/*
** Copyright (c) 2020 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 fossil-specific code related to pikchr.
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include "pikchrshow.h"
#if INTERFACE
/* These are described in pikchr_process()'s docs. */
/* The first two must match the values from pikchr.c */
#define PIKCHR_PROCESS_PLAINTEXT_ERRORS 0x0001
#define PIKCHR_PROCESS_DARK_MODE 0x0002
/* end of flags supported directly by pikchr() */
#define PIKCHR_PROCESS_PASSTHROUGH 0x0003 /* Pass through these flags */
#define PIKCHR_PROCESS_TH1 0x0004
#define PIKCHR_PROCESS_TH1_NOSVG 0x0008
#define PIKCHR_PROCESS_NONCE 0x0010
#define PIKCHR_PROCESS_ERR_PRE 0x0020
#define PIKCHR_PROCESS_SRC 0x0040
#define PIKCHR_PROCESS_DIV 0x0080
#define PIKCHR_PROCESS_DIV_INDENT 0x0100
#define PIKCHR_PROCESS_DIV_CENTER 0x0200
#define PIKCHR_PROCESS_DIV_FLOAT_LEFT 0x0400
#define PIKCHR_PROCESS_DIV_FLOAT_RIGHT 0x0800
#define PIKCHR_PROCESS_DIV_TOGGLE 0x1000
#define PIKCHR_PROCESS_DIV_SOURCE 0x2000
#define PIKCHR_PROCESS_DIV_SOURCE_INLINE 0x4000
#endif
/*
** Processes a pikchr script, optionally with embedded TH1, and
** produces HTML code for it. zIn is the NUL-terminated input
** script. pikFlags may be a bitmask of any of the PIKCHR_PROCESS_xxx
** flags documented below. thFlags may be a bitmask of any of the
** TH_INIT_xxx and/or TH_R2B_xxx flags. Output is sent to pOut,
** appending to it without modifying any prior contents.
**
** Returns 0 on success, 1 if TH1 processing failed, or 2 if pikchr
** processing failed. In either case, the error message (if any) from
** TH1 or pikchr will be appended to pOut.
**
** pikFlags flag descriptions:
**
** - PIKCHR_PROCESS_TH1 means to run zIn through TH1, using the TH1
** init flags specified in the 3rd argument. If thFlags is non-0 then
** this flag is assumed even if it is not specified.
**
** - PIKCHR_PROCESS_TH1_NOSVG means that processing stops after the
** TH1 eval step, thus the output will be (presumably) a
** TH1-generated/processed pikchr script (or whatever else the TH1
** outputs). If this flag is set, PIKCHR_PROCESS_TH1 is assumed even
** if it is not specified.
**
** All of the remaining flags listed below are ignored if
** PIKCHR_PROCESS_TH1_NOSVG is specified!
**
** - PIKCHR_PROCESS_DIV: if set, the SVG result is wrapped in a DIV
** element which specifies a max-width style value based on the SVG's
** calculated size. This flag has multiple mutually exclusive forms:
**
** - PIKCHR_PROCESS_DIV uses default element alignment.
** - PIKCHR_PROCESS_DIV_INDENT indents the div.
** - PIKCHR_PROCESS_DIV_CENTER centers the div.
** - PIKCHR_PROCESS_DIV_FLOAT_LEFT floats the div left.
** - PIKCHR_PROCESS_DIV_FLOAT_RIGHT floats the div right.
**
** If more than one is specified, which one is used is undefined. Those
** flags may be OR'd with one or both of the following:
**
** - PIKCHR_PROCESS_DIV_TOGGLE: adds the 'toggle' CSS class to the
** outer DIV so that event-handler code can install different
** toggling behaviour than the default. Default is ctrl-click, but
** this flag enables single-click toggling for the element.
