("missing SSH IP address");
  }
  if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){

  for(i=0; zToken[i] && zToken[i]!='?'; i++){}
  if( zToken[i] ) zToken[i++] = 0;
  if( nCycles==0 ){
    cgi_setenv("PATH_INFO", zToken);
  }else{
    cgi_replace_parameter("PATH_INFO", mprintf("%s",zToken));
  }

  /* Get all the optional fields that follow the first line.
  */
  while( fgets(zLine,sizeof(zLine),g.httpIn) ){
    char *zFieldName;
    char *zVal;

    cgi_trace(zLine);

  fossil_free(zToFree);
  fgetc(g.httpIn);  /* Read past the "," separating header from content */
  cgi_init();
}


#if INTERFACE
/*
** Bitmap values for the flags parameter to cgi_http_server().
*/
#define HTTP_SERVER_LOCALHOST      0x0001     /* Bind to 127.0.0.1 only */
#define HTTP_SERVER_SCGI           0x0002     /* SCGI instead of HTTP */

#endif /* INTERFACE */

    }else{
      fossil_fatal("unable to open listening socket on any"
                   " port in the range %d..%d", mnPort, mxPort);
    }
  }
  if( iPort>mxPort ) return 1;
  listen(listener,10);

  fossil_print("Listening for %s requests on TCP port %d\n",
     (flags & HTTP_SERVER_SCGI)!=0?"SCGI":"HTTP",  iPort);
  fflush(stdout);

  if( zBrowser ){
    zBrowser = mprintf(zBrowser, iPort);
#if defined(__CYGWIN__)
    /* On Cygwin, we can do better than "echo" */
    if( memcmp(zBrowser, "echo ", 5)==0 ){
      wchar_t *wUrl = fossil_utf8_to_unicode(zBrowser+5);
      wUrl[wcslen(wUrl)-2] = 0; /* Strip terminating " &" */

      }
    }
    /* Bury dead children */
    while( waitpid(0, 0, WNOHANG)>0 ){
      nchildren--;
    }
  }
  /* NOT REACHED */
  fossil_exit(1);
#endif
  /* NOT REACHED */
  return 0;
}

  }else if( p->tm_mon>11 ){
    p->tm_year += p->tm_mon/12;
    p->tm_mon %= 12;
  }
  isLeapYr = p->tm_year%4==0 && (p->tm_year%100!=0 || (p->tm_year+300)%400==0);
  p->tm_yday = priorDays[p->tm_mon] + p->tm_mday - 1;
  if( isLeapYr && p->tm_mon>1 ) p->tm_yday++;
  nDay = (p->tm_year-70)*365 + (p->tm_year-69)/4 -p->tm_year/100 +
         (p->tm_year+300)/400 + p->tm_yday;
  t = ((nDay*24 + p->tm_hour)*60 + p->tm_min)*60 + p->tm_sec;
  return t;
}

/*
** Check the objectTime against the If-Modified-Since request header. If the

**    --rel-paths       Display pathnames relative to the current working
**                      directory.
**    --sha1sum         Verify file status using SHA1 hashing rather
**                      than relying on file mtimes.
**    --header          Identify the repository if there are changes
**    -v|--verbose      Say "(none)" if there are no changes
**
** See also: extras, ls, status
*/
void changes_cmd(void){
  Blob report;
  int vid;
  int useSha1sum = find_option("sha1sum", 0, 0)!=0;
  int showHdr = find_option("header",0,0)!=0;
  int verboseFlag = find_option("verbose","v",0)!=0;

**
**    --abs-paths       Display absolute pathnames.
**    --rel-paths       Display pathnames relative to the current working
**                      directory.
**    --sha1sum         Verify file status using SHA1 hashing rather
**                      than relying on file mtimes.
**
** See also: changes, extras, ls
*/
void status_cmd(void){
  int vid;
  db_must_be_within_tree();
       /* 012345678901234 */
  fossil_print("repository:   %s\n", db_repository_filename());
  fossil_print("local-root:   %s\n", g.zLocalRoot);

** extra information about each file.  If FILENAMES are included, only
** the files listed (or their children if they are directories) are shown.
**
** Options:
**   --age           Show when each file was committed
**   -v|--verbose    Provide extra information about each file.
**
** See also: changes, extras, status
*/
void ls_cmd(void){
  int vid;
  Stmt q;
  int verboseFlag;
  int showAge;
  char *zOrderBy = "pathname";

** Pathnames are displayed according to the "relative-paths" setting,
** unless overridden by the --abs-paths or --rel-paths options.
**
** Options:
**    --abs-paths      Display absolute pathnames.
**    --case-sensitive <BOOL> override case-sensitive setting
**    --dotfiles       include files beginning with a dot (".")
**    --header         Identify the repository if there are extras
**    --ignore <CSG>   ignore files matching patterns from the argument
**    --rel-paths      Display pathnames relative to the current working
**                     directory.
**
** See also: changes, clean, status
*/
void extras_cmd(void){
  Stmt q;
  const char *zIgnoreFlag = find_option("ignore",0,1);
  unsigned scanFlags = find_option("dotfiles",0,0)!=0 ? SCAN_ALL : 0;
  int showHdr = find_option("header",0,0)!=0;
  int cwdRelative = 0;
  Glob *pIgnore;
  Blob rewrittenPathname;
  const char *zPathname, *zDisplayName;

  if( find_option("temp",0,0)!=0 ) scanFlags |= SCAN_TEMP;
  capture_case_sensitive_option();

      file_relative_name(zFullName, &rewrittenPathname, 0);
      free(zFullName);
      zDisplayName = blob_str(&rewrittenPathname);
      if( zDisplayName[0]=='.' && zDisplayName[1]=='/' ){
        zDisplayName += 2;  /* no unnecessary ./ prefix */
      }
    }
    if( showHdr ){
      showHdr = 0;
      fossil_print("Extras for %s at %s:\n", db_get("project-name","???"),
                   g.zLocalRoot);
    }
    fossil_print("%s\n", zDisplayName);
  }
  blob_reset(&rewrittenPathname);
  db_finalize(&q);
}

/*

**                     comma separated list of glob patterns.
**    --keep <CSG>     Keep files matching this comma separated
**                     list of glob patterns.
**    -n|--dry-run     If given, display instead of run actions.
**    --temp           Remove only Fossil-generated temporary files.
**    -v|--verbose     Show all files as they are removed.
**
** See also: addremove, extras, status
*/
void clean_cmd(void){
  int allFileFlag, allDirFlag, dryRunFlag, verboseFlag;
  int emptyDirsFlag, dirsOnlyFlag;
  unsigned scanFlags = 0;
  const char *zIgnoreFlag, *zKeepFlag, *zCleanFlag;
  Glob *pIgnore, *pKeep, *pClean;

    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q, 0);
      if( !allFileFlag && !dryRunFlag && !glob_match(pClean, zName+nRoot) ){
        Blob ans;
        char cReply;
        char *prompt = mprintf("Remove unmanaged file \"%s\" (a=all/y/N)? ",
                               zName+nRoot);

        prompt_user(prompt, &ans);
        cReply = blob_str(&ans)[0];
        if( cReply=='a' || cReply=='A' ){
          allFileFlag = 1;
        }else if( cReply!='y' && cReply!='Y' ){
          blob_reset(&ans);
          continue;

    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q, 0);
      if( !allDirFlag && !dryRunFlag && !glob_match(pClean, zName+nRoot) ){
        Blob ans;
        char cReply;
        char *prompt = mprintf("Remove empty directory \"%s\" (a=all/y/N)? ",
                               zName+nRoot);

        prompt_user(prompt, &ans);
        cReply = blob_str(&ans)[0];
        if( cReply=='a' || cReply=='A' ){
          allDirFlag = 1;
        }else if( cReply!='y' && cReply!='Y' ){
          blob_reset(&ans);
          continue;

  blob_init(&prompt, zInit, -1);
#endif
  blob_append(&prompt,
    "\n"
    "# Enter commit message for this check-in. Lines beginning with # are ignored.\n"
    "#\n", -1
  );
  blob_appendf(&prompt, "# user: %s\n", p->zUserOvrd ? p->zUserOvrd : login_name());
  if( p->zBranch && p->zBranch[0] ){
    blob_appendf(&prompt, "# tags: %s\n#\n", p->zBranch);
  }else{
    char *zTags = info_tags_of_checkin(parent_rid, 1);
    if( zTags )  blob_appendf(&prompt, "# tags: %z\n#\n", zTags);
  }
  status_report(&prompt, "# ", 1, 0);

  Blob *pComment;             /* Check-in comment text */
  const char *zMimetype;      /* Mimetype of check-in command.  May be NULL */
  int verifyDate;             /* Verify that child is younger */
  int closeFlag;              /* Close the branch being committed */
  int integrateFlag;          /* Close merged-in branches */
  Blob *pCksum;               /* Repository checksum.  May be 0 */
  const char *zDateOvrd;      /* Date override.  If 0 then use 'now' */
  const char *zUserOvrd;      /* User override.  If 0 then use login_name() */
  const char *zBranch;        /* Branch name.  May be 0 */
  const char *zColor;         /* One-time background color.  May be 0 */
  const char *zBrClr;         /* Persistent branch color.  May be 0 */
  const char **azTag;         /* Tags to apply to this check-in */
};
#endif /* INTERFACE */

        vid, p->zBranch);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zBrTag = db_column_text(&q, 0);
      blob_appendf(pOut, "T -%F *\n", zBrTag);
    }
    db_finalize(&q);
  }
  blob_appendf(pOut, "U %F\n", p->zUserOvrd ? p->zUserOvrd : login_name());
  md5sum_blob(pOut, &mcksum);
  blob_appendf(pOut, "Z %b\n", &mcksum);
  if( pnFBcard ) *pnFBcard = nFBcard;
}

/*
** Issue a warning and give the user an opportunity to abandon out

      }
      zDisable = "\"crnl-glob\" setting";
    }else{
      if( encodingOk ){
        return 0; /* We don't want encoding warnings for this file. */
      }
      zWarning = "Unicode";



      zDisable = "\"encoding-glob\" setting";
    }
    file_relative_name(zFilename, &fname, 0);

    zMsg = mprintf(
         "%s contains %s. Use --no-warnings or the %s to disable this warning.\n"
         "Commit anyhow (a=all/%sy/N)? ",
         blob_str(&fname), zWarning, zDisable, zConvert);
    prompt_user(zMsg, &ans);
    fossil_free(zMsg);
    cReply = blob_str(&ans)[0];
    if( cReply=='a' || cReply=='A' ){
      allOk = 1;
    }else if( *zConvert && (cReply=='c' || cReply=='C') ){
      char *zOrig = file_newname(zFilename, "original", 1);
      FILE *f;
      blob_write_to_file(p, zOrig);
      fossil_free(zOrig);
      f = fossil_fopen(zFilename, "wb");
      if( f==0 ){
        fossil_warning("cannot open %s for writing", zFilename);
      }else{
        if( fUnicode ) {
          int bomSize;
          const unsigned char *bom = get_utf8_bom(&bomSize);
          fwrite(bom, 1, bomSize, f);
          blob_to_utf8_no_bom(p, 0);
        }
        if( fHasAnyCr ){
          blob_to_lf_only(p);
        }
        fwrite(blob_buffer(p), 1, blob_size(p), f);
        fclose(f);
      }
      return 1;
    }else if( cReply!='y' && cReply!='Y' ){
      fossil_fatal("Abandoning commit due to %s in %s",
                   zWarning, blob_str(&fname));
    }
    blob_reset(&ans);
    blob_reset(&fname);

**    --no-warnings              omit all warnings about file contents
**    --nosign                   do not attempt to sign this commit with gpg
**    --private                  do not sync changes and their descendants
**    --sha1sum                  verify file status using SHA1 hashing rather
**                               than relying on file mtimes
**    --tag TAG-NAME             assign given tag TAG-NAME to the checkin
**
** See also: branch, changes, checkout, extras, sync
*/
void commit_cmd(void){
  int hasChanges;        /* True if unsaved changes exist */
  int vid;               /* blob-id of parent version */
  int nrid;              /* blob-id of a modified file */
  int nvid;              /* Blob-id of the new check-in */
  Blob comment;          /* Check-in comment */

  */
  if( !forceDelta && !db_get_boolean("seen-delta-manifest",0) ){
    forceBaseline = 1;
  }

  /* Get the ID of the parent manifest artifact */
  vid = db_lget_int("checkout", 0);
  if( vid==0 ){
    useCksum = 1;
  }else if( content_is_private(vid) ){
    g.markPrivate = 1;
  }

  /*
  ** Autosync if autosync is enabled and this is not a private check-in.
  */
  if( !g.markPrivate ){
    if( autosync(SYNC_PULL) ){

      prompt_user("continue in spite of sync failure (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
      if( cReply!='y' && cReply!='Y' ){
        fossil_exit(1);
      }
    }
  }

  /* Require confirmation to continue with the check-in if there is
  ** clock skew
  */
  if( g.clockSkewSeen ){

    prompt_user("continue in spite of time skew (y/N)? ", &ans);
    cReply = blob_str(&ans)[0];
    if( cReply!='y' && cReply!='Y' ){
      fossil_exit(1);
    }
  }

  /* There are two ways this command may be executed. If there are
  ** no arguments following the word "commit", then all modified files
  ** in the checked out directory are committed. If one or more arguments
  ** follows "commit", then only those files are committed.
  **
  ** After the following function call has returned, the Global.aCommitFile[]
  ** array is allocated to contain the "id" field from the vfile table
  ** for each file to be committed. Or, if aCommitFile is NULL, all files
  ** should be committed.
  */
  if( select_commit_files() ){

    prompt_user("continue (y/N)? ", &ans);
    cReply = blob_str(&ans)[0];
    if( cReply!='y' && cReply!='Y' ) fossil_exit(1);
  }
  isAMerge = db_exists("SELECT 1 FROM vmerge WHERE id=0 OR id<-2");
  if( g.aCommitFile && isAMerge ){
    fossil_fatal("cannot do a partial commit of a merge");
  }

  /* Doing "fossil mv fileA fileB; fossil add fileA; fossil commit fileA"

    blob_to_utf8_no_bom(&comment, 1);
  }else if(dryRunFlag){
    blob_zero(&comment);
  }else{
    char *zInit = db_text(0, "SELECT value FROM vvar WHERE name='ci-comment'");
    prepare_commit_comment(&comment, zInit, &sCiInfo, vid);
    if( zInit && zInit[0] && fossil_strcmp(zInit, blob_str(&comment))==0 ){

      prompt_user("unchanged check-in comment.  continue (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
      if( cReply!='y' && cReply!='Y' ) fossil_exit(1);
    }
    free(zInit);
  }
  if( blob_size(&comment)==0 ){
    if( !dryRunFlag ){

      prompt_user("empty check-in comment.  continue (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
      if( cReply!='y' && cReply!='Y' ){
        fossil_exit(1);
      }
    }
  }else{

        blob_reset(&delta);
      }
    }else if( forceDelta ){
      fossil_fatal("unable to find a baseline-manifest for the delta");
    }
  }
  if( !noSign && !g.markPrivate && clearsign(&manifest, &manifest) ){

    prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
    cReply = blob_str(&ans)[0];
    if( cReply!='y' && cReply!='Y' ){
      fossil_exit(1);
    }
  }

    }
    if( !db_exists("SELECT 1 FROM vfile WHERE pathname='manifest.uuid'") ){
      zManFile = mprintf("%smanifest.uuid", g.zLocalRoot);
      file_delete(zManFile);
      free(zManFile);
    }
  }

}

/*
** COMMAND: checkout*
** COMMAND: co*
**
** Usage: %fossil checkout ?VERSION | --latest? ?OPTIONS?
**    or: %fossil co ?VERSION | --latest? ?OPTIONS?
**
** Check out a version specified on the command-line.  This command
** will abort if there are edited files in the current checkout unless
** the --force option appears on the command-line.  The --keep option
** leaves files on disk unchanged, except the manifest and manifest.uuid
** files.
**
** The --latest flag can be used in place of VERSION to checkout the
** latest version in the repository.
**
** Options:
**    --force   Ignore edited files in the current checkout
**    --keep    Only update the manifest and manifest.uuid files
**
** See also: update
*/
void checkout_cmd(void){
  int forceFlag;                 /* Force checkout even if edits exist */
  int keepFlag;                  /* Do not change any files on disk */
  int latestFlag;                /* Checkout the latest version */
  char *zVers;                   /* Version to checkout */
  int promptFlag;                /* True to prompt before overwriting */
  int vid, prior;
  Blob cksum1, cksum1b, cksum2;

  db_must_be_within_tree();
  db_begin_transaction();
  forceFlag = find_option("force","f",0)!=0;
  keepFlag = find_option("keep",0,0)!=0;
  latestFlag = find_option("latest",0,0)!=0;
  promptFlag = find_option("prompt",0,0)!=0 || forceFlag==0;
  if( (latestFlag!=0 && g.argc!=2) || (latestFlag==0 && g.argc!=3) ){

**
** Options:
**    --admin-user|-A USERNAME   Make USERNAME the administrator
**    --once                     Don't save url.
**    --private                  Also clone private branches 
**    --ssl-identity=filename    Use the SSL identity if requested by the server
**    --ssh-command|-c 'command' Use this SSH command
**    --httpauth|-B 'user:pass'  Add HTTP Basic Authorization to requests
**
** See also: init
*/
void clone_cmd(void){
  char *zPassword;
  const char *zDefaultUser;   /* Optional name of the default user */
  const char *zHttpAuth;      /* HTTP Authorization user:pass information */
  int nErr = 0;
  int bPrivate = 0;           /* Also clone private branches */
  int urlFlags = URL_PROMPT_PW | URL_REMEMBER;

  if( find_option("private",0,0)!=0 ) bPrivate = SYNC_PRIVATE;
  if( find_option("once",0,0)!=0) urlFlags &= ~URL_REMEMBER;
  zHttpAuth = find_option("httpauth","B",1);
  zDefaultUser = find_option("admin-user","A",1);
  clone_ssh_find_options();
  url_proxy_options();
  if( g.argc < 4 ){
    usage("?OPTIONS? FILE-OR-URL NEW-REPOSITORY");
  }
  db_open_config(0);
  if( file_size(g.argv[3])>0 ){
    fossil_fatal("file already exists: %s", g.argv[3]);
  }

  url_parse(g.argv[2], urlFlags);
  if( zDefaultUser==0 && g.url.user!=0 ) zDefaultUser = g.url.user;
  if( g.url.isFile ){
    file_copy(g.url.name, g.argv[3]);
    db_close(1);
    db_open_repository(g.argv[3]);
    db_record_repository_filename(g.argv[3]);
    url_remember();
    if( !bPrivate ) delete_private_content();
    shun_artifacts();
    db_create_default_users(1, zDefaultUser);

    db_begin_transaction();
    db_record_repository_filename(g.argv[3]);
    db_initial_setup(0, 0, zDefaultUser, 0);
    user_select();
    db_set("content-schema", CONTENT_SCHEMA, 0);
    db_set("aux-schema", AUX_SCHEMA, 0);
    db_set("rebuilt", get_version(), 0);
    remember_or_get_http_auth(zHttpAuth, urlFlags & URL_REMEMBER, g.argv[2]);
    url_remember();
    if( g.zSSLIdentity!=0 ){
      /* If the --ssl-identity option was specified, store it as a setting */
      Blob fn;
      blob_zero(&fn);
      file_canonical_name(g.zSSLIdentity, &fn, 0);
      db_set("ssl-identity", blob_str(&fn), 0);

  rebuild_db(0, 1, 0);
  fossil_print("project-id: %s\n", db_get("project-code", 0));
  zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
  fossil_print("admin-user: %s (password is \"%s\")\n", g.zLogin, zPassword);
  db_end_transaction(0);
}

/*
** If user chooses to use HTTP Authentication over unencrypted HTTP,
** remember decision.  Otherwise, if the URL is being changed and no 
** preference has been indicated, err on the safe side and revert the
** decision. Set the global preference if the URL is not being changed.
*/
void remember_or_get_http_auth(
  const char *zHttpAuth,  /* Credentials in the form "user:password" */
  int fRemember,          /* True to remember credentials for later reuse */
  const char *zUrl        /* URL for which these credentials apply */
){
  char *zKey = mprintf("http-auth:%s", g.url.canonical);
  if( zHttpAuth && zHttpAuth[0] ){
    g.zHttpAuth = mprintf("%s", zHttpAuth);
  }
  if( fRemember ){
    if( g.zHttpAuth && g.zHttpAuth[0] ){
      set_httpauth(g.zHttpAuth);
    }else if( zUrl && zUrl[0] ){
      db_unset(zKey, 0);
    }else{
      g.zHttpAuth = get_httpauth();
    }
  }else if( g.zHttpAuth==0 && zUrl==0 ){
    g.zHttpAuth = get_httpauth();
  }
  free(zKey);
}

/*
** Get the HTTP Authorization preference from db.
*/
char *get_httpauth(void){
  char *zKey = mprintf("http-auth:%s", g.url.canonical);
  return unobscure(db_get(zKey, 0));
  free(zKey);
}

/*
** Set the HTTP Authorization preference in db.
*/
void set_httpauth(const char *zHttpAuth){
  char *zKey = mprintf("http-auth:%s", g.url.canonical);
  db_set(zKey, obscure(zHttpAuth), 0);
  free(zKey);
}

/*
** Look for SSH clone command line options and setup in globals.
*/
void clone_ssh_find_options(void){
  const char *zSshCmd;        /* SSH command string */

  zSshCmd = find_option("ssh-command","c",1);

*/
int comment_print(const char *zText, int indent, int lineLength){
  int tlen = lineLength - indent;
  int si, sk, i, k;
  int doIndent = 0;
  char *zBuf;
  char zBuffer[400];
  int lineCnt = 0;

  if( zText==0 ) zText = "(NULL)";
  if( tlen<=0 ){
    tlen = strlen(zText);
  }
  if( tlen >= (sizeof(zBuffer)) ){
    zBuf = fossil_malloc(tlen+1);
  }else{
    zBuf = zBuffer;