**
** - PIKCHR_PROCESS_DIV_SOURCE: adds the 'source' CSS class to the
** outer DIV, which is a hint to the client-side renderer (see
** fossil.pikchr.js) that the pikchr should initially be rendered
** in source code form mode (the default is to hide the source and
** show the SVG).
**
** - PIKCHR_PROCESS_DIV_SOURCE_INLINE: adds the 'source-inline' CSS
** class to the outer wrapper. This modifier changes how the
** 'source' CSS class gets applied: with this flag, the source view
** should be rendered "inline" (same position as the graphic), else
** it is to be left-aligned.
**
** - PIKCHR_PROCESS_NONCE: if set, the resulting SVG/DIV are wrapped
** in "safe nonce" comments, which are a fossil-internal mechanism
** which prevents the wiki/markdown processors from re-processing this
** output. This is necessary when calling this routine in the context
** of wiki/embedded doc processing, but not (e.g.) when fetching
** an image for /pikchrpage.
**
** - PIKCHR_PROCESS_SRC: if set, a new PRE.pikchr-src element is
** injected adjacent to the SVG element which contains the
** HTML-escaped content of the input script. If
** PIKCHR_PROCESS_DIV_SOURCE or PIKCHR_PROCESS_DIV_SOURCE_INLINE is
** set, this flag is automatically implied.
**
** - PIKCHR_PROCESS_ERR_PRE: if set and pikchr() fails, the resulting
** error report is wrapped in a PRE element, else it is retained
** as-is (intended only for console output).
*/
int pikchr_process(const char * zIn, int pikFlags, int thFlags,
Blob * pOut){
Blob bIn = empty_blob;
int isErr = 0;
const char *zNonce = (PIKCHR_PROCESS_NONCE & pikFlags)
? safe_html_nonce(1) : 0;
if(!(PIKCHR_PROCESS_DIV & pikFlags)
/* If any DIV_xxx flags are set, set DIV */
&& (PIKCHR_PROCESS_DIV_INDENT
| PIKCHR_PROCESS_DIV_CENTER
| PIKCHR_PROCESS_DIV_FLOAT_RIGHT
| PIKCHR_PROCESS_DIV_FLOAT_LEFT
| PIKCHR_PROCESS_DIV_SOURCE
| PIKCHR_PROCESS_DIV_SOURCE_INLINE
| PIKCHR_PROCESS_DIV_TOGGLE
) & pikFlags){
pikFlags |= PIKCHR_PROCESS_DIV;
}
if(!(PIKCHR_PROCESS_TH1 & pikFlags)
/* If any TH1_xxx flags are set, set TH1 */
&& (PIKCHR_PROCESS_TH1_NOSVG & pikFlags || thFlags!=0)){
pikFlags |= PIKCHR_PROCESS_TH1;
}
if(zNonce){
blob_appendf(pOut, "%s\n", zNonce);
}
if(PIKCHR_PROCESS_TH1 & pikFlags){
Blob out = empty_blob;
isErr = Th_RenderToBlob(zIn, &out, thFlags)
? 1 : 0;
if(isErr){
blob_append(pOut, blob_str(&out), blob_size(&out));
blob_reset(&out);
}else{
bIn = out;
}
}else{
blob_init(&bIn, zIn, -1);
}
if(!isErr){
if(PIKCHR_PROCESS_TH1_NOSVG & pikFlags){
blob_append(pOut, blob_str(&bIn), blob_size(&bIn));
}else{
int w = 0, h = 0;
const char * zContent = blob_str(&bIn);
char *zOut;
zOut = pikchr(zContent, "pikchr",
0x01 | (pikFlags&PIKCHR_PROCESS_PASSTHROUGH),
&w, &h);
if( w>0 && h>0 ){
const char * zClassToggle = "";
const char * zClassSource = "";
const char * zWrapperClass = "";
if(PIKCHR_PROCESS_DIV & pikFlags){
if(PIKCHR_PROCESS_DIV_CENTER & pikFlags){
zWrapperClass = " center";
}else if(PIKCHR_PROCESS_DIV_INDENT & pikFlags){
zWrapperClass = " indent";
}else if(PIKCHR_PROCESS_DIV_FLOAT_LEFT & pikFlags){
zWrapperClass = " float-left";
}else if(PIKCHR_PROCESS_DIV_FLOAT_RIGHT & pikFlags){
zWrapperClass = " float-right";
}
if(PIKCHR_PROCESS_DIV_TOGGLE & pikFlags){
zClassToggle = " toggle";
}
if(PIKCHR_PROCESS_DIV_SOURCE_INLINE & pikFlags){
if(PIKCHR_PROCESS_DIV_SOURCE & pikFlags){
zClassSource = " source source-inline";
}else{
zClassSource = " source-inline";
}
pikFlags |= PIKCHR_PROCESS_SRC;
}else if(PIKCHR_PROCESS_DIV_SOURCE & pikFlags){
zClassSource = " source";
pikFlags |= PIKCHR_PROCESS_SRC;
}
blob_appendf(pOut,"<div class='pikchr-wrapper"
"%s%s%s'>"
"<div class=\"pikchr-svg\" "
"style=\"max-width:%dpx\">\n",
zWrapperClass/*safe-for-%s*/,
zClassToggle/*safe-for-%s*/,
zClassSource/*safe-for-%s*/, w);
}
blob_append(pOut, zOut, -1);
if(PIKCHR_PROCESS_DIV & pikFlags){
blob_append(pOut, "</div>\n", 7);
}
if(PIKCHR_PROCESS_SRC & pikFlags){
static int counter = 0;
++counter;
blob_appendf(pOut, "<div class='pikchr-src'>"
"<pre id='pikchr-src-%d'>%h</pre>"
"<span class='hidden'>"
"<a href='%R/pikchrshow?fromSession' "
"class='pikchr-src-pikchrshow' target='_new-%d' "
"data-pikchrid='pikchr-src-%d' "
"title='Open this pikchr in /pikchrshow'"
">→ /pikchrshow</a></span>"
"</div>\n",
counter, blob_str(&bIn), counter, counter);
}
if(PIKCHR_PROCESS_DIV & pikFlags){
blob_append(pOut, "</div>\n", 7);
}
}else{
isErr = 2;
if(PIKCHR_PROCESS_ERR_PRE & pikFlags){
blob_append(pOut, "<pre class='error'>\n", 20);
}
blob_appendf(pOut, "%h", zOut);
if(PIKCHR_PROCESS_ERR_PRE & pikFlags){
blob_append(pOut, "\n</pre>\n", 8);
}
}
fossil_free(zOut);
}
}
if(zNonce){
blob_appendf(pOut, "%s\n", zNonce);
}
blob_reset(&bIn);
return isErr;
}
/*
** Legacy impl of /pikchrshow. pikchrshow_page() will delegate to
** this one if the "legacy" or "ajax" request arguments are set.
**
** A pikchr code editor and previewer, allowing users to experiment
** with pikchr code or prototype it for use in copy/pasting into forum
** posts, wiki pages, or embedded docs. This version of pikchrshow
** uses JavaScript to send pikchr code to the server for
** processing. The newer /pikchrshow applications runs pikchr on the
** client machine, without the need for back-and-forth network
** traffic.
*/
void pikchrshowcs_page(void){
const char *zContent = 0;
int isDark; /* true if the current skin is "dark" */
int pikFlags =
PIKCHR_PROCESS_DIV
| PIKCHR_PROCESS_SRC
| PIKCHR_PROCESS_ERR_PRE;
login_check_credentials();
if( !g.perm.RdWiki && !g.perm.Read && !g.perm.RdForum ){
cgi_redirectf("%R/login?g=pikchrshowcs");
}
if(P("wasm")){
pikchrshow_page();
return;
}
zContent = PD("content",P("p"));
if(P("ajax")!=0){
/* Called from the JS-side preview updater.