#  endif
#else
# include <sys/types.h>
# include <signal.h>
# include <pwd.h>
#endif

/*
** Utility macro to wrap an argument with double quotes.
*/
#if !defined(COMPILER_STRINGIFY)
#  define COMPILER_STRINGIFY(x)  COMPILER_STRINGIFY1(x)
#  define COMPILER_STRINGIFY1(x) #x
#endif

/*
** Define the compiler variant, used to compile the project
*/
#if !defined(COMPILER_NAME)
#  if defined(__DMC__)
#    if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#      define COMPILER_NAME "dmc-" COMPILER_VERSION
#    else
#      define COMPILER_NAME "dmc"
#    endif
#  elif defined(__POCC__)
#    if defined(_M_X64)
#      if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#        define COMPILER_NAME "pellesc64-" COMPILER_VERSION
#      else
#        define COMPILER_NAME "pellesc64"
#      endif
#    else
#      if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#        define COMPILER_NAME "pellesc32-" COMPILER_VERSION
#      else
#        define COMPILER_NAME "pellesc32"
#      endif
#    endif
#  elif defined(_MSC_VER)
#    if !defined(COMPILER_VERSION)
#      define COMPILER_VERSION COMPILER_STRINGIFY(_MSC_VER)
#    endif
#    if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#      define COMPILER_NAME "msc-" COMPILER_VERSION
#    else
#      define COMPILER_NAME "msc"
#    endif
#  elif defined(__MINGW32__)
#    if !defined(COMPILER_VERSION)
#      if defined(__MINGW_VERSION)
#        if defined(__GNUC__)
#          if defined(__VERSION__)
#            define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW_VERSION) "-gcc-" __VERSION__
#          else
#            define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW_VERSION) "-gcc"
#          endif
#        else
#          define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW_VERSION)
#        endif
#      elif defined(__MINGW32_VERSION)
#        if defined(__GNUC__)
#          if defined(__VERSION__)
#            define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW32_VERSION) "-gcc-" __VERSION__
#          else
#            define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW32_VERSION) "-gcc"
#          endif
#        else
#          define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW32_VERSION)
#        endif
#      endif
#    endif
#    if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#      define COMPILER_NAME "mingw32-" COMPILER_VERSION
#    else
#      define COMPILER_NAME "mingw32"
#    endif
#  elif defined(_WIN32)
#    define COMPILER_NAME "win32"
#  elif defined(__GNUC__)
#    if !defined(COMPILER_VERSION)
#      if defined(__VERSION__)
#        define COMPILER_VERSION __VERSION__
#      endif
#    endif
#    if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#      define COMPILER_NAME "gcc-" COMPILER_VERSION
#    else
#      define COMPILER_NAME "gcc"
#    endif
#  else
#    define COMPILER_NAME "unknown"
#  endif
#endif

#if !defined(_RC_COMPILE_) && !defined(SQLITE_AMALGAMATION)

/*
** The following macros are used to cast pointers to integers and
** integers to pointers.  The way you do this varies from one compiler
** to the next, so we have developed the following set of #if statements
** to generate appropriate macros for a wide range of compilers.
**
** The correct "ANSI" way to do this is to use the intptr_t type.
** Unfortunately, that typedef is not available on all compilers, or
** if it is available, it requires an #include of specific headers
** that vary from one machine to the next.
*/
#if defined(__PTRDIFF_TYPE__)  /* This case should work for GCC */
# define FOSSIL_INT_TO_PTR(X)  ((void*)(__PTRDIFF_TYPE__)(X))
# define FOSSIL_PTR_TO_INT(X)  ((int)(__PTRDIFF_TYPE__)(X))

      usage(mprintf("%s AREA ?URL?", zMethod));
    }
    mask = configure_name_to_mask(g.argv[3], 1);
    if( g.argc==5 ){
      zServer = g.argv[4];
    }
    url_parse(zServer, URL_PROMPT_PW);
    if( g.url.protocol==0 ) fossil_fatal("no server URL specified");
    user_select();
    url_enable_proxy("via proxy: ");
    if( legacyFlag ) mask |= CONFIGSET_OLDFORMAT;
    if( overwriteFlag ) mask |= CONFIGSET_OVERWRITE;
    if( strncmp(zMethod, "push", n)==0 ){
      client_sync(0,0,(unsigned)mask);
    }else if( strncmp(zMethod, "pull", n)==0 ){

  bag_clear(&contentCache.available);
  bag_clear(&contentCache.inCache);
  contentCache.n = 0;
  contentCache.szTotal = 0;
}

/*
** Return the srcid associated with rid.  Or return 0 if rid is
** original content and not a delta.
*/
static int findSrcid(int rid){
  static Stmt q;
  int srcid;
  db_static_prepare(&q, "SELECT srcid FROM delta WHERE rid=:rid");
  db_bind_int(&q, ":rid", rid);

** Check to see if content is available for artifact "rid".  Return
** true if it is.  Return false if rid is a phantom or depends on
** a phantom.
*/
int content_is_available(int rid){
  int srcid;
  int depth = 0;  /* Limit to recursion depth */
  while( depth++ < 10000000 ){
    if( bag_find(&contentCache.missing, rid) ){
      return 0;
    }
    if( bag_find(&contentCache.available, rid) ){
      return 1;
    }
    if( content_size(rid, -1)<0 ){

      db_multi_exec("DELETE FROM orphan WHERE baseline=%d", rid);
    }

    /* Recursively dephantomize all artifacts that are derived by
    ** delta from artifact rid and which have not already been
    ** cross-linked.  */
    nChildUsed = 0;
    db_prepare(&q,
       "SELECT rid FROM delta"
       " WHERE srcid=%d"
       "   AND NOT EXISTS(SELECT 1 FROM mlink WHERE mid=delta.rid)",
       rid
    );
    while( db_step(&q)==SQLITE_ROW ){
      int child = db_column_int(&q, 0);

}

/*
** Write content into the database.  Return the record ID.  If the
** content is already in the database, just return the record ID.
**
** If srcId is specified, then pBlob is delta content from
** the srcId record.  srcId might be a phantom.
**
** pBlob is normally uncompressed text.  But if nBlob>0 then the
** pBlob value has already been compressed and nBlob is its uncompressed
** size.  If nBlob>0 then zUuid must be valid.
**
** zUuid is the UUID of the artifact, if it is specified.  When srcId is
** specified then zUuid must always be specified.  If srcId is zero,

  int size;
  int rid;
  Stmt s1;
  Blob cmpr;
  Blob hash;
  int markAsUnclustered = 0;
  int isDephantomize = 0;

  assert( g.repositoryOpen );
  assert( pBlob!=0 );
  assert( srcId==0 || zUuid!=0 );
  if( zUuid==0 ){
    assert( nBlob==0 );
    sha1sum_blob(pBlob, &hash);
  }else{

  /* If the srcId is specified, then the data we just added is
  ** really a delta.  Record this fact in the delta table.
  */
  if( srcId ){
    db_multi_exec("REPLACE INTO delta(rid,srcid) VALUES(%d,%d)", rid, srcId);
  }
  if( !isDephantomize && bag_find(&contentCache.missing, rid) &&
      (srcId==0 || content_is_available(srcId)) ){
    content_mark_available(rid);
  }
  if( isDephantomize ){
    after_dephantomize(rid, 0);
  }

  /* Add the element to the unclustered table if has never been
  ** previously seen.
  */
  if( markAsUnclustered ){
    db_multi_exec("INSERT OR IGNORE INTO unclustered VALUES(%d)", rid);
  }

/*
** Create a new phantom with the given UUID and return its artifact ID.
*/
int content_new(const char *zUuid, int isPrivate){
  int rid;
  static Stmt s1, s2, s3;

  assert( g.repositoryOpen );
  db_begin_transaction();
  if( uuid_is_shunned(zUuid) ){
    db_end_transaction(0);
    return 0;
  }
  db_static_prepare(&s1,

  int rc;
  db_static_prepare(&s1,
    "SELECT 1 FROM private WHERE rid=:rid"
  );
  db_bind_int(&s1, ":rid", rid);
  rc = db_step(&s1);
  db_reset(&s1);
  return rc==SQLITE_ROW;
}

/*
** Make sure an artifact is public.
*/
void content_make_public(int rid){
  static Stmt s1;
  db_static_prepare(&s1,
    "DELETE FROM private WHERE rid=:rid"
  );
  db_bind_int(&s1, ":rid", rid);

** the source of the delta.  It is OK to delta private->private and
** public->private and public->public.  Just no private->public delta.
**
** If srcid is a delta that depends on rid, then srcid is
** converted to undeltaed text.
**
** If either rid or srcid contain less than 50 bytes, or if the
** resulting delta does not achieve a compression of at least 25%
** the rid is left untouched.
**
** Return 1 if a delta is made and 0 if no delta occurs.
*/
int content_deltify(int rid, int srcid, int force){
  int s;
  Blob data, src, delta;

    fossil_print(
      "public artifact %S (%d) is a delta from private artifact %S (%d)\n",
      zId, rid, zSrc, srcid
    );
    nErr++;
  }
  db_finalize(&q);

  db_prepare(&q, "SELECT rid, uuid, size FROM blob ORDER BY rid");
  total = db_int(0, "SELECT max(rid) FROM blob");
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    int size = db_column_int(&q, 2);
    n1++;

    blob_reset(&cksum);
    n2++;
  }
  db_finalize(&q);
  fossil_print("%d non-phantom blobs (out of %d total) checked:  %d errors\n",
               n2, n1, nErr);
  if( bParse ){
    static const char *const azType[] = { 0, "manifest", "cluster",
        "control", "wiki", "ticket", "attachment", "event" };
    int i;
    fossil_print("%d total control artifacts\n", nCA);
    for(i=1; i<count(azType); i++){
      if( anCA[i] ) fossil_print("  %d %ss\n", anCA[i], azType[i]);
    }
  }
}

    fossil_print("%s: %s\n         %s %s %S (%d) %s\n",
                  zErrType, zUuid, zRole, zCFType, zSrc, p->rid, zDate);
    if( zDetail && zDetail[0] ){
      fossil_print("         %s\n", zDetail);
    }
    fossil_free(zSrc);
    fossil_free(zDate);
    rc = 1;
  }
  return rc;
}

/*
** COMMAND: test-missing
**

    content_get(rid, &content);
    p = manifest_parse(&content, rid, 0);
    if( p ){
      nArtifact++;
      nErr += check_exists(p->zBaseline, flags, p, "baseline of", 0);
      nErr += check_exists(p->zAttachSrc, flags, p, "file of", 0);
      for(i=0; i<p->nFile; i++){
        nErr += check_exists(p->aFile[i].zUuid, flags, p, "file of",
                             p->aFile[i].zName);
      }
      for(i=0; i<p->nParent; i++){
        nErr += check_exists(p->azParent[i], flags, p, "parent of", 0);
      }
      for(i=0; i<p->nCherrypick; i++){
        nErr +=  check_exists(p->aCherrypick[i].zCPTarget+1, flags, p,
                              "cherry-pick target of", 0);
        nErr +=  check_exists(p->aCherrypick[i].zCPBase, flags, p,
                              "cherry-pick baseline of", 0);
      }
      for(i=0; i<p->nCChild; i++){
        nErr += check_exists(p->azCChild[i], flags, p, "in", 0);
      }
      for(i=0; i<p->nTag; i++){
        nErr += check_exists(p->aTag[i].zUuid, flags, p, "target of", 0);
      }
      manifest_destroy(p);
    }
  }
  db_finalize(&q);
  if( nErr>0 || quietFlag==0 ){
    fossil_print("%d missing or shunned references in %d control artifacts\n",
                 nErr, nArtifact);
  }
}

#if INTERFACE
/*
** An single SQL statement is represented as an instance of the following
** structure.
*/
struct Stmt {
  Blob sql;               /* The SQL for this statement */
  sqlite3_stmt *pStmt;    /* The results of sqlite3_prepare_v2() */
  Stmt *pNext, *pPrev;    /* List of all unfinalized statements */
  int nStep;              /* Number of sqlite3_step() calls */
};

/*
** Copy this to initialize a Stmt object to a clean/empty state. This
** is useful to help avoid assertions when performing cleanup in some

** the following structure.
*/
static struct DbLocalData {
  int nBegin;               /* Nesting depth of BEGIN */
  int doRollback;           /* True to force a rollback */
  int nCommitHook;          /* Number of commit hooks */
  Stmt *pAllStmt;           /* List of all unfinalized statements */
  int nPrepare;             /* Number of calls to sqlite3_prepare_v2() */
  int nDeleteOnFail;        /* Number of entries in azDeleteOnFail[] */
  struct sCommitHook {
    int (*xHook)(void);         /* Functions to call at db_end_transaction() */
    int sequence;               /* Call functions in sequence order */
  } aHook[5];
  char *azDeleteOnFail[3];  /* Files to delete on a failure */
  char *azBeforeCommit[5];  /* Commands to run prior to COMMIT */

int db_bind_double(Stmt *pStmt, const char *zParamName, double rValue){
  return sqlite3_bind_double(pStmt->pStmt, paramIdx(pStmt, zParamName), rValue);
}
int db_bind_text(Stmt *pStmt, const char *zParamName, const char *zValue){
  return sqlite3_bind_text(pStmt->pStmt, paramIdx(pStmt, zParamName), zValue,
                           -1, SQLITE_STATIC);
}
int db_bind_text16(Stmt *pStmt, const char *zParamName, const char *zValue){
  return sqlite3_bind_text16(pStmt->pStmt, paramIdx(pStmt, zParamName), zValue,
                             -1, SQLITE_STATIC);
}
int db_bind_null(Stmt *pStmt, const char *zParamName){
  return sqlite3_bind_null(pStmt->pStmt, paramIdx(pStmt, zParamName));
}
int db_bind_blob(Stmt *pStmt, const char *zParamName, Blob *pBlob){
  return sqlite3_bind_blob(pStmt->pStmt, paramIdx(pStmt, zParamName),
                          blob_buffer(pBlob), blob_size(pBlob), SQLITE_STATIC);
}

** Open a database file.  Return a pointer to the new database
** connection.  An error results in process abort.
*/
LOCAL sqlite3 *db_open(const char *zDbName){
  int rc;
  sqlite3 *db;

#if defined(__CYGWIN__) && USE_SYSTEM_SQLITE+0!=1
  zDbName = fossil_utf8_to_filename(zDbName);
#endif
  if( g.fSqlTrace ) fossil_trace("-- sqlite3_open: [%s]\n", zDbName);
  rc = sqlite3_open_v2(
       zDbName, &db,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       g.zVfsName

  if( file_isdir(zHome)!=1 ){
    fossil_fatal("invalid home directory: %s", zHome);
  }
#if defined(_WIN32) || defined(__CYGWIN__)
  /* . filenames give some window systems problems and many apps problems */
  zDbName = mprintf("%//_fossil", zHome);
#else



  zDbName = mprintf("%s/.fossil", zHome);
#endif
  if( file_size(zDbName)<1024*3 ){
    if( file_access(zHome, W_OK) ){
      fossil_fatal("home directory %s must be writeable", zHome);
    }
    db_init_database(zDbName, zConfigSchema, (char*)0);
  }

  if( file_access(zDbName, W_OK) ){
    fossil_fatal("configuration file %s must be writeable", zDbName);
  }

  if( useAttach ){
    db_open_or_attach(zDbName, "configdb", &g.useAttach);
    g.dbConfig = 0;
    g.zConfigDbType = 0;
  }else{
    g.useAttach = 0;
    g.dbConfig = db_open(zDbName);

    }else{
#ifdef FOSSIL_ENABLE_JSON
      g.json.resultCode = FSL_JSON_E_DB_NOT_VALID;
#endif
      fossil_panic("not a valid repository: %s", zDbName);
    }
  }



  g.zRepositoryName = mprintf("%s", zDbName);

  db_open_or_attach(g.zRepositoryName, "repository", 0);
  g.repositoryOpen = 1;
  /* Cache "allow-symlinks" option, because we'll need it on every stat call */
  g.allowSymlinks = db_get_boolean("allow-symlinks", 0);
}

/*

** Open a connection to the local repository in FILENAME.  A checkout
** for the repository is created with its root at the working directory.
** If VERSION is specified then that version is checked out.  Otherwise
** the latest version is checked out.  No files other than "manifest"
** and "manifest.uuid" are modified if the --keep option is present.
**
** Options:
**   --empty    Initialize checkout as being empty, but still connected
**              with the local repository. If you commit this checkout,
**              it will become a new "initial" commit in the repository.
**   --keep     Only modify the manifest and manifest.uuid files
**   --nested   Allow opening a repository inside an opened checkout
**
** See also: close
*/
void cmd_open(void){
  int emptyFlag;
  int keepFlag;
  int allowNested;
  char **oldArgv;
  int oldArgc;
  static char *azNewArgv[] = { 0, "checkout", "--prompt", 0, 0, 0 };

  url_proxy_options();
  emptyFlag = find_option("empty",0,0)!=0;
  keepFlag = find_option("keep",0,0)!=0;
  allowNested = find_option("nested",0,0)!=0;
  if( g.argc!=3 && g.argc!=4 ){
    usage("REPOSITORY-FILENAME ?VERSION?");
  }
  if( !allowNested && db_open_local(0) ){
    fossil_fatal("already within an open tree rooted at %s", g.zLocalRoot);

  db_lset("repository", g.argv[2]);
  db_record_repository_filename(g.argv[2]);
  db_lset_int("checkout", 0);
  oldArgv = g.argv;
  oldArgc = g.argc;
  azNewArgv[0] = g.argv[0];
  g.argv = azNewArgv;
  if( !emptyFlag){
    g.argc = 3;
    if( oldArgc==4 ){
      azNewArgv[g.argc-1] = oldArgv[3];
    }else if( !db_exists("SELECT 1 FROM event WHERE type='ci'") ){
      azNewArgv[g.argc-1] = "--latest";
    }else{
      azNewArgv[g.argc-1] = db_get("main-branch", "trunk");
    }
    if( keepFlag ){
      azNewArgv[g.argc++] = "--keep";
    }
    checkout_cmd();
  }
  g.argc = 2;
  info_cmd();
}

/*
** Print the value of a setting named zName
*/

  { "http-port",        0,             16, 0, 0, "8080"                },
  { "https-login",      0,              0, 0, 0, "off"                 },
  { "ignore-glob",      0,             40, 1, 0, ""                    },
  { "keep-glob",        0,             40, 1, 0, ""                    },
  { "localauth",        0,              0, 0, 0, "off"                 },
  { "main-branch",      0,             40, 0, 0, "trunk"               },
  { "manifest",         0,              0, 1, 0, "off"                 },
  { "max-loadavg",      0,             25, 0, 0, "0.0"                 },
  { "max-upload",       0,             25, 0, 0, "250000"              },
  { "mtime-changes",    0,              0, 0, 0, "on"                  },
  { "pgp-command",      0,             40, 0, 0, "gpg --clearsign -o " },
  { "proxy",            0,             32, 0, 0, "off"                 },
  { "relative-paths",   0,              0, 0, 0, "on"                  },
  { "repo-cksum",       0,              0, 0, 0, "on"                  },
  { "self-register",    0,              0, 0, 0, "off"                 },

**
**    main-branch      The primary branch for the project.  Default: trunk
**
**    manifest         If enabled, automatically create files "manifest" and
**     (versionable)   "manifest.uuid" in every checkout.  The SQLite and
**                     Fossil repositories both require this.  Default: off.
**
**    max-loadavg      Some CPU-intensive web pages (ex: /zip, /tarball, /blame)
**                     are disallowed if the system load average goes above this
**                     value.  "0.0" means no limit.  This only works on unix.
**                     Only local settings of this value make a difference since
**                     when running as a web-server, Fossil does not open the
**                     global configuration database.
**
**    max-upload       A limit on the size of uplink HTTP requests.  The
**                     default is 250000 bytes.
**
**    mtime-changes    Use file modification times (mtimes) to detect when
**                     files have been modified.  (Default "on".)
**
**    pgp-command      Command used to clear-sign manifests at check-in.