TODO: respond with JSON instead.*/
cgi_set_content_type("text/html");
if(zContent && *zContent){
Blob out = empty_blob;
const int isErr =
pikchr_process(zContent, pikFlags, 0, &out);
if(isErr){
cgi_printf_header("x-pikchrshow-is-error: %d\r\n", isErr);
}
CX("%b", &out);
blob_reset(&out);
}else{
CX("<pre>No content! Nothing to render</pre>");
}
return;
}/*ajax response*/
style_emit_noscript_for_js_page();
isDark = skin_detail_boolean("white-foreground");
if(!zContent){
zContent = "arrow right 200% \"Markdown\" \"Source\"\n"
"box rad 10px \"Markdown\" \"Formatter\" \"(markdown.c)\" fit\n"
"arrow right 200% \"HTML+SVG\" \"Output\"\n"
"arrow <-> down from last box.s\n"
"box same \"Pikchr\" \"Formatter\" \"(pikchr.c)\" fit\n";
}
style_header("PikchrShow Client/Server");
CX("<style>"); {
CX("div.content { padding-top: 0.5em }\n");
CX("#sbs-wrapper {"
"display: flex; flex-direction: column;"
"}\n");
CX("#sbs-wrapper > * {"
"margin: 0 0.25em 0.5em 0; flex: 1 10 auto;"
"align-self: stretch;"
"}\n");
CX("#sbs-wrapper textarea {"
"max-width: initial; flex: 1 1 auto;"
"}\n");
CX("#pikchrshow-output, #pikchrshow-form"
"{display: flex; flex-direction: column; align-items: stretch;}");
CX("#pikchrshow-form > * {margin: 0.25em 0}\n");
CX("#pikchrshow-output {flex: 5 1 auto; padding: 0}\n");
CX("#pikchrshow-output > pre, "
"#pikchrshow-output > pre > div, "
"#pikchrshow-output > pre > div > pre "
"{margin: 0; padding: 0}\n");
CX("#pikchrshow-output.error > pre "
/* Server-side error report */
"{padding: 0.5em}\n");
CX("#pikchrshow-controls {" /* where the buttons live */
"display: flex; flex-direction: row; "
"align-items: center; flex-wrap: wrap;"
"}\n");
CX("#pikchrshow-controls > * {"
"display: inline; margin: 0 0.25em 0.5em 0;"
"}\n");
CX("#pikchrshow-output-wrapper label {"
"cursor: pointer;"
"}\n");
CX("body.pikchrshow .input-with-label > * {"
"margin: 0 0.2em;"
"}\n");
CX("body.pikchrshow .input-with-label > label {"
"cursor: pointer;"
"}\n");
CX("#pikchrshow-output.dark-mode svg {"
/* Flip the colors to approximate a dark theme look */
"filter: invert(1) hue-rotate(180deg);"
"}\n");
CX("#pikchrshow-output-wrapper {"
"padding: 0.25em 0.5em; border-radius: 0.25em;"
"border-width: 1px;"/*some skins disable fieldset borders*/
"}\n");
CX("#pikchrshow-output-wrapper > legend > *:not(.copy-button){"
"margin-right: 0.5em; vertical-align: middle;"
"}\n");
CX("body.pikchrshow .v-align-middle{"
"vertical-align: middle"
"}\n");
CX(".dragover {border: 3px dotted rgba(0,255,0,0.6)}\n");
} CX("</style>");
CX("<div>Input pikchr code and tap Preview (or Shift-Enter) to render "
"it. <a href='?wasm'>Switch to WASM mode</a>.</div>");
CX("<div id='sbs-wrapper'>"); {
CX("<div id='pikchrshow-form'>"); {
CX("<textarea id='content' name='content' rows='15'>"
"%s</textarea>",zContent/*safe-for-%s*/);
CX("<div id='pikchrshow-controls'>"); {
CX("<button id='pikchr-submit-preview'>Preview</button>");
CX("<div class='input-with-label'>"); {
CX("<button id='pikchr-stash'>Stash</button>");
CX("<button id='pikchr-unstash'>Unstash</button>");
CX("<button id='pikchr-clear-stash'>Clear stash</button>");
CX("<span>Stores/restores a single pikchr script to/from "
"browser-local storage from/to the editor.</span>"
/* gets turned into a help-buttonlet */);
} CX("</div>"/*stash controls*/);
style_labeled_checkbox("flipcolors-wrapper", "flipcolors",
"Dark mode?",
"1", isDark, 0);
} CX("</div>"/*#pikchrshow-controls*/);
}
CX("</div>"/*#pikchrshow-form*/);
CX("<fieldset id='pikchrshow-output-wrapper'>"); {
CX("<legend></legend>"
/* Reminder: Firefox does not properly flexbox a LEGEND
element, always flowing it in column mode. */);
CX("<div id='pikchrshow-output'>");
if(*zContent){
Blob out = empty_blob;
pikchr_process(zContent, pikFlags, 0, &out);
CX("%b", &out);
blob_reset(&out);
} CX("</div>"/*#pikchrshow-output*/);
} CX("</fieldset>"/*#pikchrshow-output-wrapper*/);
} CX("</div>"/*sbs-wrapper*/);
builtin_fossil_js_bundle_or("fetch", "copybutton", "popupwidget",
"storage", "pikchr", NULL);
builtin_request_js("fossil.page.pikchrshow.js");
builtin_fulfill_js_requests();
style_finish_page();