    *(zDelta++) = ':';
    memcpy(zDelta, &zOut[base], lenOut-base);
    zDelta += lenOut-base;
  }
  /* Output the final checksum record. */
  putInt(checksum(zOut, lenOut), &zDelta);
  *(zDelta++) = ';';
  fossil_free(collide);
  return zDelta - zOrigDelta; 
}

/*
** Return the size (in bytes) of the output from applying
** a delta. 
**

}

/*
** Load the record ID rid and up to N-1 closest ancestors into
** the "ok" table.
*/
void compute_ancestors(int rid, int N, int directOnly){




































  db_multi_exec(
    "WITH RECURSIVE "
    "  ancestor(rid, mtime) AS ("
    "    SELECT %d, mtime FROM event WHERE objid=%d "
    "    UNION "
    "    SELECT plink.pid, event.mtime"
    "      FROM ancestor, plink, event"

/*
** Flag parameters to the text_diff() routine used to control the formatting
** of the diff output.
*/
#define DIFF_CONTEXT_MASK ((u64)0x0000ffff) /* Lines of context. Default if 0 */
#define DIFF_WIDTH_MASK   ((u64)0x00ff0000) /* side-by-side column width */
#define DIFF_IGNORE_EOLWS ((u64)0x01000000) /* Ignore end-of-line whitespace */
#define DIFF_IGNORE_ALLWS ((u64)0x03000000) /* Ignore all whitespace */
#define DIFF_SIDEBYSIDE   ((u64)0x04000000) /* Generate a side-by-side diff */
#define DIFF_VERBOSE      ((u64)0x08000000) /* Missing shown as empty files */
#define DIFF_BRIEF        ((u64)0x10000000) /* Show filenames only */

#define DIFF_HTML         ((u64)0x20000000) /* Render for HTML */
#define DIFF_LINENO       ((u64)0x40000000) /* Show line numbers */

#define DIFF_NOOPT        (((u64)0x01)<<32) /* Suppress optimizations (debug) */
#define DIFF_INVERT       (((u64)0x02)<<32) /* Invert the diff (debug) */
#define DIFF_CONTEXT_EX   (((u64)0x04)<<32) /* Use context even if zero */
#define DIFF_NOTTOOBIG    (((u64)0x08)<<32) /* Only display if not too big */
#define DIFF_STRIP_EOLCR  (((u64)0x10)<<32) /* Strip trailing CR */

/*
** These error messages are shared in multiple locations.  They are defined
** here for consistency.
*/
#define DIFF_CANNOT_COMPUTE_BINARY \
    "cannot compute difference between binary files\n"

#define DIFF_CANNOT_COMPUTE_SYMLINK \
    "cannot compute difference between symlink and regular file\n"

#define DIFF_TOO_MANY_CHANGES \
    "more than 10,000 changes\n"

#define DIFF_WHITESPACE_ONLY \
    "whitespace changes only\n"

/*
** Maximum length of a line in a text file, in bytes.  (2**13 = 8192 bytes)
*/
#define LENGTH_MASK_SZ  13
#define LENGTH_MASK     ((1<<LENGTH_MASK_SZ)-1)

#endif /* INTERFACE */

/*
** Information about each line of a file being diffed.
**
** The lower LENGTH_MASK_SZ bits of the hash (DLine.h) are the length
** of the line.  If any line is longer than LENGTH_MASK characters,
** the file is considered binary.
*/
typedef struct DLine DLine;
struct DLine {
  const char *z;        /* The text of the line */
  unsigned int h;       /* Hash of the line */
  unsigned short indent;  /* Indent of the line. Only !=0 with -w/-Z option */
  unsigned short n;     /* number of bytes */
  unsigned int iNext;   /* 1+(Index of next line with same the same hash) */

  /* an array of DLine elements serves two purposes.  The fields
  ** above are one per line of input text.  But each entry is also
  ** a bucket in a hash table, as follows: */
  unsigned int iHash;   /* 1+(first entry in the hash chain) */
};

/*
** Length of a dline
*/
#define LENGTH(X)   ((X)->n)

/*
** A context for running a raw diff.
**
** The aEdit[] array describes the raw diff.  Each triple of integers in
** aEdit[] means:
**

  int *aEdit;        /* Array of copy/delete/insert triples */
  int nEdit;         /* Number of integers (3x num of triples) in aEdit[] */
  int nEditAlloc;    /* Space allocated for aEdit[] */
  DLine *aFrom;      /* File on left side of the diff */
  int nFrom;         /* Number of lines in aFrom[] */
  DLine *aTo;        /* File on right side of the diff */
  int nTo;           /* Number of lines in aTo[] */
  int (*same_fn)(const DLine *, const DLine *); /* Function to be used for comparing */
};

/*
** Return an array of DLine objects containing a pointer to the
** start of each line and a hash of that line.  The lower
** bits of the hash store the length of each line.
**
** Trailing whitespace is removed from each line.  2010-08-20:  Not any
** more.  If trailing whitespace is ignored, the "patch" command gets
** confused by the diff output.  Ticket [a9f7b23c2e376af5b0e5b]
**
** Return 0 if the file is binary or contains a line that is
** too long.
**
** Profiling show that in most cases this routine consumes the bulk of
** the CPU time on a diff.
*/
static DLine *break_into_lines(const char *z, int n, int *pnLine, u64 diffFlags){
  int nLine, i, j, k, s, x;
  unsigned int h, h2;
  DLine *a;

  /* Count the number of lines.  Allocate space to hold
  ** the returned array.
  */
  for(i=j=0, nLine=1; i<n; i++, j++){

  if( n==0 ){
    *pnLine = 0;
    return a;
  }

  /* Fill in the array */
  for(i=0; i<nLine; i++){
    for(j=0; z[j] && z[j]!='\n'; j++){}
    a[i].z = z;

    k = j;
    if( diffFlags & DIFF_STRIP_EOLCR ){
      if( k>0 && z[k-1]=='\r' ){ k--; }
    }
    a[i].n = k;
    s = 0;
    if( diffFlags & DIFF_IGNORE_EOLWS ){
      while( k>0 && fossil_isspace(z[k-1]) ){ k--; }
    }
    if( (diffFlags & DIFF_IGNORE_ALLWS)==DIFF_IGNORE_ALLWS ){
      int numws = 0;
      while( s<k && fossil_isspace(z[s]) ){ s++; }
      for(h=0, x=s; x<k; x++){
        if( fossil_isspace(z[x]) ){
          ++numws;
        }else{
          h = h ^ (h<<2) ^ z[x];
        }
      }
      k -= numws;
    }else{
      for(h=0, x=s; x<k; x++){
        h = h ^ (h<<2) ^ z[x];
      }
    }
    a[i].indent = s;
    a[i].h = h = (h<<LENGTH_MASK_SZ) | (k-s);
    h2 = h % nLine;
    a[i].iNext = a[h2].iHash;
    a[h2].iHash = i+1;
    z += j+1;
  }

  /* Return results */
  *pnLine = nLine;
  return a;
}

/*
** Return true if two DLine elements are identical.
*/
static int same_dline(const DLine *pA, const DLine *pB){
  return pA->h==pB->h && memcmp(pA->z,pB->z, pA->h&LENGTH_MASK)==0;
}

/*
** Return true if two DLine elements are identical, ignoring
** all whitespace. The indent field of pA/pB already points
** to the first non-space character in the string.
*/

static int same_dline_ignore_allws(const DLine *pA, const DLine *pB){
  int a = pA->indent, b = pB->indent;
  if( pA->h==pB->h ){
    while( a<pA->n && b<pB->n ){
      if( pA->z[a++] != pB->z[b++] ) return 0;
      while( a<pA->n && fossil_isspace(pA->z[a])) ++a;
      while( b<pB->n && fossil_isspace(pB->z[b])) ++b;
    }
    return pA->n-a == pB->n-b;
  }
  return 0;
}

/*
** Return true if the regular expression *pRe matches any of the
** N dlines
*/
static int re_dline_match(

    if( pRe && re_dline_match(pRe, pLine, 1)==0 ){
      cPrefix = ' ';
    }else if( cPrefix=='+' ){
      blob_append(pOut, "<span class=\"diffadd\">", -1);
    }else if( cPrefix=='-' ){
      blob_append(pOut, "<span class=\"diffrm\">", -1);
    }
    htmlize_to_blob(pOut, pLine->z, pLine->n);
    if( cPrefix!=' ' ){
      blob_append(pOut, "</span>", -1);
    }
  }else{
    blob_append(pOut, pLine->z, pLine->n);
  }
  blob_append(pOut, "\n", 1);
}

/*
** Add two line numbers to the beginning of an output line for a context
** diff.  One or the other of the two numbers might be zero, which means

        appendDiffLine(pOut, '+', &B[b+j], html, pRe);
      }
      b += m;
      if( i<nr-1 ){
        m = R[r+i*3+3];
        for(j=0; j<m; j++){
          if( showLn ) appendDiffLineno(pOut, a+j+1, b+j+1, html);
          appendDiffLine(pOut, ' ', &A[a+j], html, 0);
        }
        b += m;
        a += m;
      }
    }

    /* Show the final common area */
    assert( nr==i );
    m = R[r+nr*3];
    if( m>nContext ) m = nContext;
    for(j=0; j<m; j++){
      if( showLn ) appendDiffLineno(pOut, a+j+1, b+j+1, html);
      appendDiffLine(pOut, ' ', &A[a+j], html, 0);
    }
  }
}

/*
** Status of a single output line
*/

** rendering to width bytes if col is SBS_TXTA and escHtml is false.
**
** This comment contains multibyte unicode characters (ü, Æ, ð) in order
** to test the ability of the diff code to handle such characters.
*/
static void sbsWriteText(SbsLine *p, DLine *pLine, int col){
  Blob *pCol = p->apCols[col];
  int n = pLine->n;
  int i;   /* Number of input characters consumed */
  int k;   /* Cursor position */
  int needEndSpan = 0;
  const char *zIn = pLine->z;
  int w = p->width;
  int colorize = p->escHtml;
  if( colorize && p->pRe && re_dline_match(p->pRe, pLine, 1)==0 ){

  int nLeftDiff;       /* nLeft - nPrefix - nSuffix */
  int nRightDiff;      /* nRight - nPrefix - nSuffix */
  int aLCS[4];         /* Bounds of common middle segment */
  static const char zClassRm[]   = "<span class=\"diffrm\">";
  static const char zClassAdd[]  = "<span class=\"diffadd\">";
  static const char zClassChng[] = "<span class=\"diffchng\">";

  nLeft = pLeft->n;
  zLeft = pLeft->z;
  nRight = pRight->n;
  zRight = pRight->z;
  nShort = nLeft<nRight ? nLeft : nRight;

  nPrefix = 0;
  while( nPrefix<nShort && zLeft[nPrefix]==zRight[nPrefix] ){
    nPrefix++;
  }

  int score;                 /* Final score.  0..100 */
  unsigned char c;           /* Character being examined */
  unsigned char aFirst[256]; /* aFirst[X] = index in zB[] of first char X */
  unsigned char aNext[252];  /* aNext[i] = index in zB[] of next zB[i] char */

  zA = pA->z;
  zB = pB->z;
  nA = pA->n;
  nB = pB->n;
  while( nA>0 && fossil_isspace(zA[0]) ){ nA--; zA++; }
  while( nA>0 && fossil_isspace(zA[nA-1]) ){ nA--; }
  while( nB>0 && fossil_isspace(zB[0]) ){ nB--; zB++; }
  while( nB>0 && fossil_isspace(zB[nB-1]) ){ nB--; }
  if( nA>250 ) nA = 250;
  if( nB>250 ) nB = 250;
  avg = (nA+nB)/2;

      s.iStart = s.iEnd = -1;
      sbsWriteText(&s, &A[a+j], SBS_TXTA);
      sbsWriteMarker(&s, "   ", "");
      sbsWriteLineno(&s, b+j, SBS_LNB);
      sbsWriteText(&s, &B[b+j], SBS_TXTB);
    }
  }

  if( s.escHtml && blob_size(s.apCols[SBS_LNA])>0 ){
    blob_append(pOut, "<table class=\"sbsdiffcols\"><tr>\n", -1);
    for(i=SBS_LNA; i<=SBS_TXTB; i++){
      sbsWriteColumn(pOut, s.apCols[i], i);
      blob_reset(s.apCols[i]);
    }
    blob_append(pOut, "</tr></table>\n", -1);

  int i, j;                  /* Loop counters */
  int k;                     /* Length of a candidate subsequence */
  int iSXb = iS1;            /* Best match so far */
  int iSYb = iS2;            /* Best match so far */

  for(i=iS1; i<iE1-mxLength; i++){
    for(j=iS2; j<iE2-mxLength; j++){
      if( !p->same_fn(&p->aFrom[i], &p->aTo[j]) ) continue;
      if( mxLength && !p->same_fn(&p->aFrom[i+mxLength], &p->aTo[j+mxLength]) ){
        continue;
      }
      k = 1;
      while( i+k<iE1 && j+k<iE2 && p->same_fn(&p->aFrom[i+k],&p->aTo[j+k]) ){
        k++;
      }
      if( k>mxLength ){
        iSXb = i;
        iSYb = j;
        mxLength = k;
      }

  iSYb = iSYp = iS2;
  iEYb = iEYp = iS2;
  mid = (iE1 + iS1)/2;
  for(i=iS1; i<iE1; i++){
    int limit = 0;
    j = p->aTo[p->aFrom[i].h % p->nTo].iHash;
    while( j>0
      && (j-1<iS2 || j>=iE2 || !p->same_fn(&p->aFrom[i], &p->aTo[j-1]))
    ){
      if( limit++ > 10 ){
        j = 0;
        break;
      }
      j = p->aTo[j-1].iNext;
    }
    if( j==0 ) continue;
    assert( i>=iSXb && i>=iSXp );
    if( i<iEXb && j>=iSYb && j<iEYb ) continue;
    if( i<iEXp && j>=iSYp && j<iEYp ) continue;
    iSX = i;
    iSY = j-1;
    pA = &p->aFrom[iSX-1];
    pB = &p->aTo[iSY-1];
    n = minInt(iSX-iS1, iSY-iS2);
    for(k=0; k<n && p->same_fn(pA,pB); k++, pA--, pB--){}
    iSX -= k;
    iSY -= k;
    iEX = i+1;
    iEY = j;
    pA = &p->aFrom[iEX];
    pB = &p->aTo[iEY];
    n = minInt(iE1-iEX, iE2-iEY);
    for(k=0; k<n && p->same_fn(pA,pB); k++, pA++, pB++){}
    iEX += k;
    iEY += k;
    skew = (iSX-iS1) - (iSY-iS2);
    if( skew<0 ) skew = -skew;
    dist = (iSX+iEX)/2 - mid;
    if( dist<0 ) dist = -dist;
    score = (iEX - iSX)*(sqlite3_int64)span - (skew + dist);

*/
static void diff_all(DContext *p){
  int mnE, iS, iE1, iE2;

  /* Carve off the common header and footer */
  iE1 = p->nFrom;
  iE2 = p->nTo;
  while( iE1>0 && iE2>0 && p->same_fn(&p->aFrom[iE1-1], &p->aTo[iE2-1]) ){
    iE1--;
    iE2--;
  }
  mnE = iE1<iE2 ? iE1 : iE2;
  for(iS=0; iS<mnE && p->same_fn(&p->aFrom[iS],&p->aTo[iS]); iS++){}

  /* do the difference */
  if( iS>0 ){
    appendTriple(p, iS, 0, 0);
  }
  diff_step(p, iS, iE1, iS, iE2);
  if( iE1<p->nFrom ){

    lnFrom += cpy;
    lnTo += cpy;

    /* Shift insertions toward the beginning of the file */
    while( cpy>0 && del==0 && ins>0 ){
      DLine *pTop = &p->aFrom[lnFrom-1];  /* Line before start of insert */
      DLine *pBtm = &p->aTo[lnTo+ins-1];  /* Last line inserted */
      if( p->same_fn(pTop, pBtm)==0 ) break;
      if( LENGTH(pTop+1)+LENGTH(pBtm)<=LENGTH(pTop)+LENGTH(pBtm-1) ) break;
      lnFrom--;
      lnTo--;
      p->aEdit[r]--;
      p->aEdit[r+3]++;
      cpy--;
    }

    /* Shift insertions toward the end of the file */
    while( r+3<p->nEdit && p->aEdit[r+3]>0 && del==0 && ins>0 ){
      DLine *pTop = &p->aTo[lnTo];       /* First line inserted */
      DLine *pBtm = &p->aTo[lnTo+ins];   /* First line past end of insert */
      if( p->same_fn(pTop, pBtm)==0 ) break;
      if( LENGTH(pTop)+LENGTH(pBtm-1)<=LENGTH(pTop+1)+LENGTH(pBtm) ) break;
      lnFrom++;
      lnTo++;
      p->aEdit[r]++;
      p->aEdit[r+3]--;
      cpy++;
    }

    /* Shift deletions toward the beginning of the file */
    while( cpy>0 && del>0 && ins==0 ){
      DLine *pTop = &p->aFrom[lnFrom-1];     /* Line before start of delete */
      DLine *pBtm = &p->aFrom[lnFrom+del-1]; /* Last line deleted */
      if( p->same_fn(pTop, pBtm)==0 ) break;
      if( LENGTH(pTop+1)+LENGTH(pBtm)<=LENGTH(pTop)+LENGTH(pBtm-1) ) break;
      lnFrom--;
      lnTo--;
      p->aEdit[r]--;
      p->aEdit[r+3]++;
      cpy--;
    }

    /* Shift deletions toward the end of the file */
    while( r+3<p->nEdit && p->aEdit[r+3]>0 && del>0 && ins==0 ){
      DLine *pTop = &p->aFrom[lnFrom];     /* First line deleted */
      DLine *pBtm = &p->aFrom[lnFrom+del]; /* First line past end of delete */
      if( p->same_fn(pTop, pBtm)==0 ) break;
      if( LENGTH(pTop)+LENGTH(pBtm-1)<=LENGTH(pTop)+LENGTH(pBtm) ) break;
      lnFrom++;
      lnTo++;
      p->aEdit[r]++;
      p->aEdit[r+3]--;
      cpy++;
    }

int *text_diff(
  Blob *pA_Blob,   /* FROM file */
  Blob *pB_Blob,   /* TO file */
  Blob *pOut,      /* Write diff here if not NULL */
  ReCompiled *pRe, /* Only output changes where this Regexp matches */
  u64 diffFlags    /* DIFF_* flags defined above */
){
  int ignoreWs; /* Ignore whitespace */
  DContext c;

  if( diffFlags & DIFF_INVERT ){
    Blob *pTemp = pA_Blob;
    pA_Blob = pB_Blob;
    pB_Blob = pTemp;
  }
  ignoreWs = (diffFlags & DIFF_IGNORE_ALLWS)!=0;
  blob_to_utf8_no_bom(pA_Blob, 0);
  blob_to_utf8_no_bom(pB_Blob, 0);

  /* Prepare the input files */
  memset(&c, 0, sizeof(c));
  if( (diffFlags & DIFF_IGNORE_ALLWS)==DIFF_IGNORE_ALLWS ){
    c.same_fn = same_dline_ignore_allws;
  }else{
    c.same_fn = same_dline;
  }
  c.aFrom = break_into_lines(blob_str(pA_Blob), blob_size(pA_Blob),
                             &c.nFrom, diffFlags);
  c.aTo = break_into_lines(blob_str(pB_Blob), blob_size(pB_Blob),
                           &c.nTo, diffFlags);
  if( c.aFrom==0 || c.aTo==0 ){
    fossil_free(c.aFrom);
    fossil_free(c.aTo);
    if( pOut ){
      diff_errmsg(pOut, DIFF_CANNOT_COMPUTE_BINARY, diffFlags);
    }
    return 0;
  }

  /* Compute the difference */
  diff_all(&c);
  if( ignoreWs && c.nEdit==6 && c.aEdit[1]==0 && c.aEdit[2]==0 ){
    fossil_free(c.aFrom);
    fossil_free(c.aTo);
    fossil_free(c.aEdit);
    if( pOut ) diff_errmsg(pOut, DIFF_WHITESPACE_ONLY, diffFlags);
    return 0;
  }
  if( (diffFlags & DIFF_NOTTOOBIG)!=0 ){
    int i, m, n;
    int *a = c.aEdit;
    int mx = c.nEdit;
    for(i=m=n=0; i<mx; i+=3){ m += a[i]; n += a[i+1]+a[i+2]; }
    if( n>10000 ){
      fossil_free(c.aFrom);
      fossil_free(c.aTo);
      fossil_free(c.aEdit);
      if( pOut ) diff_errmsg(pOut, DIFF_TOO_MANY_CHANGES, diffFlags);
      return 0;
    }
  }
  if( (diffFlags & DIFF_NOOPT)==0 ){
    diff_optimize(&c);
  }

  }
}

/*
** Process diff-related command-line options and return an appropriate
** "diffFlags" integer.
**
**   --brief                    Show filenames only    DIFF_BRIEF
**   -c|--context N             N lines of context.    DIFF_CONTEXT_MASK
**   --html                     Format for HTML        DIFF_HTML
**   --invert                   Invert the diff        DIFF_INVERT
**   -n|--linenum               Show line numbers      DIFF_LINENO
**   --noopt                    Disable optimization   DIFF_NOOPT
**   --strip-trailing-cr        Strip trailing CR      DIFF_STRIP_EOLCR
**   --unified                  Unified diff.          ~DIFF_SIDEBYSIDE
**   -w|--ignore-all-space      Ignore all whitespaces DIFF_IGNORE_ALLWS
**   -W|--width N               N character lines.     DIFF_WIDTH_MASK
**   -y|--side-by-side          Side-by-side diff.     DIFF_SIDEBYSIDE
**   -Z|--ignore-trailing-space Ignore eol-whitespaces DIFF_IGNORE_EOLWS
*/
u64 diff_options(void){
  u64 diffFlags = 0;
  const char *z;
  int f;
  if( find_option("ignore-trailing-space","Z",0)!=0 ){
    diffFlags = DIFF_IGNORE_EOLWS;
  }
  if( find_option("ignore-all-space","w",0)!=0 ){
    diffFlags = DIFF_IGNORE_ALLWS; /* stronger than DIFF_IGNORE_EOLWS */
  }
  if( find_option("strip-trailing-cr",0,0)!=0 ){
    diffFlags |= DIFF_STRIP_EOLCR;
  }
  if( find_option("side-by-side","y",0)!=0 ) diffFlags |= DIFF_SIDEBYSIDE;
  if( find_option("unified",0,0)!=0 ) diffFlags &= ~DIFF_SIDEBYSIDE;
  if( (z = find_option("context","c",1))!=0 && (f = atoi(z))>=0 ){
    if( f > DIFF_CONTEXT_MASK ) f = DIFF_CONTEXT_MASK;
    diffFlags |= f + DIFF_CONTEXT_EX;
  }
  if( (z = find_option("width","W",1))!=0 && (f = atoi(z))>0 ){

** of the following structure.
*/
typedef struct Annotator Annotator;
struct Annotator {
  DContext c;       /* The diff-engine context */
  struct AnnLine {  /* Lines of the original files... */
    const char *z;       /* The text of the line */
    short int n;         /* Number of bytes (omitting trailing \n) */
    short int iVers;     /* Level at which tag was set */
  } *aOrig;
  int nOrig;        /* Number of elements in aOrig[] */
  int nVers;        /* Number of versions analyzed */
  int bLimit;       /* True if the iLimit was reached */
  struct AnnVers {
    const char *zFUuid;   /* File being analyzed */

};

/*
** Initialize the annotation process by specifying the file that is
** to be annotated.  The annotator takes control of the input Blob and
** will release it when it is finished with it.
*/
static int annotation_start(Annotator *p, Blob *pInput, u64 diffFlags){
  int i;

  memset(p, 0, sizeof(*p));
  if( (diffFlags & DIFF_IGNORE_ALLWS)==DIFF_IGNORE_ALLWS ){
    p->c.same_fn = same_dline_ignore_allws;
  }else{
    p->c.same_fn = same_dline;
  }
  p->c.aTo = break_into_lines(blob_str(pInput), blob_size(pInput),&p->c.nTo,
                              diffFlags);
  if( p->c.aTo==0 ){
    return 1;
  }
  p->aOrig = fossil_malloc( sizeof(p->aOrig[0])*p->c.nTo );
  for(i=0; i<p->c.nTo; i++){
    p->aOrig[i].z = p->c.aTo[i].z;
    p->aOrig[i].n = p->c.aTo[i].n;
    p->aOrig[i].iVers = -1;
  }
  p->nOrig = p->c.nTo;
  return 0;
}

/*
** The input pParent is the next most recent ancestor of the file
** being annotated.  Do another step of the annotation.  Return true
** if additional annotation is required.  zPName is the tag to insert
** on each line of the file being annotated that was contributed by
** pParent.  Memory to hold zPName is leaked.
*/
static int annotation_step(Annotator *p, Blob *pParent, int iVers, u64 diffFlags){
  int i, j;
  int lnTo;

  /* Prepare the parent file to be diffed */
  p->c.aFrom = break_into_lines(blob_str(pParent), blob_size(pParent),
                                &p->c.nFrom, diffFlags);
  if( p->c.aFrom==0 ){
    return 1;
  }

  /* Compute the differences going from pParent to the file being
  ** annotated. */
  diff_all(&p->c);

  free(p->c.aFrom);

  /* Return no errors */
  return 0;
}


/* Annotation flags (any DIFF flag can be used as Annotation flag as well) */
#define ANN_FILE_VERS   (((u64)0x20)<<32) /* Show file vers rather than commit vers */
#define ANN_FILE_ANCEST (((u64)0x40)<<32) /* Prefer check-ins in the ANCESTOR table */

/*
** Compute a complete annotation on a file.  The file is identified
** by its filename number (filename.fnid) and the baseline in which
** it was checked in (mlink.mid).
*/
static void annotate_file(
  Annotator *p,        /* The annotator */
  int fnid,            /* The name of the file to be annotated */
  int mid,             /* Use the version of the file in this check-in */
  int iLimit,          /* Limit the number of levels if greater than zero */
  u64 annFlags         /* Flags to alter the annotation */
){
  Blob toAnnotate;     /* Text of the final (mid) version of the file */
  Blob step;           /* Text of previous revision */
  int rid;             /* Artifact ID of the file being annotated */
  Stmt q;              /* Query returning all ancestor versions */
  Stmt ins;            /* Inserts into the temporary VSEEN table */
  int cnt = 0;         /* Number of versions examined */

  /* Initialize the annotation */
  rid = db_int(0, "SELECT fid FROM mlink WHERE mid=%d AND fnid=%d",mid,fnid);
  if( rid==0 ){
    fossil_fatal("file #%d is unchanged in manifest #%d", fnid, mid);
  }
  if( !content_get(rid, &toAnnotate) ){
    fossil_fatal("unable to retrieve content of artifact #%d", rid);
  }
  if( iLimit<=0 ) iLimit = 1000000000;
  blob_to_utf8_no_bom(&toAnnotate, 0);
  annotation_start(p, &toAnnotate, annFlags);
  db_begin_transaction();
  db_multi_exec(
     "CREATE TEMP TABLE IF NOT EXISTS vseen(rid INTEGER PRIMARY KEY);"
     "DELETE FROM vseen;"
  );

  db_prepare(&ins, "INSERT OR IGNORE INTO vseen(rid) VALUES(:rid)");

    p->aVers = fossil_realloc(p->aVers, (p->nVers+1)*sizeof(p->aVers[0]));
    p->aVers[p->nVers].zFUuid = fossil_strdup(db_column_text(&q, 0));
    p->aVers[p->nVers].zMUuid = fossil_strdup(db_column_text(&q, 1));
    p->aVers[p->nVers].zDate = fossil_strdup(db_column_text(&q, 2));
    p->aVers[p->nVers].zUser = fossil_strdup(db_column_text(&q, 3));
    if( p->nVers ){
      content_get(rid, &step);
      blob_to_utf8_no_bom(&step, 0);
      annotation_step(p, &step, p->nVers-1, annFlags);
      blob_reset(&step);
    }
    p->nVers++;
    db_bind_int(&ins, ":rid", rid);
    db_step(&ins);
    db_reset(&ins);
    db_reset(&q);

/*
** Return a color from a gradient.
*/
unsigned gradient_color(unsigned c1, unsigned c2, int n, int i){
  unsigned c;   /* Result color */
  unsigned x1, x2;
  if( i==0 || n==0 ) return c1;
  else if(i>=n) return c2;
  x1 = (c1>>16)&0xff;
  x2 = (c2>>16)&0xff;
  c = (x1*(n-i) + x2*i)/n<<16 & 0xff0000;
  x1 = (c1>>8)&0xff;
  x2 = (c2>>8)&0xff;
  c |= (x1*(n-i) + x2*i)/n<<8 & 0xff00;
  x1 = c1&0xff;
  x2 = c2&0xff;
  c |= (x1*(n-i) + x2*i)/n & 0xff;
  return c;
}

/*
** WEBPAGE: annotate
** WEBPAGE: blame
** WEBPAGE: praise
**
** Query parameters:
**
**    checkin=ID          The manifest ID at which to start the annotation
**    filename=FILENAME   The filename.
**    filevers            Show file versions rather than check-in versions
**    log=BOOLEAN         Show a log of versions analyzed
**    limit=N             Limit the search depth to N ancestors
*/
void annotation_page(void){
  int mid;
  int fnid;
  int i;
  int iLimit;            /* Depth limit */
  u64 annFlags = (ANN_FILE_ANCEST|DIFF_STRIP_EOLCR);
  int showLog = 0;       /* True to display the log */
  int ignoreWs = 0;      /* Ignore whitespace */
  const char *zFilename; /* Name of file to annotate */
  const char *zCI;       /* The check-in containing zFilename */
  Annotator ann;
  HQuery url;
  struct AnnVers *p;
  unsigned clr1, clr2, clr;
  int bBlame = g.zPath[0]!='a';/* True for BLAME output.  False for ANNOTATE. */

  /* Gather query parameters */
  showLog = atoi(PD("log","1"));
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(); return; }
  if( exclude_spiders("annotate") ) return;
  load_control();
  mid = name_to_typed_rid(PD("checkin","0"),"ci");
  zFilename = P("filename");
  fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q", zFilename);
  if( mid==0 || fnid==0 ){ fossil_redirect_home(); }
  iLimit = atoi(PD("limit","20"));
  if( P("filevers") ) annFlags |= ANN_FILE_VERS;
  ignoreWs = P("w")!=0;
  if( ignoreWs ) annFlags |= DIFF_IGNORE_ALLWS;
  if( !db_exists("SELECT 1 FROM mlink WHERE mid=%d AND fnid=%d",mid,fnid) ){
    fossil_redirect_home();
  }

  /* compute the annotation */
  compute_direct_ancestors(mid, 10000000);
  annotate_file(&ann, fnid, mid, iLimit, annFlags);
  zCI = ann.aVers[0].zMUuid;

  /* generate the web page */
  style_header("Annotation For %h", zFilename);
  if( bBlame ){
    url_initialize(&url, "blame");
  }else{
    url_initialize(&url, "annotate");
  }
  url_add_parameter(&url, "checkin", P("checkin"));
  url_add_parameter(&url, "filename", zFilename);
  if( iLimit!=20 ){
    url_add_parameter(&url, "limit", sqlite3_mprintf("%d", iLimit));
  }
  url_add_parameter(&url, "log", showLog ? "1" : "0");
  if( ignoreWs ){
    url_add_parameter(&url, "w", "");
    style_submenu_element("Show Whitespace Changes", "Show Whitespace Changes",
        "%s", url_render(&url, "w", 0, 0, 0));
  }else{
    style_submenu_element("Ignore Whitespace", "Ignore Whitespace",
        "%s", url_render(&url, "w", "", 0, 0));
  }
  if( showLog ){
    style_submenu_element("Hide Log", "Hide Log",
       "%s", url_render(&url, "log", "0", 0, 0));
  }else{
    style_submenu_element("Show Log", "Show Log",
       "%s", url_render(&url, "log", "1", 0, 0));
  }

  }else{
    clr1 = 0xffb5b5;  /* Recent changes: red (hot) */
    clr2 = 0xb5e0ff;  /* Older changes: blue (cold) */
  }
  for(p=ann.aVers, i=0; i<ann.nVers; i++, p++){
    clr = gradient_color(clr1, clr2, ann.nVers-1, i);
    ann.aVers[i].zBgColor = mprintf("#%06x", clr);
  }

  if( showLog ){
    char *zLink = href("%R/finfo?name=%t&ci=%s",zFilename,zCI);
    @ <h2>Ancestors of %z(zLink)%h(zFilename)</a> analyzed:</h2>
    @ <ol>
    for(p=ann.aVers, i=0; i<ann.nVers; i++, p++){
      @ <li><span style='background-color:%s(p->zBgColor);'>%s(p->zDate)
      @ check-in %z(href("%R/info/%s",p->zMUuid))%.10s(p->zMUuid)</a>
      @ artifact %z(href("%R/artifact/%s",p->zFUuid))%.10s(p->zFUuid)</a>
      @ </span>
#if 0
      if( i>0 ){
        char *zLink = xhref("target='infowindow'",
                            "%R/fdiff?v1=%S&v2=%S&sbs=1",
                            p->zFUuid,ann.aVers[0].zFUuid);
        @ %z(zLink)[diff-to-top]</a>
        if( i>1 ){
           zLink = xhref("target='infowindow'",
                         "%R/fdiff?v1=%S&v2=%S&sbs=1",
                         p->zFUuid,p[-1].zFUuid);
           @ %z(zLink)[diff-to-previous]</a>
        }
      }
#endif
    }
    @ </ol>
    @ <hr>
  }
  if( !ann.bLimit ){
    @ <h2>Origin for each line in
    @ %z(href("%R/finfo?name=%h&ci=%s", zFilename, zCI))%h(zFilename)</a>
    @ from check-in %z(href("%R/info/%s",zCI))%S(zCI)</a>:</h2>
    iLimit = ann.nVers+10;
  }else{
    @ <h2>Lines added by the %d(iLimit) most recent ancestors of
    @ %z(href("%R/finfo?name=%h&ci=%s", zFilename, zCI))%h(zFilename)</a>
    @ from check-in %z(href("%R/info/%s",zCI))%S(zCI)</a>:</h2>
  }
  @ <pre>
  for(i=0; i<ann.nOrig; i++){
    int iVers = ann.aOrig[i].iVers;
    char *z = (char*)ann.aOrig[i].z;
    int n = ann.aOrig[i].n;
    char zPrefix[300];
    z[n] = 0;
    if( iLimit>ann.nVers && iVers<0 ) iVers = ann.nVers-1;

    if( bBlame ){
      if( iVers>=0 ){
        struct AnnVers *p = ann.aVers+iVers;
        char *zLink = xhref("target='infowindow'", "%R/info/%s", p->zMUuid);
        sqlite3_snprintf(sizeof(zPrefix), zPrefix,
             "<span style='background-color:%s'>"
             "%s%.10s</a> %s</span> %13.13s:",
             p->zBgColor, zLink, p->zMUuid, p->zDate, p->zUser);
        fossil_free(zLink);
      }else{
        sqlite3_snprintf(sizeof(zPrefix), zPrefix, "%36s", "");
      }
    }else{
      if( iVers>=0 ){
        struct AnnVers *p = ann.aVers+iVers;
        char *zLink = xhref("target='infowindow'", "%R/info/%s", p->zMUuid);
        sqlite3_snprintf(sizeof(zPrefix), zPrefix,
             "<span style='background-color:%s'>"
             "%s%.10s</a> %s</span> %4d:",
             p->zBgColor, zLink, p->zMUuid, p->zDate, i+1);
        fossil_free(zLink);
      }else{
        sqlite3_snprintf(sizeof(zPrefix), zPrefix, "%22s%4d:", "", i+1);
      }
    }
    @ %s(zPrefix) %h(z)

  }
  @ </pre>
  style_footer();
}

/*
** COMMAND: annotate
** COMMAND: blame
** COMMAND: praise
**
** %fossil (annotate|blame|praise) ?OPTIONS? FILENAME
**
** Output the text of a file with markings to show when each line of
** the file was last modified.  The "annotate" command shows line numbers
** and omits the username.  The "blame" and "praise" commands show the user
** who made each checkin and omits the line number.
**
** Options:
**   --filevers                 Show file version numbers rather than check-in versions
**   -l|--log                   List all versions analyzed
**   -n|--limit N               Only look backwards in time by N versions
**   -w|--ignore-all-space      Ignore white space when comparing lines
**   -Z|--ignore-trailing-space Ignore whitespace at line end
**
** See also: info, finfo, timeline
*/
void annotate_cmd(void){
  int fnid;         /* Filename ID */
  int fid;          /* File instance ID */
  int mid;          /* Manifest where file was checked in */
  int cid;          /* Checkout ID */
  Blob treename;    /* FILENAME translated to canonical form */
  char *zFilename;  /* Canonical filename */
  Annotator ann;    /* The annotation of the file */
  int i;            /* Loop counter */
  const char *zLimit; /* The value to the -n|--limit option */
  int iLimit;       /* How far back in time to look */
  int showLog;      /* True to show the log */
  int fileVers;     /* Show file version instead of check-in versions */
  u64 annFlags = 0; /* Flags to control annotation properties */
  int bBlame = 0;   /* True for BLAME output.  False for ANNOTATE. */

  bBlame = g.argv[1][0]!='a';
  zLimit = find_option("limit","n",1);
  if( zLimit==0 || zLimit[0]==0 ) zLimit = "-1";
  iLimit = atoi(zLimit);
  showLog = find_option("log","l",0)!=0;
  if( find_option("ignore-trailing-space","Z",0)!=0 ){
    annFlags = DIFF_IGNORE_EOLWS;
  }
  if( find_option("ignore-all-space","w",0)!=0 ){
    annFlags = DIFF_IGNORE_ALLWS; /* stronger than DIFF_IGNORE_EOLWS */
  }
  fileVers = find_option("filevers",0,0)!=0;
  db_must_be_within_tree();
  if( g.argc<3 ) {
    usage("FILENAME");
  }
  file_tree_name(g.argv[2], &treename, 1);
  zFilename = blob_str(&treename);

  mid = db_int(0, "SELECT mlink.mid FROM mlink, ancestor "
          " WHERE mlink.fid=%d AND mlink.fnid=%d AND mlink.mid=ancestor.rid"
          " ORDER BY ancestor.generation ASC LIMIT 1",
          fid, fnid);
  if( mid==0 ){
    fossil_fatal("unable to find manifest");
  }
  annFlags |= (ANN_FILE_ANCEST|DIFF_STRIP_EOLCR);
  annotate_file(&ann, fnid, mid, iLimit, annFlags);
  if( showLog ){
    struct AnnVers *p;
    for(p=ann.aVers, i=0; i<ann.nVers; i++, p++){
      fossil_print("version %3d: %s %.10s file %.10s\n",
                   i+1, p->zDate, p->zMUuid, p->zFUuid);
    }

void diff_print_filenames(const char *zLeft, const char *zRight, u64 diffFlags){
  char *z = 0;
  if( diffFlags & DIFF_BRIEF ){
    /* no-op */
  }else if( diffFlags & DIFF_SIDEBYSIDE ){
    int w = diff_width(diffFlags);
    int n1 = strlen(zLeft);
    int n2 = strlen(zRight);
    int x;
    if( n1==n2 && fossil_strcmp(zLeft,zRight)==0 ){
      if( n1>w*2 ) n1 = w*2;
      x = w*2+17 - (n1+2);
      z = mprintf("%.*c %.*s %.*c\n",
                 x/2, '=', n1, zLeft, (x+1)/2, '=');
    }else{
      if( w<20 ) w = 20;
      if( n1>w-10 ) n1 = w - 10;
      if( n2>w-10 ) n2 = w - 10;
      z = mprintf("%.*c %.*s %.*c versus %.*c %.*s %.*c\n",
                  (w-n1+10)/2, '=', n1, zLeft, (w-n1+1)/2, '=',
                  (w-n2)/2, '=', n2, zRight, (w-n2+1)/2, '=');
    }
  }else{
    z = mprintf("--- %s\n+++ %s\n", zLeft, zRight);
  }
  fossil_print("%s", z);
  fossil_free(z);
}

  }
  return db_get(zName, zDefault);
}

/* A Tcl/Tk script used to render diff output.
*/
static const char zDiffScript[] =
@ set prog {
@ package require Tk
@
@ array set CFG {
@   TITLE      {Fossil Diff}
@   LN_COL_BG  #dddddd
@   LN_COL_FG  #444444
@   TXT_COL_BG #ffffff
@   TXT_COL_FG #000000
@   MKR_COL_BG #444444
@   MKR_COL_FG #dddddd
@   CHNG_BG    #d0d0ff
@   ADD_BG     #c0ffc0
@   RM_BG      #ffc0c0
@   HR_FG      #888888
@   HR_PAD_TOP 4
@   HR_PAD_BTM 8
@   FN_BG      #444444
@   FN_FG      #ffffff
@   FN_PAD     5
@   ERR_FG     #ee0000
@   PADX       5
@   WIDTH      80
@   HEIGHT     45
@   LB_HEIGHT  25
@ }
@
@ if {![namespace exists ttk]} {
@   interp alias {} ::ttk::scrollbar {} ::scrollbar
@   interp alias {} ::ttk::menubutton {} ::menubutton
@ }
@
@ proc dehtml {x} {
@   set x [regsub -all {<[^>]*>} $x {}]
@   return [string map {&amp; & &lt; < &gt; > &#39; ' &quot; \"} $x]
@ }
@
@ proc cols {} {
@   return [list .lnA .txtA .mkr .lnB .txtB]
@ }
@
@ proc colType {c} {
@   regexp {[a-z]+} $c type
@   return $type
@ }
@
@ proc getLine {difftxt N iivar} {
@   upvar $iivar ii
@   if {$ii>=$N} {return -1}
@   set x [lindex $difftxt $ii]
@   incr ii
@   return $x
@ }
@
@ proc readDiffs {fossilcmd} {
@   global difftxt
@   if {![info exists difftxt]} {
@     set in [open $fossilcmd r]
@     fconfigure $in -encoding utf-8
@     set difftxt [split [read $in] \n]
@     close $in
@   }
@   set N [llength $difftxt]
@   set ii 0
@   set nDiffs 0
@   array set widths {txt 0 ln 0 mkr 0}
@   while {[set line [getLine $difftxt $N ii]] != -1} {
@     set fn2 {}
@     if {![regexp {^=+ (.*?) =+ versus =+ (.*?) =+$} $line all fn fn2]
@      && ![regexp {^=+ (.*?) =+$} $line all fn]
@     } {
@       continue
@     }
@     set errMsg ""
@     set line [getLine $difftxt $N ii]
@     if {[string compare -length 6 $line "<table"]
@      && ![regexp {<p[^>]*>(.+)} $line - errMsg]} {
@       continue
@     }
@     incr nDiffs
@     set idx [expr {$nDiffs > 1 ? [.txtA index end] : "1.0"}]
@     .wfiles.lb insert end $fn
@
@     foreach c [cols] {


@       if {$nDiffs > 1} {
@         $c insert end \n -
@       }
@       if {[colType $c] eq "txt"} {
@         $c insert end $fn\n fn
@         if {$fn2!=""} {set fn $fn2}
@       } else {
@         $c insert end \n fn
@       }
@       $c insert end \n -
@
@       if {$errMsg ne ""} continue
@       while {[getLine $difftxt $N ii] ne "<pre>"} continue
@       set type [colType $c]
@       set str {}
@       while {[set line [getLine $difftxt $N ii]] ne "</pre>"} {
@         set len [string length [dehtml $line]]
@         if {$len > $widths($type)} {
@           set widths($type) $len
@         }
@         append str $line\n
@       }
@
@       set re {<span class="diff([a-z]+)">([^<]*)</span>}
@       # Use \r as separator since it can't appear in the diff output (it gets
@       # converted to a space).
@       set str [regsub -all $re $str "\r\\1\r\\2\r"]
@       foreach {pre class mid} [split $str \r] {
@         if {$class ne ""} {
@           $c insert end [dehtml $pre] - [dehtml $mid] [list $class -]
@         } else {
@           $c insert end [dehtml $pre] -
@         }
@       }
@     }
@
@     if {$errMsg ne ""} {
@       foreach c {.txtA .txtB} {$c insert end [string trim $errMsg] err}
@       foreach c [cols] {$c insert end \n -}
@     }
@   }
@
@   foreach c [cols] {
@     set type [colType $c]
@     if {$type ne "txt"} {
@       $c config -width $widths($type)
@     }
@     $c config -state disabled
@   }
@   if {$nDiffs <= [.wfiles.lb cget -height]} {
@     .wfiles.lb config -height $nDiffs
@     grid remove .wfiles.sb
@   }
@
@   return $nDiffs
@ }
@
@ proc viewDiff {idx} {
@   .txtA yview $idx
@   .txtA xview moveto 0
@ }
@
@ proc cycleDiffs {{reverse 0}} {
@   if {$reverse} {
@     set range [.txtA tag prevrange fn @0,0 1.0]
@     if {$range eq ""} {
@       viewDiff {fn.last -1c}
@     } else {
@       viewDiff [lindex $range 0]
@     }
@   } else {
@     set range [.txtA tag nextrange fn {@0,0 +1c} end]
@     if {$range eq "" || [lindex [.txtA yview] 1] == 1} {
@       viewDiff fn.first
@     } else {
@       viewDiff [lindex $range 0]
@     }
@   }
@ }
@
@ proc xvis {col} {
@   set view [$col xview]
@   return [expr {[lindex $view 1]-[lindex $view 0]}]
@ }
@
@ proc scroll-x {args} {
@   set c .txt[expr {[xvis .txtA] < [xvis .txtB] ? "A" : "B"}]
@   eval $c xview $args
@ }
@
@ interp alias {} scroll-y {} .txtA yview
@
@ proc noop {args} {}
@
@ proc enableSync {axis} {
@   update idletasks
@   interp alias {} sync-$axis {}
@   rename _sync-$axis sync-$axis
@ }
@
@ proc disableSync {axis} {
@   rename sync-$axis _sync-$axis
@   interp alias {} sync-$axis {} noop
@ }
@
@ proc sync-x {col first last} {
@   disableSync x
@   $col xview moveto [expr {$first*[xvis $col]/($last-$first)}]
@   foreach side {A B} {
@     set sb .sbx$side
@     set xview [.txt$side xview]
@     if {[lindex $xview 0] > 0 || [lindex $xview 1] < 1} {