}
/*
** WEBPAGE: pikchrshow
**
** A pikchr code editor and previewer, allowing users to experiment
** with pikchr code or prototype it for use in copy/pasting into forum
** posts, wiki pages, or embedded docs. This version of pikchrshow
** uses WebAssembly to run entirely in the client browser, without a
** need for back-and-forth client/server traffic to perform the
** rendering. The "legacy" version of this application, which sends
** all input to the server for rendering, can be accessed by adding
** the "legacy" URL argument.
**
** It optionally accepts a p=pikchr-script-code URL parameter or POST
** value to pre-populate the editor with that code.
*/
void pikchrshow_page(void){
const char *zContent = 0;
if(P("legacy") || P("ajax")){
pikchrshowcs_page();
return;
}
login_check_credentials();
if( !g.perm.RdWiki && !g.perm.Read && !g.perm.RdForum ){
cgi_redirectf("%R/login?g=pikchrshow");
}
style_emit_noscript_for_js_page();
style_header("PikchrShow");
zContent = PD("content",P("p"));
if(!zContent){
zContent = "arrow right 200% \"Markdown\" \"Source\"\n"
"box rad 10px \"Markdown\" \"Formatter\" \"(markdown.c)\" fit\n"
"arrow right 200% \"HTML+SVG\" \"Output\"\n"
"arrow <-> down from last box.s\n"
"box same \"Pikchr\" \"Formatter\" \"(pikchr.c)\" fit\n";
}
/* Wasm load/init progress widget... */
CX("<div class='emscripten'>"); {
CX("<figure id='module-spinner'>");
CX("<div class='spinner'></div>");
CX("<div class='center'><strong>Initializing app...</strong></div>");
CX("<div class='center'>");
CX("On a slow internet connection this may take a moment. If this ");
CX("message displays for \"a long time\", initialization may have ");
CX("failed and the JavaScript console may contain clues as to why. ");
CX("</div>");
CX("<div><a href='?legacy'>Switch to legacy mode</a></div>");
CX("</figure>");
CX("<div class='emscripten' id='module-status'>Downloading...</div>");
CX("<progress value='0' max='100' id='module-progress' hidden='1'>"
"</progress>");
} CX("</div><!-- .emscripten -->");
/* Main view... */
CX("<div id='view-split' class='app-view initially-hidden'>"); {
CX("<fieldset class='options collapsible'>"); {
CX("<legend><button class='fieldset-toggle'>Options</button></legend>");
CX("<div>");
CX("<span class='labeled-input'>");
CX("<input type='checkbox' id='opt-cb-sbs' ");
CX("data-csstgt='#main-wrapper' ");
CX("data-cssclass='side-by-side' ");
CX("data-config='sideBySide'>");
CX("<label for='opt-cb-sbs'>Side-by-side</label>");
CX("</span>");
CX("<span class='labeled-input'>");
CX("<input type='checkbox' id='opt-cb-swapio' ");
CX("data-csstgt='#main-wrapper' ");
CX("data-cssclass='swapio' ");
CX("data-config='swapInOut'>");
CX("<label for='opt-cb-swapio'>Swap in/out</label>");
CX("</span>");
CX("<span class='labeled-input'>");
CX("<input type='checkbox' id='opt-cb-autofit' ");
CX("data-config='renderAutofit'>");
CX("<label for='opt-cb-autofit' "
"title='Attempt to scale SVG to fit viewport. "
"Whether it will work depends in part on the size "
"and shape of the image and the viewport.'"