@     grid .sby
@     .sby set $first $last
@   } else {
@     grid remove .sby
@   }
@   enableSync y
@ }
@
@ wm withdraw .
@ wm title . $CFG(TITLE)
@ wm iconname . $CFG(TITLE)
@ bind . <q> exit
@ bind . <Destroy> {after 0 exit}
@ bind . <Tab> {cycleDiffs; break}
@ bind . <<PrevWindow>> {cycleDiffs 1; break}
@ bind . <Return> {
@   event generate .bb.files <1>
@   event generate .bb.files <ButtonRelease-1>
@   break
@ }
@ foreach {key axis args} {
@   Up    y {scroll -5 units}
@   Down  y {scroll 5 units}
@   Left  x {scroll -5 units}
@   Right x {scroll 5 units}
@   Prior y {scroll -1 page}
@   Next  y {scroll 1 page}
@   Home  y {moveto 0}
@   End   y {moveto 1}
@ } {
@   bind . <$key> "scroll-$axis $args; break"
@   bind . <Shift-$key> continue
@ }
@
@ frame .bb
@ ::ttk::menubutton .bb.files -text "Files"
@ toplevel .wfiles
@ wm withdraw .wfiles
@ update idletasks
@ wm transient .wfiles .
@ wm overrideredirect .wfiles 1
@ listbox .wfiles.lb -width 0 -height $CFG(LB_HEIGHT) -activestyle none \
@   -yscroll {.wfiles.sb set}
@ ::ttk::scrollbar .wfiles.sb -command {.wfiles.lb yview}
@ grid .wfiles.lb .wfiles.sb -sticky ns
@ bind .bb.files <1> {
@   set x [winfo rootx %W]
@   set y [expr {[winfo rooty %W]+[winfo height %W]}]
@   wm geometry .wfiles +$x+$y
@   wm deiconify .wfiles
@   focus .wfiles.lb
@ }
@ bind .wfiles <FocusOut> {wm withdraw .wfiles}

@     break
@   }
@ }
@ bind .wfiles.lb <Motion> {
@   %W selection clear 0 end
@   %W selection set @%x,%y
@ }
@
@ foreach {side syncCol} {A .txtB B .txtA} {
@   set ln .ln$side
@   text $ln
@   $ln tag config - -justify right
@
@   set txt .txt$side
@   text $txt -width $CFG(WIDTH) -height $CFG(HEIGHT) -wrap none \
@     -xscroll "sync-x $syncCol"
@   catch {$txt config -tabstyle wordprocessor} ;# Required for Tk>=8.5
@   foreach tag {add rm chng} {
@     $txt tag config $tag -background $CFG([string toupper $tag]_BG)
@     $txt tag lower $tag
@   }
@   $txt tag config fn -background $CFG(FN_BG) -foreground $CFG(FN_FG) \
@     -justify center
@   $txt tag config err -foreground $CFG(ERR_FG)
@ }
@ text .mkr
@
@ foreach c [cols] {
@   set keyPrefix [string toupper [colType $c]]_COL_
@   if {[tk windowingsystem] eq "win32"} {$c config -font {courier 9}}
@   $c config -bg $CFG(${keyPrefix}BG) -fg $CFG(${keyPrefix}FG) -borderwidth 0 \
@     -padx $CFG(PADX) -yscroll sync-y
@   $c tag config hr -spacing1 $CFG(HR_PAD_TOP) -spacing3 $CFG(HR_PAD_BTM) \
@      -foreground $CFG(HR_FG)
@   $c tag config fn -spacing1 $CFG(FN_PAD) -spacing3 $CFG(FN_PAD)
@   bindtags $c ". $c Text all"
@   bind $c <1> {focus %W}
@ }
@
@ ::ttk::scrollbar .sby -command {.txtA yview} -orient vertical
@ ::ttk::scrollbar .sbxA -command {.txtA xview} -orient horizontal
@ ::ttk::scrollbar .sbxB -command {.txtB xview} -orient horizontal
@ frame .spacer
@
@ if {[readDiffs $fossilcmd] == 0} {
@   tk_messageBox -type ok -title $CFG(TITLE) -message "No changes"
@   exit
@ }
@ update idletasks
@
@ proc saveDiff {} {
@   set fn [tk_getSaveFile]
@   set out [open $fn wb]
@   puts $out "#!/usr/bin/tclsh\n#\n# Run this script using 'tclsh' or 'wish'"
@   puts $out "# to see the graphical diff.\n#"
@   puts $out "set fossilcmd {}"
@   puts $out "set prog [list $::prog]"
@   puts $out "set difftxt \173"
@   foreach e $::difftxt {puts $out [list $e]}
@   puts $out "\175"
@   puts $out "eval \$prog"
@   close $out
@ }
@ proc invertDiff {} {
@   global CFG
@   array set x [grid info .txtA]
@   if {$x(-column)==1} {
@     grid config .lnB -column 0
@     grid config .txtB -column 1
@     .txtB tag config add -background $CFG(RM_BG)
@     grid config .lnA -column 3
@     grid config .txtA -column 4
@     .txtA tag config rm -background $CFG(ADD_BG)
@   } else {
@     grid config .lnA -column 0
@     grid config .txtA -column 1
@     .txtA tag config rm -background $CFG(RM_BG)
@     grid config .lnB -column 3
@     grid config .txtB -column 4
@     .txtB tag config add -background $CFG(ADD_BG)
@   }
@   .mkr config -state normal
@   set clt [.mkr search -all < 1.0 end]
@   set cgt [.mkr search -all > 1.0 end]
@   foreach c $clt {.mkr replace $c "$c +1 chars" >}
@   foreach c $cgt {.mkr replace $c "$c +1 chars" <}
@   .mkr config -state disabled
@ }
@ ::ttk::button .bb.quit -text {Quit} -command exit
@ ::ttk::button .bb.invert -text {Invert} -command invertDiff
@ ::ttk::button .bb.save -text {Save As...} -command saveDiff
@ pack .bb.quit .bb.invert -side left
@ if {$fossilcmd!=""} {pack .bb.save -side left}
@ pack .bb.files -side left
@ grid rowconfigure . 1 -weight 1
@ grid columnconfigure . 1 -weight 1
@ grid columnconfigure . 4 -weight 1
@ grid .bb -row 0 -columnspan 6
@ eval grid [cols] -row 1 -sticky nsew
@ grid .sby -row 1 -column 5 -sticky ns
@ grid .sbxA -row 2 -columnspan 2 -sticky ew
@ grid .spacer -row 2 -column 2
@ grid .sbxB -row 2 -column 3 -columnspan 2 -sticky ew
@
@ .spacer config -height [winfo height .sbxA]
@ wm deiconify .
@ }
@ eval $prog
;

/*
** Show diff output in a Tcl/Tk window, in response to the --tk option
** to the diff command.
**
** If fossil has direct access to a Tcl interpreter (either loaded
** dynamically through stubs or linked in statically), we can use it
** directly. Otherwise:
** (1) Write the Tcl/Tk script used for rendering into a temp file.
** (2) Invoke "tclsh" on the temp file using fossil_system().
** (3) Delete the temp file.
*/

      ** for testing and debugging. */
      if( strglob("*-script",z) && i<g.argc-1 ){
        i++;
        zTempFile = g.argv[i];
        continue;
      }
    }
    if( sqlite3_strglob("*}*",z) ){
      blob_appendf(&script, " {%/}", z);
    }else{
      int j;
      blob_append(&script, " ", 1);
      for(j=0; z[j]; j++) blob_appendf(&script, "\\%03o", (unsigned char)z[j]);
    }
  }
  blob_appendf(&script, "}\n%s", zDiffScript);
  if( zTempFile ){
    blob_write_to_file(&script, zTempFile);
    fossil_print("To see diff, run: tclsh \"%s\"\n", zTempFile);
  }else{
#if defined(FOSSIL_ENABLE_TCL)

**
** Show the difference between the current version of each of the FILEs
** specified (as they exist on disk) and that same file as it was checked
** out.  Or if the FILE arguments are omitted, show the unsaved changed
** currently in the working check-out.
**
** If the "--from VERSION" or "-r VERSION" option is used it specifies
** the source check-in for the diff operation.  If not specified, the
** source check-in is the base check-in for the current check-out.
**
** If the "--to VERSION" option appears, it specifies the check-in from
** which the second version of the file or files is taken.  If there is
** no "--to" option then the (possibly edited) files in the current check-out
** are used.
**

** when using an external diff program.
**
** The "--binary" option causes files matching the glob PATTERN to be treated
** as binary when considering if they should be used with external diff program.
** This option overrides the "binary-glob" setting.
**
** Options:
**   --binary PATTERN           Treat files that match the glob PATTERN as binary
**   --branch BRANCH            Show diff of all changes on BRANCH
**   --brief                    Show filenames only
**   --context|-c N             Use N lines of context
**   --diff-binary BOOL         Include binary files when using external commands
**   --from|-r VERSION          select VERSION as source for the diff
**   --internal|-i              use internal diff logic
**   --side-by-side|-y          side-by-side diff
**   --strip-trailing-cr        Strip trailing CR
**   --tk                       Launch a Tcl/Tk GUI for display
**   --to VERSION               select VERSION as target for the diff
**   --unified                  unified diff
**   -v|--verbose               output complete text of added or deleted files
**   -w|--ignore-all-space      Ignore white space when comparing lines
**   -W|--width <num>           Width of lines in side-by-side diff
**   -Z|--ignore-trailing-space Ignore changes to end-of-line whitespace
*/
void diff_cmd(void){
  int isGDiff;               /* True for gdiff.  False for normal diff */
  int isInternDiff;          /* True for internal diff */
  int verboseFlag;           /* True if -v or --verbose flag is used */
  const char *zFrom;         /* Source version number */
  const char *zTo;           /* Target version number */

  zBranch = find_option("branch", 0, 1);
  diffFlags = diff_options();
  verboseFlag = find_option("verbose","v",0)!=0;
  if( !verboseFlag ){
    verboseFlag = find_option("new-file","N",0)!=0; /* deprecated */
  }
  if( verboseFlag ) diffFlags |= DIFF_VERBOSE;

  if( zBranch ){
    if( zTo || zFrom ){
      fossil_fatal("cannot use --from or --to with --branch");
    }
    zTo = zBranch;
    zFrom = mprintf("root:%s", zBranch);
  }

    /* Get the file content */
    if( content_get(rid, &filebody)==0 ){
      goto doc_not_found;
    }
    db_end_transaction(0);
  }
  blob_to_utf8_no_bom(&filebody, 0);

  /* The file is now contained in the filebody blob.  Deliver the
  ** file to the user 
  */
  zMime = P("mimetype");
  if( zMime==0 ){
    zMime = mimetype_from_name(zName);

      @ <div>
    }
    blob_init(&comment, pEvent->zComment, -1);
    wiki_convert(&comment, 0, WIKI_INLINE);
    blob_reset(&comment);
    @ </div>
    @ </blockquote><hr />
  }

  wiki_convert(&tail, 0, 0);
  style_footer();
  manifest_destroy(pEvent);
}

/*

    int nEventId = strlen(zEventId);
    if( nEventId!=40 || !validate16(zEventId, 40) ){
      fossil_redirect_home();
      return;
    }
  }
  zTag = mprintf("event-%s", zEventId);
  rid = db_int(0,
    "SELECT rid FROM tagxref"
    " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
    " ORDER BY mtime DESC", zTag
  );
  free(zTag);

  /* Need both check-in and wiki-write or wiki-create privileges in order

      Blob tags, one;
      int i, j;
      Stmt q;
      char *zBlob;

      /* Load the tags string into a blob */
      blob_zero(&tags);
      blob_append(&tags, zTags, -1);

      /* Collapse all sequences of whitespace and "," characters into
      ** a single space character */
      zBlob = blob_str(&tags);
      for(i=j=0; zBlob[i]; i++, j++){
        if( fossil_isspace(zBlob[i]) || zBlob[i]==',' ){
          while( fossil_isspace(zBlob[i+1]) ){ i++; }

      /* Extract the tags in sorted order and make an entry in the
      ** artifact for each. */
      db_prepare(&q, "SELECT x FROM newtags ORDER BY x");
      while( db_step(&q)==SQLITE_ROW ){
        blob_appendf(&event, "T +sym-%F *\n", db_column_text(&q, 0));
      }
      db_finalize(&q);
    }
    if( !login_is_nobody() ){
      blob_appendf(&event, "U %F\n", login_name());
    }
    blob_appendf(&event, "W %d\n%s\n", strlen(zBody), zBody);
    md5sum_blob(&event, &cksum);
    blob_appendf(&event, "Z %b\n", &cksum);
    blob_reset(&cksum);
    nrid = content_put(&event);
    db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);

  @ <tr><th align="right" valign="top">Event&nbsp;Time (UTC):</th>
  @ <td valign="top">
  @   <input type="text" name="t" size="25" value="%h(zETime)" />
  @ </td></tr>

  @ <tr><th align="right" valign="top">Timeline&nbsp;Comment:</th>
  @ <td valign="top">
  @ <textarea name="c" class="eventedit" cols="80"
  @  rows="3" wrap="virtual">%h(zComment)</textarea>
  @ </td></tr>

  @ <tr><th align="right" valign="top">Background&nbsp;Color:</th>
  @ <td valign="top">
  render_color_chooser(0, zClr, 0, "clr", "cclr");
  @ </td></tr>

  @ <tr><th align="right" valign="top">Tags:</th>
  @ <td valign="top">
  @   <input type="text" name="g" size="40" value="%h(zTags)" />
  @ </td></tr>

  @ <tr><th align="right" valign="top">Page&nbsp;Content:</th>
  @ <td valign="top">
  @ <textarea name="w" class="eventedit" cols="80"
  @  rows="%d(n)" wrap="virtual">%h(zBody)</textarea>
  @ </td></tr>

  @ <tr><td colspan="2">
  @ <input type="submit" name="preview" value="Preview Your Changes" />
  @ <input type="submit" name="submit" value="Apply These Changes" />
  @ <input type="submit" name="cancel" value="Cancel" />
  @ </td></tr></table>
  @ </div></form>
  style_footer();
}

*/
void file_copy(const char *zFrom, const char *zTo){
  FILE *in, *out;
  int got;
  char zBuf[8192];
  in = fossil_fopen(zFrom, "rb");
  if( in==0 ) fossil_fatal("cannot open \"%s\" for reading", zFrom);
  file_mkfolder(zTo, 0);
  out = fossil_fopen(zTo, "wb");
  if( out==0 ) fossil_fatal("cannot open \"%s\" for writing", zTo);
  while( (got=fread(zBuf, 1, sizeof(zBuf), in))>0 ){
    fwrite(zBuf, 1, got, out);
  }
  fclose(in);
  fclose(out);
}

/*
** COMMAND: test-file-copy
**
** Usage: %fossil test-file-copy SOURCE DESTINATION
**
** Make a copy of the file at SOURCE into a new name DESTINATION.  Any
** directories in the path leading up to DESTINATION that do not already
** exist are created automatically.
*/
void test_file_copy(void){
  if( g.argc!=4 ){
    fossil_fatal("Usage: %s test-file-copy SOURCE DESTINATION", g.argv[0]);
  }
  file_copy(g.argv[2], g.argv[3]);
}

/*
** Set or clear the execute bit on a file.  Return true if a change
** occurred and false if this routine is a no-op.
*/
int file_wd_setexe(const char *zFilename, int onoff){
  int rc = 0;
#if !defined(_WIN32)

#endif
    fossil_filename_free(zMbcs);
    return rc;
  }
  return 0;
}

/*
** Create the tree of directories in which zFilename belongs, if that sequence
** of directories does not already exist.
*/
void file_mkfolder(const char *zFilename, int forceFlag){
  int i, nName;
  char *zName;

  nName = strlen(zFilename);
  zName = mprintf("%s", zFilename);
  nName = file_simplify_name(zName, nName, 0);
  for(i=1; i<nName; i++){
    if( zName[i]=='/' ){
      zName[i] = 0;
#if defined(_WIN32) || defined(__CYGWIN__)
      /*
      ** On Windows, local path looks like: C:/develop/project/file.txt
      ** The if stops us from trying to create a directory of a drive letter
      ** C: in this example.
      */
      if( !(i==2 && zName[1]==':') ){
#endif
        if( file_mkdir(zName, forceFlag) && file_isdir(zName)!=1 ){
          fossil_fatal_recursive("unable to create directory %s", zName);
          return;
        }
#if defined(_WIN32) || defined(__CYGWIN__)
      }
#endif
      zName[i] = '/';
    }
  }
  free(zName);
}

/*
** Removes the directory named in the argument, if it exists.  The directory
** must be empty and cannot be the current directory or the root directory.
**
** Returns zero upon success.
*/
int file_rmdir(const char *zName){

  *pJ = i-1;
  return 1;
}

/*
** Simplify a filename by
**
**  * Remove extended path prefix on windows and cygwin
**  * Convert all \ into / on windows and cygwin
**  * removing any trailing and duplicate /
**  * removing /./
**  * removing /A/../
**
** Changes are made in-place.  Return the new name length.
** If the slash parameter is non-zero, the trailing slash, if any,
** is retained.
*/
int file_simplify_name(char *z, int n, int slash){
  int i = 1, j;
  if( n<0 ) n = strlen(z);

  /* On windows and cygwin convert all \ characters to /
   * and remove extended path prefix if present */
#if defined(_WIN32) || defined(__CYGWIN__)
  for(j=0; j<n; j++){
    if( z[j]=='\\' ) z[j] = '/';
  }
  if( n>3 && !memcmp(z, "//?/", 4) ){
    if( fossil_strnicmp(z+4,"UNC", 3) ){
      i += 4;
      z[0] = z[4];
    }else{
      i += 6;
      z[0] = '/';
    }
  }
#endif

  /* Removing trailing "/" characters */
  if( !slash ){
    while( n>1 && z[n-1]=='/' ){ n--; }
  }

  /* Remove duplicate '/' characters.  Except, two // at the beginning
  ** of a pathname is allowed since this is important on windows. */
  for(j=1; i<n; i++){
    z[j++] = z[i];
    while( z[i]=='/' && i<n-1 && z[i+1]=='/' ) i++;
  }
  n = j;

  /* Skip over zero or more initial "./" sequences */
  for(i=0; i<n-1 && z[i]=='.' && z[i+1]=='/'; i+=2){}

  char *zLocalRoot;
  Blob full;
  int nFull;
  char *zFull;
  int (*xCmp)(const char*,const char*,int);

  blob_zero(pOut);
  if( !g.localOpen ){
    blob_appendf(pOut, "%s", zOrigName);
    return 1;
  }
  file_canonical_name(g.zLocalRoot, &localRoot, 1);
  nLocalRoot = blob_size(&localRoot);
  zLocalRoot = blob_buffer(&localRoot);
  assert( nLocalRoot>0 && zLocalRoot[nLocalRoot-1]=='/' );
  file_canonical_name(zOrigName, &full, 0);
  nFull = blob_size(&full);
  zFull = blob_buffer(&full);
  if( filenames_are_case_sensitive() ){
    xCmp = fossil_strncmp;
  }else{
    xCmp = fossil_strnicmp;
  }

  /* Special case.  zOrigName refers to g.zLocalRoot directory. */
  if( (nFull==nLocalRoot-1 && xCmp(zLocalRoot, zFull, nFull)==0)
      || (nFull==1 && zFull[0]=='/' && nLocalRoot==1 && zLocalRoot[0]=='/') ){
    blob_append(pOut, ".", 1);
    blob_reset(&localRoot);
    blob_reset(&full);
    return 1;
  }

** Options:
**   --case-sensitive B   Enable or disable case-sensitive filenames.  B is
**                        a boolean: "yes", "no", "true", "false", etc.
*/
void cmd_test_tree_name(void){
  int i;
  Blob x;
  db_find_and_open_repository(0,0);
  blob_zero(&x);
  capture_case_sensitive_option();
  for(i=2; i<g.argc; i++){
    if( file_tree_name(g.argv[i], &x, 1) ){
      fossil_print("%s\n", blob_buffer(&x));
      blob_reset(&x);
    }

    " mlink.pfnid",                                  /* Previous filename */
    timeline_utc(), TAG_BRANCH
  );
  if( firstChngOnly ){
#if 0
    blob_appendf(&sql, ", min(event.mtime)");
#else
    blob_appendf(&sql,
        ", min(CASE (SELECT value FROM tagxref"
                    " WHERE tagtype>0 AND tagid=%d"
                    "   AND tagxref.rid=mlink.mid)"
             " WHEN 'trunk' THEN event.mtime-10000 ELSE event.mtime END)",
    TAG_BRANCH);
#endif
  }

  if( P("showsql")!=0 ){
    @ <p>SQL: %h(blob_str(&sql))</p>
  }
  blob_reset(&sql);
  blob_zero(&title);
  if( baseCheckin ){
    char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", baseCheckin);
    char *zLink = href("%R/info/%s", zUuid);
    blob_appendf(&title, "Ancestors of file ");
    hyperlinked_path(zFilename, &title, zUuid, "tree", "");
    blob_appendf(&title, " from check-in %z%.10s</a>", zLink, zUuid);
    fossil_free(zUuid);
  }else{
    blob_appendf(&title, "History of files named ");
    hyperlinked_path(zFilename, &title, 0, "tree", "");

    const char *zCkin = db_column_text(&q,7);
    const char *zBgClr = db_column_text(&q, 8);
    const char *zBr = db_column_text(&q, 9);
    int fmid = db_column_int(&q, 10);
    int pfnid = db_column_int(&q, 11);
    int gidx;
    char zTime[10];


    if( zBr==0 ) zBr = "trunk";
    if( uBg ){
      zBgClr = hash_color(zUser);
    }else if( brBg || zBgClr==0 || zBgClr[0]==0 ){
      zBgClr = strcmp(zBr,"trunk")==0 ? "" : hash_color(zBr);
    }
    gidx = graph_add_row(pGraph, frid, fpid>0 ? 1 : 0, &fpid, zBr, zBgClr,

    @ %z(href("%R/timeline?c=%t",zDate))%s(zTime)</a></td>
    @ <td class="timelineGraph"><div id="m%d(gidx)"></div></td>
    if( zBgClr && zBgClr[0] ){
      @ <td class="timelineTableCell" style="background-color: %h(zBgClr);">
    }else{
      @ <td class="timelineTableCell">
    }


    if( zUuid ){
      if( fpid==0 ){
        @ <b>Added</b>
      }else if( pfnid ){
        char *zPrevName = db_text(0, "SELECT name FROM filename WHERE fnid=%d",
                                  pfnid);
        @ <b>Renamed</b> from

        @ <b>Renamed</b> to
        @ %z(href("%R/finfo?name=%t",zNewName))%h(zNewName)</a> by check-in
        fossil_free(zNewName);
      }else{
        @ <b>Deleted</b> by check-in
      }
    }
    hyperlink_to_uuid(zCkin);
    @ %w(zCom) (user:
    hyperlink_to_user(zUser, zDate, "");
    @ branch: %h(zBr))
    if( g.perm.Hyperlink && zUuid ){
      const char *z = zFilename;
      @ %z(href("%R/annotate?filename=%h&checkin=%s",z,zCkin))
      @ [annotate]</a>
      @ %z(href("%R/blame?filename=%h&checkin=%s",z,zCkin))
      @ [blame]</a>
      @ %z(href("%R/timeline?n=200&uf=%s",zUuid))[checkins&nbsp;using]</a>
      if( fpid ){
        @ %z(href("%R/fdiff?sbs=1&v1=%s&v2=%s",zPUuid,zUuid))[diff]</a>
      }
    }
    if( fDebug & FINFO_DEBUG_MLINK ){
      int srcid = db_int(0, "SELECT srcid FROM delta WHERE rid=%d", frid);
      int sz = db_int(0, "SELECT length(content) FROM blob WHERE rid=%d", frid);
      @ <br>fid=%d(frid) pid=%d(fpid) mid=%d(fmid) sz=%d(sz)
      if( srcid ){

**
**     [...]      Matches one character from the enclosed list of
**                characters.
**
**     [^...]     Matches one character not in the enclosed list.
*/
int strglob(const char *zGlob, const char *z){










  return sqlite3_strglob(zGlob, z)==0;


















































}

/*
** Return true (non-zero) if zString matches any of the patterns in
** the Glob.  The value returned is actually a 1-based index of the pattern
** that matched.  Return 0 if none of the patterns match zString.
**
** A NULL glob matches nothing.
*/
int glob_match(Glob *pGlob, const char *zString){
  int i;
  if( pGlob==0 ) return 0;
  for(i=0; i<pGlob->nPattern; i++){
    if( sqlite3_strglob(pGlob->azPattern[i], zString)==0 ) return i+1;
  }
  return 0;
}

/*
** Free all memory associated with the given Glob object
*/

/*
** Add nIn bytes of content from pIn to the gzip file.
*/
#define GZIP_BUFSZ 100000
void gzip_step(const char *pIn, int nIn){
  char *zOutBuf;
  int nOut;

  nOut = nIn + nIn/10 + 100;
  if( nOut<100000 ) nOut = 100000;
  zOutBuf = fossil_malloc(nOut);
  gzip.stream.avail_in = nIn;
  gzip.stream.next_in = (unsigned char*)pIn;
  gzip.stream.avail_out = nOut;
  gzip.stream.next_out = (unsigned char*)zOutBuf;

**
** This file contains code that implements the client-side HTTP protocol
*/
#include "config.h"
#include "http.h"
#include <assert.h>

#ifdef _WIN32
#include <io.h>
#ifndef isatty
#define isatty(d) _isatty(d)
#endif
#ifndef fileno
#define fileno(s) _fileno(s)
#endif
#endif

/* Maximum number of HTTP Authorization attempts */
#define MAX_HTTP_AUTH 2

/* Keep track of HTTP Basic Authorization failures */
static int fSeenHttpAuth = 0;

/*
** Construct the "login" card with the client credentials.
**
**       login LOGIN NONCE SIGNATURE
**
** The LOGIN is the user id of the client.  NONCE is the sha1 checksum
** of all payload that follows the login card.  SIGNATURE is the sha1
** checksum of the nonce followed by the user password.
**
** Write the constructed login card into pLogin.  pLogin is initialized
** by this routine.
*/
static void http_build_login_card(Blob *pPayload, Blob *pLogin){
  Blob nonce;          /* The nonce */
  const char *zLogin;  /* The user login name */
  const char *zPw;     /* The user password */
  Blob pw;             /* The nonce with user password appended */
  Blob sig;            /* The signature field */

  blob_zero(pLogin);
  if( g.url.user==0 || fossil_strcmp(g.url.user, "anonymous")==0 ){
     return;  /* If no login card for users "nobody" and "anonymous" */
  }
  if( g.url.isSsh ){
     return;  /* If no login card for SSH: */
  }
  blob_zero(&nonce);
  blob_zero(&pw);
  sha1sum_blob(pPayload, &nonce);
  blob_copy(&pw, &nonce);
  zLogin = g.url.user;
  if( g.url.passwd ){
    zPw = g.url.passwd;
  }else if( g.cgiOutput ){
    /* Password failure while doing a sync from the web interface */
    cgi_printf("*** incorrect or missing password for user %h\n", zLogin);
    zPw = 0;
  }else{
    /* Password failure while doing a sync from the command-line interface */
    url_prompt_for_password();
    zPw = g.url.passwd;
  }







  /* The login card wants the SHA1 hash of the password, so convert the
  ** password to its SHA1 hash it it isn't already a SHA1 hash.
  */
  /* fossil_print("\nzPw=[%s]\n", zPw); // TESTING ONLY */
  if( zPw && zPw[0] ) zPw = sha1_shared_secret(zPw, zLogin, 0);

** the complete payload (including the login card) already compressed.
*/
static void http_build_header(Blob *pPayload, Blob *pHdr){
  int i;
  const char *zSep;

  blob_zero(pHdr);
  i = strlen(g.url.path);
  if( i>0 && g.url.path[i-1]=='/' ){
    zSep = "";
  }else{
    zSep = "/";
  }
  blob_appendf(pHdr, "POST %s%sxfer/xfer HTTP/1.0\r\n", g.url.path, zSep);
  if( g.url.proxyAuth ){
    blob_appendf(pHdr, "Proxy-Authorization: %s\r\n", g.url.proxyAuth);
  }
  if( g.zHttpAuth && g.zHttpAuth[0] ){
    const char *zCredentials = g.zHttpAuth;
    char *zEncoded = encode64(zCredentials, -1);
    blob_appendf(pHdr, "Authorization: Basic %s\r\n", zEncoded);
    fossil_free(zEncoded);

  }
  blob_appendf(pHdr, "Host: %s\r\n", g.url.hostname);
  blob_appendf(pHdr, "User-Agent: %s\r\n", get_user_agent());
  if( g.url.isSsh ) blob_appendf(pHdr, "X-Fossil-Transport: SSH\r\n");
  if( g.fHttpTrace ){
    blob_appendf(pHdr, "Content-Type: application/x-fossil-debug\r\n");
  }else{
    blob_appendf(pHdr, "Content-Type: application/x-fossil\r\n");
  }
  blob_appendf(pHdr, "Content-Length: %d\r\n\r\n", blob_size(pPayload));
}

/*
** Use Fossil credentials for HTTP Basic Authorization prompt
*/
static int use_fossil_creds_for_httpauth_prompt(void){
  Blob x;
  char c;
  prompt_user("Use Fossil username and password (y/N)? ", &x);
  c = blob_str(&x)[0];
  blob_reset(&x);
  return ( c=='y' || c=='Y' );
}

/*
** Prompt to save HTTP Basic Authorization information
*/
static int save_httpauth_prompt(void){
  Blob x;
  char c;
  if( (g.url.flags & URL_REMEMBER)==0 ) return 0;
  prompt_user("Remember Basic Authorization credentials (Y/n)? ", &x);
  c = blob_str(&x)[0];
  blob_reset(&x);
  return ( c!='n' && c!='N' );
}

/*
** Get the HTTP Basic Authorization credentials from the user 
** when 401 is received.
*/
char *prompt_for_httpauth_creds(void){
  Blob x;
  char *zUser;
  char *zPw;
  char *zPrompt;
  char *zHttpAuth = 0;
  if( !isatty(fileno(stdin)) ) return 0;
  zPrompt = mprintf("\n%s authorization required by\n%s\n",
    g.url.isHttps==1 ? "Encrypted HTTPS" : "Unencrypted HTTP", g.url.canonical);
  fossil_print(zPrompt);
  free(zPrompt);
  if ( g.url.user && g.url.passwd && use_fossil_creds_for_httpauth_prompt() ){
    zHttpAuth = mprintf("%s:%s", g.url.user, g.url.passwd);
  }else{
    prompt_user("Basic Authorization user: ", &x);
    zUser = mprintf("%b", &x);
    zPrompt = mprintf("HTTP password for %b: ", &x);
    blob_reset(&x);
    prompt_for_password(zPrompt, &x, 1);
    zPw = mprintf("%b", &x);
    zHttpAuth = mprintf("%s:%s", zUser, zPw);
    free(zUser);
    free(zPw);
    free(zPrompt);
    blob_reset(&x);
  }
  if( save_httpauth_prompt() ){
    set_httpauth(zHttpAuth);
  }
  return zHttpAuth;
}

/*
** Sign the content in pSend, compress it, and send it to the server
** via HTTP or HTTPS.  Get a reply, uncompress the reply, and store the reply
** in pRecv.  pRecv is assumed to be uninitialized when
** this routine is called - this routine will initialize it.
**
** The server address is contain in the "g" global structure.  The

  int rc = 0;           /* Result code */
  int iHttpVersion;     /* Which version of HTTP protocol server uses */
  char *zLine;          /* A single line of the reply header */
  int i;                /* Loop counter */
  int isError = 0;      /* True if the reply is an error message */
  int isCompressed = 1; /* True if the reply is compressed */

  if( transport_open(&g.url) ){
    fossil_warning(transport_errmsg(&g.url));
    return 1;
  }

  /* Construct the login card and prepare the complete payload */
  blob_zero(&login);
  if( useLogin ) http_build_login_card(pSend, &login);
  if( g.fHttpTrace ){

    transport_log(out);
    free(zOutFile);
  }

  /*
  ** Send the request to the server.
  */
  transport_send(&g.url, &hdr);
  transport_send(&g.url, &payload);
  blob_reset(&hdr);
  blob_reset(&payload);
  transport_flip(&g.url);
  
  /*
  ** Read and interpret the server reply
  */
  closeConnection = 1;
  iLength = -1;
  while( (zLine = transport_receive_line(&g.url))!=0 && zLine[0]!=0 ){
    /* printf("[%s]\n", zLine); fflush(stdout); */
    if( fossil_strnicmp(zLine, "http/1.", 7)==0 ){
      if( sscanf(zLine, "HTTP/1.%d %d", &iHttpVersion, &rc)!=2 ) goto write_err;
      if( rc==401 ){
        if( fSeenHttpAuth++ < MAX_HTTP_AUTH ){
          if( g.zHttpAuth ){
            if( g.zHttpAuth ) free(g.zHttpAuth);
          }
          g.zHttpAuth = prompt_for_httpauth_creds();
          transport_close(&g.url);
          return http_exchange(pSend, pReply, useLogin, maxRedirect);
        }
      }
      if( rc!=200 && rc!=302 ){
        int ii;
        for(ii=7; zLine[ii] && zLine[ii]!=' '; ii++){}
        while( zLine[ii]==' ' ) ii++;
        fossil_warning("server says: %s", &zLine[ii]);
        goto write_err;
      }
      if( iHttpVersion==0 ){
        closeConnection = 1;
      }else{
        closeConnection = 0;
      }
    }else if( g.url.isSsh && fossil_strnicmp(zLine, "status:", 7)==0 ){
      if( sscanf(zLine, "Status: %d", &rc)!=1 ) goto write_err;
      if( rc!=200 && rc!=302 ){
        int ii;
        for(ii=7; zLine[ii] && zLine[ii]!=' '; ii++){}
        while( zLine[ii]==' ' ) ii++;
        fossil_warning("server says: %s", &zLine[ii]);
        goto write_err;

      j = strlen(zLine) - 1; 
      while( j>4 && fossil_strcmp(&zLine[j-4],"/xfer")==0 ){
         j -= 4;
         zLine[j] = 0;
      }
      fossil_print("redirect to %s\n", &zLine[i]);
      url_parse(&zLine[i], 0);
      fSeenHttpAuth = 0;
      if( g.zHttpAuth ) free(g.zHttpAuth);
      g.zHttpAuth = get_httpauth();
      transport_close(&g.url);
      return http_exchange(pSend, pReply, useLogin, maxRedirect);
    }else if( fossil_strnicmp(zLine, "content-type: ", 14)==0 ){
      if( fossil_strnicmp(&zLine[14], "application/x-fossil-debug", -1)==0 ){
        isCompressed = 0;
      }else if( fossil_strnicmp(&zLine[14], 
                          "application/x-fossil-uncompressed", -1)==0 ){
        isCompressed = 0;

  }

  /*
  ** Extract the reply payload that follows the header
  */
  blob_zero(pReply);
  blob_resize(pReply, iLength);
  iLength = transport_receive(&g.url, blob_buffer(pReply), iLength);
  blob_resize(pReply, iLength);
  if( isError ){
    char *z;
    int i, j;
    z = blob_str(pReply);
    for(i=j=0; z[i]; i++, j++){
      if( z[i]=='<' ){

  **
  ** FIXME:  There is some bug in the lower layers that prevents the
  ** connection from remaining open.  The easiest fix for now is to
  ** simply close and restart the connection for each round-trip.
  **
  ** For SSH we will leave the connection open.
  */
  if( ! g.url.isSsh ) closeConnection = 1; /* FIX ME */
  if( closeConnection ){
    transport_close(&g.url);
  }else{
    transport_rewind(&g.url);
  }
  return 0;

  /* 
  ** Jump to here if an error is seen.
  */
write_err:
  transport_close(&g.url);
  return 1;  
}

#endif
    iSocket = -1;
  }
}

/*
** Open a socket connection.  The identify of the server is determined
** by pUrlData
**
**    pUrlDAta->name       Name of the server.  Ex: www.fossil-scm.org
**    pUrlDAta->port       TCP/IP port to use.  Ex: 80
**
** Return the number of errors.
*/
int socket_open(UrlData *pUrlData){
  static struct sockaddr_in addr;  /* The server address */
  static int addrIsInit = 0;       /* True once addr is initialized */

    N -= (size_t)got;
    pContent = (void*)&((char*)pContent)[got];
  }
  return total;
}

/*
** Attempt to resolve pUrlData->name to an IP address and setup g.zIpAddr
** so rcvfrom gets populated. For hostnames with more than one IP (or
** if overridden in ~/.ssh/config) the rcvfrom may not match the host
** to which we connect.
*/
void socket_ssh_resolve_addr(UrlData *pUrlData){
  struct hostent *pHost;        /* Used to make best effort for rcvfrom */
  struct sockaddr_in addr;

  memset(&addr, 0, sizeof(addr));
  pHost = gethostbyname(pUrlData->name);
  if( pHost!=0 ){
    memcpy(&addr.sin_addr,pHost->h_addr_list[0],pHost->h_length);
    g.zIpAddr = mprintf("%s", inet_ntoa(addr.sin_addr));
  }
}

void ssl_close(void){
  if( iBio!=NULL ){
    (void)BIO_reset(iBio);
    BIO_free_all(iBio);
  }
}

/* See RFC2817 for details */
static int establish_proxy_tunnel(UrlData *pUrlData, BIO *bio){
  int rc, httpVerMin;
  char *bbuf;
  Blob snd, reply;
  int done=0,end=0;
  blob_zero(&snd);
  blob_appendf(&snd, "CONNECT %s:%d HTTP/1.1\r\n", pUrlData->hostname,
      pUrlData->proxyOrigPort);
  blob_appendf(&snd, "Host: %s:%d\r\n", pUrlData->hostname, pUrlData->proxyOrigPort);
  if( pUrlData->proxyAuth ){
    blob_appendf(&snd, "Proxy-Authorization: %s\r\n", pUrlData->proxyAuth);
  }
  blob_append(&snd, "Proxy-Connection: keep-alive\r\n", -1);
  blob_appendf(&snd, "User-Agent: %s\r\n", get_user_agent());
  blob_append(&snd, "\r\n", 2);
  BIO_write(bio, blob_buffer(&snd), blob_size(&snd));
  blob_reset(&snd);

  /* Wait for end of reply */
  blob_zero(&reply);
  do{
    int len;
    char buf[256];
    len = BIO_read(bio, buf, sizeof(buf));
    blob_append(&reply, buf, len);

    bbuf = blob_buffer(&reply);
    len = blob_size(&reply);
    while(end < len) {
      if(bbuf[end] == '\r') {
        if(len - end < 4) {
          /* need more data */
          break;
        }
        if(memcmp(&bbuf[end], "\r\n\r\n", 4) == 0) {
          done = 1;
          break;
        }
      }
      end++;
    }
  }while(!done);
  sscanf(bbuf, "HTTP/1.%d %d", &httpVerMin, &rc);
  blob_reset(&reply);
  return rc;
}

/*
** Open an SSL connection.  The identify of the server is determined
** as follows:

**
**    g.url.name      Name of the server.  Ex: www.fossil-scm.org
**    pUrlData->port  TCP/IP port to use.  Ex: 80
**
** Return the number of errors.
*/
int ssl_open(UrlData *pUrlData){
  X509 *cert;
  int hasSavedCertificate = 0;
  int trusted = 0;

  cert = ssl_get_certificate(pUrlData, &trusted);
  if ( cert!=NULL ){
    X509_STORE_add_cert(SSL_CTX_get_cert_store(sslCtx), cert);
    X509_free(cert);
    hasSavedCertificate = 1;
  }

  if( pUrlData->useProxy ){
    int rc;
    BIO *sBio;
    char *connStr;
    connStr = mprintf("%s:%d", g.url.name, pUrlData->port);
    sBio = BIO_new_connect(connStr);
    free(connStr);
    if( BIO_do_connect(sBio)<=0 ){
      ssl_set_errmsg("SSL: cannot connect to proxy %s:%d (%s)",
            pUrlData->name, pUrlData->port, ERR_reason_error_string(ERR_get_error()));
      ssl_close();
      return 1;
    }
    rc = establish_proxy_tunnel(pUrlData, sBio);
    if( rc<200||rc>299 ){
      ssl_set_errmsg("SSL: proxy connect failed with HTTP status code %d", rc);
      return 1;
    }

    pUrlData->path = pUrlData->proxyUrlPath;

    iBio = BIO_new_ssl(sslCtx, 1);
    BIO_push(iBio, sBio);
  }else{
    iBio = BIO_new_ssl_connect(sslCtx);
  }
  if( iBio==NULL ) {
    ssl_set_errmsg("SSL: cannot open SSL (%s)", 
                    ERR_reason_error_string(ERR_get_error()));
    return 1;
  }
  BIO_get_ssl(iBio, &ssl);

#if (SSLEAY_VERSION_NUMBER >= 0x00908070) && !defined(OPENSSL_NO_TLSEXT)
  if( !SSL_set_tlsext_host_name(ssl, (pUrlData->useProxy?pUrlData->hostname:pUrlData->name)) ){
    fossil_warning("WARNING: failed to set server name indication (SNI), "
                  "continuing without it.\n");
  }
#endif

  SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);





  if( !pUrlData->useProxy ){
    BIO_set_conn_hostname(iBio, pUrlData->name);
    BIO_set_conn_int_port(iBio, &pUrlData->port);

    if( BIO_do_connect(iBio)<=0 ){
      ssl_set_errmsg("SSL: cannot connect to host %s:%d (%s)", 
          pUrlData->name, pUrlData->port, ERR_reason_error_string(ERR_get_error()));

      ssl_close();
      return 1;
    }
  }
  
  if( BIO_do_handshake(iBio)<=0 ) {
    ssl_set_errmsg("Error establishing SSL connection %s:%d (%s)", 
        pUrlData->useProxy?pUrlData->hostname:pUrlData->name,
        pUrlData->useProxy?pUrlData->proxyOrigPort:pUrlData->port,
        ERR_reason_error_string(ERR_get_error()));
    ssl_close();
    return 1;
  }
  /* Check if certificate is valid */
  cert = SSL_get_peer_certificate(ssl);

        "SHA1 fingerprint above\n"
        " * use the global ssl-ca-location setting to specify your CA root\n"
        "   certificates list\n\n"
        "If you are not expecting this message, answer no and "
        "contact your server\nadministrator.\n\n"
        "Accept certificate for host %s (a=always/y/N)? ",
        X509_verify_cert_error_string(e), desc, warning,
        pUrlData->useProxy?pUrlData->hostname:pUrlData->name);
    BIO_free(mem);

    prompt_user(prompt, &ans);
    free(prompt);
    cReply = blob_str(&ans)[0];
    blob_reset(&ans);
    if( cReply!='y' && cReply!='Y' && cReply!='a' && cReply!='A') {

  BIO *mem;
  char *zCert, *zHost;

  mem = BIO_new(BIO_s_mem());
  PEM_write_bio_X509(mem, cert);
  BIO_write(mem, "", 1); /* nul-terminate mem buffer */
  BIO_get_mem_data(mem, &zCert);
  zHost = mprintf("cert:%s", pUrlData->useProxy?pUrlData->hostname:pUrlData->name);
  db_set(zHost, zCert, 1);
  free(zHost);
  zHost = mprintf("trusted:%s", pUrlData->useProxy?pUrlData->hostname:pUrlData->name);
  db_set_int(zHost, trusted, 1);
  free(zHost);
  BIO_free(mem);  
}

/*
** Get certificate for pUrlData->urlName from global config.
** Return NULL if no certificate found.
*/
X509 *ssl_get_certificate(UrlData *pUrlData, int *pTrusted){
  char *zHost, *zCert;
  BIO *mem;
  X509 *cert;

  zHost = mprintf("cert:%s",
      pUrlData->useProxy ? pUrlData->hostname : pUrlData->name);
  zCert = db_get(zHost, NULL);
  free(zHost);
  if ( zCert==NULL )
    return NULL;

  if ( pTrusted!=0 ){
    zHost = mprintf("trusted:%s",
             pUrlData->useProxy ? pUrlData->hostname : pUrlData->name);
    *pTrusted = db_get_int(zHost, 0);
    free(zHost);
  }

  mem = BIO_new(BIO_s_mem());
  BIO_puts(mem, zCert);
  cert = PEM_read_bio_X509(mem, NULL, 0, NULL);

  }
  blob_reset(&zCmd);
  return sshPid==0;
}

/*
** Open a connection to the server.  The server is defined by the following
** variables:
**
**   pUrlData->name        Name of the server.  Ex: www.fossil-scm.org
**   pUrlData->port        TCP/IP port.  Ex: 80
**   pUrlData->isHttps     Use TLS for the connection
**
** Return the number of errors.
*/
int transport_open(UrlData *pUrlData){
  int rc = 0;
  if( transport.isOpen==0 ){
    if( pUrlData->isSsh ){

    if( memcmp(zLine, "mark ", 5)==0 ){
      trim_newline(&zLine[5]);
      fossil_free(gg.zMark);
      gg.zMark = fossil_strdup(&zLine[5]);
    }else
    if( memcmp(zLine, "tagger ", 7)==0 || memcmp(zLine, "committer ",10)==0 ){
      sqlite3_int64 secSince1970;
      int hastz;
      char tzdir;
      int tz;
      for(i=0; zLine[i] && zLine[i]!='<'; i++){}
      if( zLine[i]==0 ) goto malformed_line;
      z = &zLine[i+1];
      for(i=i+1; zLine[i] && zLine[i]!='>'; i++){}
      if( zLine[i]==0 ) goto malformed_line;
      zLine[i] = 0;
      fossil_free(gg.zUser);
      gg.zUser = fossil_strdup(z);
      secSince1970 = 0;

      /* We don't use sscanf here because of int64 portability issues. */
      for(i=i+2; fossil_isdigit(zLine[i]); i++){
        secSince1970 = secSince1970*10 + zLine[i] - '0';
      }

      /* Read in optional timezone modifier (we don't know if it's strictly
       * optional, but better to be sure). */
      tzdir = '+';
      tz = 0;
      hastz = sscanf(&zLine[i], " %c%d", &tzdir, &tz);
      if ((hastz == 1) || (hastz > 2)) goto malformed_line;
      secSince1970 += ((tzdir == '-') ? -1 : 1) *
        ((tz/100)*3600 + (tz%100)*60);

      fossil_free(gg.zDate);
      gg.zDate = db_text(0, "SELECT datetime(%lld, 'unixepoch')", secSince1970);
      gg.zDate[10] = 'T';
    }else
    if( memcmp(zLine, "from ", 5)==0 ){
      trim_newline(&zLine[5]);
      fossil_free(gg.zFromMark);

        db_column_int(&q, 1)
      );
      fossil_print("%-13s %s %s\n", zType, zUuid, zDate);
      free(zDate);
    }
    db_finalize(&q);
  }
  if( zUuid ){
    fossil_print("%-13s ", "leaf:");
    if(is_a_leaf(rid)){
      if(db_int(0, "SELECT 1 FROM tagxref AS tx"
                " WHERE tx.rid=%d"
                " AND tx.tagid=%d"
                " AND tx.tagtype>0",
                rid, TAG_CLOSED)){
        fossil_print("%s\n", "closed");
      }else{
        fossil_print("%s\n", "open");
      }
    }else{
      fossil_print("no\n");
    }
  }
  zTags = info_tags_of_checkin(rid, 0);
  if( zTags && zTags[0] ){
    fossil_print("tags:         %s\n", zTags);
  }
  free(zTags);
  if( zComment ){
    fossil_print("comment:      ");

      @ <p>Added %z(href("%R/finfo?name=%T",zName))%h(zName)</a>
      @ version %z(href("%R/artifact/%s",zNew))[%S(zNew)]</a>
    }
    if( diffFlags ){
      append_diff(zOld, zNew, diffFlags, pRe);
    }else if( zOld && zNew && fossil_strcmp(zOld,zNew)!=0 ){
      @ &nbsp;&nbsp;
      @ %z(href("%R/fdiff?v1=%s&v2=%s&sbs=1",zOld,zNew))[diff]</a>
    }
  }
}

/*
** Generate javascript to enhance HTML diffs.
*/

}

/*
** Construct an appropriate diffFlag for text_diff() based on query
** parameters and the to boolean arguments.
*/
u64 construct_diff_flags(int verboseFlag, int sideBySide){
  u64 diffFlags = 0;  /* Zero means do not show any diff */
  if( verboseFlag!=0 ){


    int x;
    if( sideBySide ){
      diffFlags = DIFF_SIDEBYSIDE;

      /* "dw" query parameter determines width of each column */
      x = atoi(PD("dw","80"))*(DIFF_CONTEXT_MASK+1);
      if( x<0 || x>DIFF_WIDTH_MASK ) x = DIFF_WIDTH_MASK;
      diffFlags += x;
    }


    if( P("w") ){
      diffFlags |= DIFF_IGNORE_ALLWS;
    }
    /* "dc" query parameter determines lines of context */
    x = atoi(PD("dc","7"));
    if( x<0 || x>DIFF_CONTEXT_MASK ) x = DIFF_CONTEXT_MASK;
    diffFlags += x;

    /* The "noopt" parameter disables diff optimization */
    if( PD("noopt",0)!=0 ) diffFlags |= DIFF_NOOPT;
    diffFlags |= DIFF_STRIP_EOLCR;
  }
  return diffFlags;
}


/*
** WEBPAGE: vinfo
** WEBPAGE: ci
** URL:  /ci?name=RID|ARTIFACTID
**
** Display information about a particular check-in.

  int sideBySide;      /* True for side-by-side diffs */
  u64 diffFlags;       /* Flag parameter for text_diff() */
  const char *zName;   /* Name of the checkin to be displayed */
  const char *zUuid;   /* UUID of zName */
  const char *zParent; /* UUID of the parent checkin (if any) */
  const char *zRe;     /* regex parameter */
  ReCompiled *pRe = 0; /* regex */
  const char *zW;      /* URL param for ignoring whitespace */
  const char *zPage = "vinfo";  /* Page that shows diffs */
  const char *zPageHide = "ci"; /* Page that hides diffs */

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(); return; }
  zName = P("name");
  rid = name_to_rid_www("name");
  if( rid==0 ){
    style_header("Check-in Information Error");

      zPJ = blob_str(&projName);
      for(jj=0; zPJ[jj]; jj++){
        if( (zPJ[jj]>0 && zPJ[jj]<' ') || strchr("\"*/:<>?\\|", zPJ[jj]) ){
          zPJ[jj] = '_';
        }
      }
      @ <tr><th>Timelines:</th><td>
      @   %z(href("%R/timeline?f=%s&unhide",zUuid))family</a>
      if( zParent ){
        @ | %z(href("%R/timeline?p=%s&unhide",zUuid))ancestors</a>
      }
      if( !isLeaf ){
        @ | %z(href("%R/timeline?d=%s&unhide",zUuid))descendants</a>
      }
      if( zParent && !isLeaf ){
        @ | %z(href("%R/timeline?dp=%s&unhide",zUuid))both</a>
      }
      db_prepare(&q2,"SELECT substr(tag.tagname,5) FROM tagxref, tag "
                     " WHERE rid=%d AND tagtype>0 "
                     "   AND tag.tagid=tagxref.tagid "
                     "   AND +tag.tagname GLOB 'sym-*'", rid);
      while( db_step(&q2)==SQLITE_ROW ){
        const char *zTagName = db_column_text(&q2, 0);

        @ | %z(href("%R/zip/%t-%S.zip?uuid=%s",zPJ,zUuid,zUuid))
        @         ZIP archive</a>
        fossil_free(zUrl);
      }
      @ </td></tr>
      @ <tr><th>Other&nbsp;Links:</th>
      @   <td>
      @     %z(href("%R/tree?ci=%s",zUuid))files</a>
      @   | %z(href("%R/fileage?name=%s",zUuid))file ages</a>
      @   | %z(href("%R/tree?ci=%s&nofiles",zUuid))folders</a>
      @   | %z(href("%R/artifact/%s",zUuid))manifest</a>
      if( g.perm.Write ){
        @   | %z(href("%R/ci_edit?r=%s",zUuid))edit</a>
      }
      @   </td>
      @ </tr>
      blob_reset(&projName);
    }
    @ </table>
  }else{
    style_header("Check-in Information");
    login_anonymous_available();
  }
  db_finalize(&q1);
  showTags(rid, "");
  @ <div class="section">Changes</div>
  @ <div class="sectionmenu">
  verboseFlag = g.zPath[0]!='c';
  if( db_get_boolean("show-version-diffs", 0)==0 ){
    verboseFlag = !verboseFlag;
    zPage = "ci";
    zPageHide = "vinfo";
  }
  diffFlags = construct_diff_flags(verboseFlag, sideBySide);
  zW = (diffFlags&DIFF_IGNORE_ALLWS)?"&w":"";
  if( verboseFlag ){
    @ %z(xhref("class='button'","%R/%s/%T",zPageHide,zName))
    @ Hide&nbsp;Diffs</a>
    if( sideBySide ){
      @ %z(xhref("class='button'","%R/%s/%T?sbs=0%s",zPage,zName,zW))
      @ Unified&nbsp;Diffs</a>
    }else{
      @ %z(xhref("class='button'","%R/%s/%T?sbs=1%s",zPage,zName,zW))
      @ Side-by-Side&nbsp;Diffs</a>
    }
    if( *zW ){
      @ %z(xhref("class='button'","%R/%s/%T?sbs=%d",zPage,zName,sideBySide))
      @ Show&nbsp;Whitespace&nbsp;Changes</a>
    }else{
      @ %z(xhref("class='button'","%R/%s/%T?sbs=%d&w",zPage,zName,sideBySide))
      @ Ignore&nbsp;Whitespace</a>
    }
  }else{
    @ %z(xhref("class='button'","%R/%s/%T?sbs=0",zPage,zName))
    @ Show&nbsp;Unified&nbsp;Diffs</a>
    @ %z(xhref("class='button'","%R/%s/%T?sbs=1",zPage,zName))
    @ Show&nbsp;Side-by-Side&nbsp;Diffs</a>
  }
  if( zParent ){






    @ %z(xhref("class='button'","%R/vpatch?from=%s&to=%s",zParent,zUuid))
    @ Patch</a>






  }
























  @</div>
  if( pRe ){
    @ <p><b>Only differences that match regular expression "%h(zRe)"
    @ are shown.</b></p>
  }
  db_prepare(&q3,
    "SELECT name,"
    "       mperm,"
    "       (SELECT uuid FROM blob WHERE rid=mlink.pid),"
    "       (SELECT uuid FROM blob WHERE rid=mlink.fid),"
    "       (SELECT name FROM filename WHERE filename.fnid=mlink.pfnid)"
    "  FROM mlink JOIN filename ON filename.fnid=mlink.fnid"
    " WHERE mlink.mid=%d"
    "   AND (mlink.fid>0"
           " OR mlink.fnid NOT IN (SELECT pfnid FROM mlink WHERE mid=%d))"
    " ORDER BY name /*sort*/",
    rid, rid
  );

  while( db_step(&q3)==SQLITE_ROW ){
    const char *zName = db_column_text(&q3,0);
    int mperm = db_column_int(&q3, 1);
    const char *zOld = db_column_text(&q3,2);
    const char *zNew = db_column_text(&q3,3);
    const char *zOldName = db_column_text(&q3, 4);
    append_file_change_line(zName, zOld, zNew, zOldName, diffFlags,pRe,mperm);
  }
  db_finalize(&q3);

  append_diff_javascript(sideBySide);
  style_footer();
}

/*
** WEBPAGE: winfo
** URL:  /winfo?name=UUID

    if( strcmp(zModAction,"approve")==0 ){
      moderation_approve(rid);
    }
  }
  style_header("Update of \"%h\"", pWiki->zWikiTitle);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  zDate = db_text(0, "SELECT datetime(%.17g)", pWiki->rDate);
  style_submenu_element("Raw", "Raw", "artifact/%s", zUuid);
  style_submenu_element("History", "History", "whistory?name=%t",
                        pWiki->zWikiTitle);
  style_submenu_element("Page", "Page", "wiki?name=%t",
                        pWiki->zWikiTitle);
  login_anonymous_available();
  @ <div class="section">Overview</div>
  @ <p><table class="label-value">

  @ <tr><th>Original&nbsp;User:</th><td>
  hyperlink_to_user(pWiki->zUser, zDate, "</td></tr>");
  if( pWiki->nParent>0 ){
    int i;
    @ <tr><th>Parent%s(pWiki->nParent==1?"":"s"):</th><td>
    for(i=0; i<pWiki->nParent; i++){
      char *zParent = pWiki->azParent[i];
      @ %z(href("info/%s",zParent))%s(zParent)</a>
    }
    @ </td></tr>
  }
  @ </table>

  if( g.perm.ModWiki && modPending ){
    @ <div class="section">Moderation</div>

/*
** WEBPAGE: vdiff
** URL: /vdiff
**
** Query parameters:
**
**   from=TAG        Left side of the comparison
**   to=TAG          Right side of the comparison
**   branch=TAG      Show all changes on a particular branch
**   v=BOOLEAN       Default true.  If false, only list files that have changed
**   sbs=BOOLEAN     Side-by-side diff if true.  Unified diff if false
**   glob=STRING     only diff files matching this glob
**
**
** Show all differences between two checkins.
*/
void vdiff_page(void){
  int ridFrom, ridTo;
  int verboseFlag = 0;
  int sideBySide = 0;
  u64 diffFlags = 0;
  Manifest *pFrom, *pTo;
  ManifestFile *pFileFrom, *pFileTo;
  const char *zBranch;
  const char *zFrom;
  const char *zTo;
  const char *zRe;
  const char *zW;
  const char *zVerbose;
  const char *zGlob;
  ReCompiled *pRe = 0;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(); return; }
  login_anonymous_available();

  zRe = P("regex");
  if( zRe ) re_compile(&pRe, zRe, 0);
  zBranch = P("branch");
  if( zBranch && zBranch[0] ){
    cgi_replace_parameter("from", mprintf("root:%s", zBranch));
    cgi_replace_parameter("to", zBranch);
  }

    zVerbose = P("verbose");
  }
  if( !zVerbose ){
    zVerbose = P("detail"); /* deprecated */
  }
  verboseFlag = (zVerbose!=0) && !is_false(zVerbose);
  if( !verboseFlag && sideBySide ) verboseFlag = 1;
  zGlob = P("glob");
  zFrom = P("from");
  zTo = P("to");
  if(zGlob && !*zGlob){
    zGlob = NULL;
  }
  diffFlags = construct_diff_flags(verboseFlag, sideBySide);
  zW = (diffFlags&DIFF_IGNORE_ALLWS)?"&w":"";
  if( sideBySide || verboseFlag ){
    style_submenu_element("Hide Diff", "hidediff",
                          "%R/vdiff?from=%T&to=%T&sbs=0%s%T%s",
                          zFrom, zTo,
                          zGlob ? "&glob=" : "", zGlob ? zGlob : "", zW);
  }
  if( !sideBySide ){
    style_submenu_element("Side-by-Side Diff", "sbsdiff",
                          "%R/vdiff?from=%T&to=%T&sbs=1%s%T%s",
                          zFrom, zTo,
                          zGlob ? "&glob=" : "", zGlob ? zGlob : "", zW);
  }
  if( sideBySide || !verboseFlag ) {
    style_submenu_element("Unified Diff", "udiff",
                          "%R/vdiff?from=%T&to=%T&sbs=0&v%s%T%s",
                          zFrom, zTo,
                          zGlob ? "&glob=" : "", zGlob ? zGlob : "", zW);
  }
  style_submenu_element("Invert", "invert",
                        "%R/vdiff?from=%T&to=%T&sbs=%d%s%s%T%s", zTo, zFrom,
                        sideBySide, (verboseFlag && !sideBySide)?"&v":"",
                        zGlob ? "&glob=" : "", zGlob ? zGlob : "", zW);
  if( zGlob ){
    style_submenu_element("Clear glob", "clearglob",
                          "%R/vdiff?from=%T&to=%T&sbs=%d%s%s", zFrom, zTo,
                          sideBySide, (verboseFlag && !sideBySide)?"&v":"", zW);
  }else{
    style_submenu_element("Patch", "patch",
                          "%R/vpatch?from=%T&to=%T%s", zFrom, zTo, zW);
  }
  if( sideBySide || verboseFlag ){
    if( *zW ){
      style_submenu_element("Show Whitespace Differences", "whitespace",
                            "%R/vdiff?from=%T&to=%T&sbs=%d%s%s%T", zFrom, zTo,
                            sideBySide, (verboseFlag && !sideBySide)?"&v":"",
                            zGlob ? "&glob=" : "", zGlob ? zGlob : "");
    }else{
      style_submenu_element("Ignore Whitespace", "ignorews",
                            "%R/vdiff?from=%T&to=%T&sbs=%d%s%s%T&w", zFrom, zTo,
                            sideBySide, (verboseFlag && !sideBySide)?"&v":"",
                            zGlob ? "&glob=" : "", zGlob ? zGlob : "");
    }
  }
  style_header("Check-in Differences");
  @ <h2>Difference From:</h2><blockquote>
  checkin_description(ridFrom);
  @ </blockquote><h2>To:</h2><blockquote>
  checkin_description(ridTo);
  @ </blockquote>
  if( pRe ){
    @ <p><b>Only differences that match regular expression "%h(zRe)"
    @ are shown.</b></p>
  }
  if( zGlob ){
    @ <p><b>Only files matching the glob "%h(zGlob)" are shown.</b></p>
  }
  @<hr /><p>

  manifest_file_rewind(pFrom);
  pFileFrom = manifest_file_next(pFrom, 0);
  manifest_file_rewind(pTo);
  pFileTo = manifest_file_next(pTo, 0);

  while( pFileFrom || pFileTo ){
    int cmp;
    if( pFileFrom==0 ){
      cmp = +1;
    }else if( pFileTo==0 ){
      cmp = -1;
    }else{
      cmp = fossil_strcmp(pFileFrom->zName, pFileTo->zName);
    }
    if( cmp<0 ){
      if(!zGlob || strglob(zGlob, pFileFrom->zName)){
        append_file_change_line(pFileFrom->zName,
                                pFileFrom->zUuid, 0, 0, diffFlags, pRe, 0);
      }
      pFileFrom = manifest_file_next(pFrom, 0);
    }else if( cmp>0 ){
      if(!zGlob || strglob(zGlob, pFileTo->zName)){
        append_file_change_line(pFileTo->zName,
                                0, pFileTo->zUuid, 0, diffFlags, pRe,
                                manifest_file_mperm(pFileTo));
      }
      pFileTo = manifest_file_next(pTo, 0);
    }else if( fossil_strcmp(pFileFrom->zUuid, pFileTo->zUuid)==0 ){

      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }else{
      if(!zGlob || (strglob(zGlob, pFileFrom->zName)
                || strglob(zGlob, pFileTo->zName))){
        append_file_change_line(pFileFrom->zName,
                                pFileFrom->zUuid,
                                pFileTo->zUuid, 0, diffFlags, pRe,
                                manifest_file_mperm(pFileTo));
      }
      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }
  }
  manifest_destroy(pFrom);
  manifest_destroy(pTo);
  append_diff_javascript(sideBySide);

    hyperlink_to_uuid(zVers);
    if( zBr && zBr[0] ){
      @ on branch %z(href("%R/timeline?r=%T",zBr))%h(zBr)</a>
    }
    @ - %!w(zCom) (user:
    hyperlink_to_user(zUser,zDate,")");
    if( g.perm.Hyperlink ){
      @ %z(href("%R/finfo?name=%T&ci=%s",zName,zVers))[ancestry]</a>
      @ %z(href("%R/annotate?filename=%T&checkin=%s",zName,zVers))
      @ [annotate]</a>
      @ %z(href("%R/blame?filename=%T&checkin=%s",zName,zVers))
      @ [blame]</a>
    }
    cnt++;
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_append(pDownloadName, zName, -1);
    }
  }

      @ Also attachment "%h(zFilename)" to
    }else{
      @ Attachment "%h(zFilename)" to
    }
    objType |= OBJTYPE_ATTACHMENT;
    if( strlen(zTarget)==UUID_SIZE && validate16(zTarget,UUID_SIZE) ){
      if( g.perm.Hyperlink && g.perm.RdTkt ){
        @ ticket [%z(href("%R/tktview?name=%s",zTarget))%S(zTarget)</a>]
      }else{
        @ ticket [%S(zTarget)]
      }
    }else{
      if( g.perm.Hyperlink && g.perm.RdWiki ){
        @ wiki page [%z(href("%R/wiki?name=%t",zTarget))%h(zTarget)</a>]
      }else{

  db_finalize(&q);
  if( cnt==0 ){
    @ Control artifact.
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_appendf(pDownloadName, "%.10s.txt", zUuid);
    }
  }else if( linkToView && g.perm.Hyperlink ){
    @ %z(href("%R/artifact/%s",zUuid))[view]</a>
  }
  return objType;
}


/*
** WEBPAGE: fdiff
** URL: fdiff?v1=UUID&v2=UUID&patch&sbs=BOOLEAN&regex=REGEX
**
** Two arguments, v1 and v2, identify the files to be diffed.  Show the
** difference between the two artifacts.  Show diff side by side unless sbs
** is 0.  Generate plaintext if "patch" is present.
*/
void diff_page(void){
  int v1, v2;
  int isPatch;
  int sideBySide;
  char *zV1;
  char *zV2;
  const char *zRe;
  const char *zW;      /* URL param for ignoring whitespace */
  ReCompiled *pRe = 0;
  u64 diffFlags;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(); return; }
  v1 = name_to_rid_www("v1");
  v2 = name_to_rid_www("v2");

  sideBySide = !is_false(PD("sbs","1"));
  zV1 = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", v1);
  zV2 = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", v2);
  diffFlags = construct_diff_flags(1, sideBySide) | DIFF_HTML;

  style_header("Diff");
  zW = (diffFlags&DIFF_IGNORE_ALLWS)?"&w":"";
  if( *zW ){
    style_submenu_element("Show Whitespace Changes", "Show Whitespace Changes",
                          "%s/fdiff?v1=%T&v2=%T&sbs=%d",
                          g.zTop, P("v1"), P("v2"), sideBySide);
  }else{
    style_submenu_element("Ignore Whitespace", "Ignore Whitespace",
                          "%s/fdiff?v1=%T&v2=%T&sbs=%d&w",
                          g.zTop, P("v1"), P("v2"), sideBySide);
  }
  style_submenu_element("Patch", "Patch", "%s/fdiff?v1=%T&v2=%T&patch",
                        g.zTop, P("v1"), P("v2"));
  if( !sideBySide ){
    style_submenu_element("Side-by-Side Diff", "sbsdiff",
                          "%s/fdiff?v1=%T&v2=%T&sbs=1%s",
                          g.zTop, P("v1"), P("v2"), zW);
  }else{
    style_submenu_element("Unified Diff", "udiff",
                          "%s/fdiff?v1=%T&v2=%T&sbs=0%s",
                          g.zTop, P("v1"), P("v2"), zW);
  }

  if( P("smhdr")!=0 ){
    @ <h2>Differences From Artifact
    @ %z(href("%R/artifact/%s",zV1))[%S(zV1)]</a> To
    @ %z(href("%R/artifact/%s",zV2))[%S(zV2)]</a>.</h2>
  }else{
    @ <h2>Differences From
    @ Artifact %z(href("%R/artifact/%s",zV1))[%S(zV1)]</a>:</h2>
    object_description(v1, 0, 0);
    @ <h2>To Artifact %z(href("%R/artifact/%s",zV2))[%S(zV2)]</a>:</h2>
    object_description(v2, 0, 0);
  }
  if( pRe ){
    @ <b>Only differences that match regular expression "%h(zRe)"
    @ are shown.</b>
  }
  @ <hr />

  Blob content;

  rid = name_to_rid_www("name");
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(); return; }
  if( rid==0 ) fossil_redirect_home();
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  if( fossil_strcmp(P("name"), zUuid)==0 && login_is_nobody() ){
    g.isConst = 1;
  }
  free(zUuid);
  zMime = P("m");
  if( zMime==0 ){
    char *zFName = db_text(0, "SELECT filename.name FROM mlink, filename"
                              " WHERE mlink.fid=%d"

        style_submenu_element("Html", "Html",
                              "%s/artifact/%s", g.zTop, zUuid);
      }else{
        renderAsHtml = 1;
        style_submenu_element("Text", "Text",
                              "%s/artifact/%s?txt=1", g.zTop, zUuid);
      }
    }else if( fossil_strcmp(zMime, "text/x-fossil-wiki")==0
           || fossil_strcmp(zMime, "text/x-markdown")==0 ){
      if( asText ){
        style_submenu_element("Wiki", "Wiki",
                              "%s/artifact/%s", g.zTop, zUuid);
      }else{
        renderAsWiki = 1;
        style_submenu_element("Text", "Text",
                              "%s/artifact/%s?txt=1", g.zTop, zUuid);
      }
    }
  }
  if( (objType & (OBJTYPE_WIKI|OBJTYPE_TICKET))!=0 ){
    style_submenu_element("Parsed", "Parsed", "%R/info/%s", zUuid);
  }
  @ <hr />
  content_get(rid, &content);
  if( renderAsWiki ){
    wiki_render_by_mimetype(&content, zMime);
  }else if( renderAsHtml ){
    @ <iframe src="%R/raw/%T(blob_str(&downloadName))?name=%s(zUuid)"
    @   width="100%%" frameborder="0" marginwidth="0" marginheight="0"
    @   sandbox="allow-same-origin"
    @   onload="this.height = this.contentDocument.documentElement.scrollHeight;">
    @ </iframe>
  }else{
    style_submenu_element("Hex","Hex", "%s/hexdump?name=%s", g.zTop, zUuid);
    blob_to_utf8_no_bom(&content, 0);
    zMime = mimetype_from_content(&content);
    @ <blockquote>
    if( zMime==0 ){
      const char *zLn = P("ln");
      const char *z;

      z = blob_str(&content);
      if( zLn ){
        output_text_with_line_numbers(z, zLn);
      }else{
        @ <pre>
        @ %h(z)
        @ </pre>
      }
    }else if( strncmp(zMime, "image/", 6)==0 ){
      @ <img src="%R/raw/%s(zUuid)?m=%s(zMime)" />
      style_submenu_element("Image", "Image",
                            "%R/raw/%s?m=%s", zUuid, zMime);
    }else{
      @ <i>(file is %d(blob_size(&content)) bytes of binary data)</i>
    }
    @ </blockquote>
  }
  style_footer();
}

      moderation_approve(rid);
    }
  }
  zTktTitle = db_table_has_column( "ticket", "title" )
      ? db_text("(No title)", "SELECT title FROM ticket WHERE tkt_uuid=%Q", zTktName)
      : 0;
  style_header("Ticket Change Details");
  style_submenu_element("Raw", "Raw", "%R/artifact/%s", zUuid);
  style_submenu_element("History", "History", "%R/tkthistory/%s", zTktName);
  style_submenu_element("Page", "Page", "%R/tktview/%t", zTktName);
  style_submenu_element("Timeline", "Timeline", "%R/tkttimeline/%t", zTktName);
  if( P("plaintext") ){
    style_submenu_element("Formatted", "Formatted", "%R/info/%s", zUuid);
  }else{
    style_submenu_element("Plaintext", "Plaintext",
                          "%R/info/%s?plaintext", zUuid);
  }

  @ <div class="section">Overview</div>
  @ <p><table class="label-value">
  @ <tr><th>Artifact&nbsp;ID:</th>
  @ <td>%z(href("%R/artifact/%s",zUuid))%s(zUuid)</a>
  if( g.perm.Setup ){

        blob_appendf(&ctrl, "T %s%F %s\n", zPrefix, zTag, zUuid);
      }
    }
    db_finalize(&q);
    if( nChng>0 ){
      int nrid;
      Blob cksum;
      blob_appendf(&ctrl, "U %F\n", login_name());
      md5sum_blob(&ctrl, &cksum);
      blob_appendf(&ctrl, "Z %b\n", &cksum);
      db_begin_transaction();
      g.markPrivate = content_is_private(rid);
      nrid = content_put(&ctrl);
      manifest_crosslink(nrid, &ctrl, MC_PERMIT_HOOKS);
      assert( blob_is_reset(&ctrl) );

    @ <hr />
    blob_reset(&suffix);
  }
  @ <p>Make changes to attributes of check-in
  @ [%z(href("%R/ci/%s",zUuid))%s(zUuid)</a>]:</p>
  form_begin(0, "%R/ci_edit");
  login_insert_csrf_secret();
  @ <div><input type="hidden" name="r" value="%s(zUuid)" />
  @ <table border="0" cellspacing="10">

  @ <tr><th align="right" valign="top">User:</th>
  @ <td valign="top">
  @   <input type="text" name="u" size="20" value="%h(zNewUser)" />
  @ </td></tr>

  @ <input id="brname" type="text" style="width:15;" name="brname"
  @ value="%h(zNewBranch)"
  @ onkeyup="chgbn(this.value.trim(),'%h(zBranchName)')" /></td></tr>
  if( !fHasHidden ){
    @ <tr><th align="right" valign="top">Branch Hiding:</th>
    @ <td valign="top">
    @ <label><input type="checkbox" id="hidebr" name="hide"%s(zHideFlag) />
    @ Hide branch
    @ <span style="font-weight:bold" id="hbranch">%h(zBranchName)</span>
    @ from the timeline starting from this check-in</label>
    @ </td></tr>
  }
  if( !fHasClosed ){
    if( is_a_leaf(rid) ){
      @ <tr><th align="right" valign="top">Leaf Closure:</th>

** Here's how command/page dispatching works: json_page_top() (in HTTP mode) or
** json_cmd_top() (in CLI mode) catch the "json" path/command. Those functions then
** dispatch to a JSON-mode-specific command/page handler with the type fossil_json_f().
** See the API docs for that typedef (below) for the semantics of the callbacks.
**
**
*/
#include "VERSION.h"
#include "config.h"
#include "json.h"
#include <assert.h>
#include <time.h>

#if INTERFACE
#include "json_detail.h" /* workaround for apparent enum limitation in makeheaders */
#endif

  INT(g, xferPanic);
  INT(g, fullHttpReply);
  INT(g, xlinkClusterOnly);
  INT(g, fTimeFormat);
  INT(g, markPrivate);
  INT(g, clockSkewSeen);
  INT(g, isHTTP);
  INT(g.url, isFile);
  INT(g.url, isHttps);
  INT(g.url, isSsh);
  INT(g.url, port);
  INT(g.url, dfltPort);
  INT(g, useLocalauth);
  INT(g, noPswd);
  INT(g, userUid);
  INT(g, rcvid);
  INT(g, okCsrf);
  INT(g, thTrace);
  INT(g, isHome);
  INT(g, nAux);
  INT(g, allowSymlinks);

  CSTR(g, zMainDbType);
  CSTR(g, zConfigDbType);
  CSTR(g, zLocalRoot);
  CSTR(g, zPath);
  CSTR(g, zExtra);
  CSTR(g, zBaseURL);
  CSTR(g, zTop);
  CSTR(g, zContentType);
  CSTR(g, zErrMsg);
  CSTR(g.url, name);
  CSTR(g.url, hostname);
  CSTR(g.url, protocol);
  CSTR(g.url, path);
  CSTR(g.url, user);
  CSTR(g.url, passwd);
  CSTR(g.url, canonical);
  CSTR(g.url, proxyAuth);
  CSTR(g.url, fossil);
  CSTR(g, zLogin);
  CSTR(g, zSSLIdentity);
  CSTR(g, zIpAddr);
  CSTR(g, zNonce);
  CSTR(g, zCsrfToken);

  o = cson_new_object();

}

/*
** Create a temporary table suitable for storing timeline data.
*/
static void json_timeline_temp_table(void){
  /* Field order MUST match that from json_timeline_query()!!! */
  static const char zSql[] =
    @ CREATE TEMP TABLE IF NOT EXISTS json_timeline(
    @   sortId INTEGER PRIMARY KEY,
    @   rid INTEGER,
    @   uuid TEXT,
    @   mtime INTEGER,
    @   timestampString TEXT,
    @   comment TEXT,

    @   bgcolor,
    @   event.type,
    @   (SELECT group_concat(substr(tagname,5), ',') FROM tag, tagxref
    @     WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid
    @       AND tagxref.rid=blob.rid AND tagxref.tagtype>0) as tags,
    @   tagid as tagId,
    @   brief as brief
    @  FROM event JOIN blob
    @ WHERE blob.rid=event.objid
  ;
  return zBaseSql;
}

/*
** Internal helper to append query information if the

** flags may optionally be a bitmask of json_get_changed_files flags,
** or 0 for defaults.
*/
cson_value * json_get_changed_files(int rid, int flags){
  cson_value * rowsV = NULL;
  cson_array * rows = NULL;
  Stmt q = empty_Stmt;
  db_prepare(&q,
           "SELECT (pid==0) AS isnew,"
           "       (fid==0) AS isdel,"
           "       (SELECT name FROM filename WHERE fnid=mlink.fnid) AS name,"
           "       blob.uuid as uuid,"
           "       (SELECT uuid FROM blob WHERE rid=pid) as parent,"
           "       blob.size as size"
           "  FROM mlink, blob"

    goto manifest;
  }

  blob_init(&w1, pW1->zWiki, -1);
  blob_zero(&w2);
  blob_init(&w2, pW2->zWiki, -1);
  blob_zero(&d);
  diffFlags = DIFF_IGNORE_EOLWS | DIFF_STRIP_EOLCR;
  text_diff(&w2, &w1, &d, 0, diffFlags);
  blob_reset(&w1);
  blob_reset(&w2);

  pay = cson_new_object();
  
  zUuid = json_wiki_get_uuid_for_rid( pW1->rid );

/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to check the host load-average and abort
** CPU-intensive operations if the load-average is too high.
*/
#include "config.h"
#include "loadctrl.h"
#include <assert.h>

/*
** Return the load average for the host processor
*/
double load_average(void){
#if !defined(_WIN32) && !defined(FOSSIL_OMIT_LOAD_AVERAGE)
  double a[3];
  if( getloadavg(a, 3)>0 ){
    return a[0];
  }
#endif
  return 0.0;
}

/*
** COMMAND: test-loadavg
** %fossil test-loadavg
**
** Print the load average on the host machine.
*/
void loadavg_test_cmd(void){
  fossil_print("load-average: %f\n", load_average());
}

/*
** Abort the current operation of the load average of the host computer
** is too high.
*/
void load_control(void){
  double mxLoad = atof(db_get("max-loadavg", "0"));
  if( mxLoad<=0.0 || mxLoad>=load_average() ) return;

  style_header("Server Overload");
  @ <h2>The server load is currently too high.
  @ Please try again later.</h2>
  @ <p>Current load average: %f(load_average()).<br />
  @ Load average limit: %f(mxLoad)</p>
  style_footer();
  cgi_set_status(503,"Server Overload");
  cgi_reply();
  exit(0);
}

** not really the point.  The anonymous login keeps search-engine
** crawlers and site download tools like wget from walking change
** logs and downloading diffs of very version of the archive that
** has ever existed, and things like that.
*/
#include "config.h"
#include "login.h"
#if defined(_WIN32)
#  include <windows.h>           /* for Sleep */
#  if defined(__MINGW32__) || defined(_MSC_VER)
#    define sleep Sleep            /* windows does not have sleep, but Sleep */
#  endif
#endif
#include <time.h>

  }else{
    fossil_redirect_home();
  }
}

/*
** The IP address of the client is stored as part of login cookies.
** But some clients are behind firewalls that shift the IP address
** with each HTTP request.  To allow such (broken) clients to log in,
** extract just a prefix of the IP address.
*/
static char *ipPrefix(const char *zIP){
  int i, j;
  static int ip_prefix_terms = -1;
  if( ip_prefix_terms<0 ){
    ip_prefix_terms = db_get_int("ip-prefix-terms",2);
  }

**
** This is a no-op if g.userUid is 0.
*/
void login_clear_login_data(){
  if(!g.userUid){
    return;
  }else{
    char const * cookie = login_cookie_name();
    /* To logout, change the cookie value to an empty string */
    cgi_set_cookie(cookie, "",
                   login_cookie_path(), -86400);
    db_multi_exec("UPDATE user SET cookie=NULL, ipaddr=NULL, "
                  "  cexpire=0 WHERE uid=%d"
                  "  AND login NOT IN ('anonymous','nobody',"
                  "  'developer','reader')", g.userUid);

   && (zNew1 = P("n1"))!=0 && (zNew2 = P("n2"))!=0
  ){
    /* The user requests a password change */
    zSha1Pw = sha1_shared_secret(zPasswd, g.zLogin, 0);
    if( db_int(1, "SELECT 0 FROM user"
                  " WHERE uid=%d"
                  " AND (constant_time_cmp(pw,%Q)=0"
                  "      OR constant_time_cmp(pw,%Q)=0)",
                  g.userUid, zSha1Pw, zPasswd) ){
      sleep(1);
      zErrMsg =
         @ <p><span class="loginError">
         @ You entered an incorrect old password while attempting to change
         @ your password.  Your password is unchanged.
         @ </span></p>
      ;
    }else if( fossil_strcmp(zNew1,zNew2)!=0 ){
      zErrMsg =
         @ <p><span class="loginError">
         @ The two copies of your new passwords do not match.
         @ Your password is unchanged.
         @ </span></p>
      ;
    }else{
      char *zNewPw = sha1_shared_secret(zNew1, g.zLogin, 0);

  }
  if( zUsername!=0 && zPasswd!=0 && zPasswd[0]!=0 ){
    /* Attempting to log in as a user other than anonymous.
    */
    uid = login_search_uid(zUsername, zPasswd);
    if( uid<=0 ){
      sleep(1);
      zErrMsg =
         @ <p><span class="loginError">
         @ You entered an unknown user or an incorrect password.
         @ </span></p>
      ;
      record_login_attempt(zUsername, zIpAddr, 0);
    }else{
      /* Non-anonymous login is successful.  Set a cookie of the form:

  }
  @ <tr>
  @   <td></td>
  @   <td><input type="submit" name="in" value="Login"
  @        onClick="chngAction(this.form)" /></td>
  @ </tr>
  @ </table>
  @ <script>
  @   gebi('u').focus()
  @   function chngAction(form){
  if( g.sslNotAvailable==0
   && strncmp(g.zBaseURL,"https:",6)!=0
   && db_get_boolean("https-login",0)
  ){
     char *zSSL = mprintf("https:%s", &g.zBaseURL[5]);

    @ <p>To change your login to a different user, enter
  }
  @ your user-id and password at the left and press the
  @ "Login" button.  Your user name will be stored in a browser cookie.
  @ You must configure your web browser to accept cookies in order for
  @ the login to take.</p>
  if( db_get_boolean("self-register", 0) ){
    @ <p>If you do not have an account, you can
    @ <a href="%s(g.zTop)/register?g=%T(P("G"))">create one</a>.
  }
  if( zAnonPw ){
    unsigned int uSeed = captcha_seed();
    char const *zDecoded = captcha_decode(uSeed);
    int bAutoCaptcha = db_get_boolean("auto-captcha", 0);
    char *zCaptcha = captcha_render(zDecoded);

    @ </form>
  }
  style_footer();
}

/*
** Attempt to find login credentials for user zLogin on a peer repository
** with project code zCode.  Transfer those credentials to the local
** repository.
**
** Return true if a transfer was made and false if not.
*/
static int login_transfer_credentials(
  const char *zLogin,          /* Login we are looking for */
  const char *zCode,           /* Project code of peer repository */
  const char *zHash,           /* HASH from login cookie HASH/CODE/LOGIN */
  const char *zRemoteAddr      /* Request comes from here */
){
  sqlite3 *pOther = 0;         /* The other repository */
  sqlite3_stmt *pStmt;         /* Query against the other repository */
  char *zSQL;                  /* SQL of the query against other repo */
  char *zOtherRepo;            /* Filename of the other repository */
  int rc;                      /* Result code from SQLite library functions */
  int nXfer = 0;               /* Number of credentials transferred */

  zOtherRepo = db_text(0,
       "SELECT value FROM config WHERE name='peer-repo-%q'",
       zCode
  );
  if( zOtherRepo==0 ) return 0;  /* No such peer repository */

  rc = sqlite3_open_v2(
       zOtherRepo, &pOther,

  const char *zRemoteAddr        /* Abbreviated IP address for valid login */
){
  int uid;
  if( fossil_strcmp(zLogin, "anonymous")==0 ) return 0;
  if( fossil_strcmp(zLogin, "nobody")==0 ) return 0;
  if( fossil_strcmp(zLogin, "developer")==0 ) return 0;
  if( fossil_strcmp(zLogin, "reader")==0 ) return 0;
  uid = db_int(0,
    "SELECT uid FROM user"
    " WHERE login=%Q"
    "   AND ipaddr=%Q"
    "   AND cexpire>julianday('now')"
    "   AND length(cap)>0"
    "   AND length(pw)>0"
    "   AND constant_time_cmp(cookie,%Q)=0",

  /* Only run this check once.  */
  if( g.userUid!=0 ) return;

  sqlite3_create_function(g.db, "constant_time_cmp", 2, SQLITE_UTF8, 0,
                  constant_time_cmp_function, 0, 0);

  /* If the HTTP connection is coming over 127.0.0.1 and if
  ** local login is disabled and if we are using HTTP and not HTTPS,
  ** then there is no need to check user credentials.
  **
  ** This feature allows the "fossil ui" command to give the user
  ** full access rights without having to log in.
  */
  zRemoteAddr = ipPrefix(zIpAddr = PD("REMOTE_ADDR","nil"));
  if( ( fossil_strcmp(zIpAddr, "127.0.0.1")==0 ||

      /* Cookies of the form "HASH/TIME/anonymous".  The TIME must not be
      ** too old and the sha1 hash of TIME/IPADDR/SECRET must match HASH.
      ** SECRET is the "captcha-secret" value in the repository.
      */
      double rTime = atof(zArg);
      Blob b;
      blob_zero(&b);
      blob_appendf(&b, "%s/%s/%s",
                   zArg, zRemoteAddr, db_get("captcha-secret",""));
      sha1sum_blob(&b, &b);
      if( fossil_strcmp(zHash, blob_str(&b))==0 ){
        uid = db_int(0,
            "SELECT uid FROM user WHERE login='anonymous'"
            " AND length(cap)>0"
            " AND length(pw)>0"
            " AND %.17g+0.25>julianday('now')",
            rTime
        );
      }

    return;
  }
  for(i=0; zCap[i]; i++){
    switch( zCap[i] ){
      case 's':   g.perm.Setup = 1;  /* Fall thru into Admin */
      case 'a':   g.perm.Admin = g.perm.RdTkt = g.perm.WrTkt = g.perm.Zip =
                           g.perm.RdWiki = g.perm.WrWiki = g.perm.NewWiki =
                           g.perm.ApndWiki = g.perm.Hyperlink = g.perm.Clone =
                           g.perm.NewTkt = g.perm.Password = g.perm.RdAddr =
                           g.perm.TktFmt = g.perm.Attach = g.perm.ApndTkt =
                           g.perm.ModWiki = g.perm.ModTkt = 1;
                           /* Fall thru into Read/Write */
      case 'i':   g.perm.Read = g.perm.Write = 1;                     break;
      case 'o':   g.perm.Read = 1;                                 break;
      case 'z':   g.perm.Zip = 1;                                  break;