">Auto-fit SVG</label>");
CX("</span>");
CX("<span class='labeled-input'>");
CX("<input type='checkbox' id='opt-cb-autorender' ");
CX("data-csstgt='#main-wrapper' ");
CX("data-cssclass='auto-render' ");
CX("data-config='renderWhileTyping'>");
CX("<label for='opt-cb-autorender'>Render while typing</label>");
CX("</span>");
CX("<span class='labeled-input'>");
CX("<a href='?legacy'>Legacy mode</a>");
CX("</span>");
CX("</div><!-- options wrapper -->");
} CX("</fieldset>");
CX("<div id='main-wrapper' class=''>"); {
CX("<fieldset class='zone-wrapper input'>"); {
CX("<legend><div class='button-bar'>");
CX("<button id='btn-render' "
"title='Ctrl-Enter/Shift-Enter'>Render</button>");
CX("<button id='btn-clear'>Clear Input</button>");
CX("</div></legend>");
CX("<div><textarea id='input'");
CX("placeholder='Pikchr input. Ctrl-enter/shift-enter runs it.'>");
CX("/**\n");
CX(" Use ctrl-enter or shift-enter to execute\n");
CX(" pikchr code. If only a subset is currently\n");
CX(" selected, only that part is evaluated.\n*/\n");
CX("%s</textarea></div>",zContent/*safe-for-%s*/);
} CX("</fieldset><!-- .zone-wrapper.input -->");
CX("<fieldset class='zone-wrapper output'>"); {
CX("<legend><div class='button-bar'>");
CX("<button id='btn-render-mode'>Render Mode</button> ");
CX("<span style='white-space:nowrap'>"
"<span id='preview-copy-button' "
"title='Tap to copy to clipboard.'></span>"
"<label for='preview-copy-button' "
"title='Tap to copy to clipboard.'></label>"
"</span>");
CX("</div></legend>");
CX("<div id='pikchr-output-wrapper'>");
CX("<div id='pikchr-output'></div>");
CX("<textarea class='hidden' id='pikchr-output-text'></textarea>");
CX("</div>");
} CX("</fieldset> <!-- .zone-wrapper.output -->");
} CX("</div><!-- #main-wrapper -->");
} CX("</div><!-- #view-split -->");
builtin_fossil_js_bundle_or("dom", "storage", "copybutton", NULL);
builtin_request_js("fossil.page.pikchrshowasm.js");
builtin_fulfill_js_requests();
style_finish_page();
}
/*
** COMMAND: pikchr*
**
** Usage: %fossil pikchr [options] ?INFILE? ?OUTFILE?
**
** Accepts a pikchr script as input and outputs the rendered script as
** an SVG graphic. The INFILE and OUTFILE options default to stdin
** resp. stdout, and the names "-" can be used as aliases for those
** streams.
**
** Options:
** -div On success, add a DIV wrapper around the
** resulting SVG output which limits its max-width to
** its computed maximum ideal size
**
** -div-indent Like -div but indent the div
**
** -div-center Like -div but center the div
**
** -div-left Like -div but float the div left
**
** -div-right Like -div but float the div right
**
** -div-toggle Set the 'toggle' CSS class on the div (used by the
** JavaScript-side post-processor)
**
** -div-source Set the 'source' CSS class on the div, which tells
** CSS to hide the SVG and reveal the source by default.
**
** -src Store the input pikchr's source code in the output as
** a separate element adjacent to the SVG one. Implied
** by -div-source.
**
**
** -th Process the input using TH1 before passing it to pikchr
**
** -th-novar Disable $var and $<var> TH1 processing. Use this if the
** pikchr script uses '$' for its own purposes and that
** causes issues. This only affects parsing of '$' outside
** of TH1 script blocks. Code in such blocks is unaffected.
**
** -th-nosvg When using -th, output the post-TH1'd script
** instead of the pikchr-rendered output
**
** -th-trace Trace TH1 execution (for debugging purposes)
**
** -dark Change pikchr colors to assume a dark-mode theme.
**
**
** The -div-indent/center/left/right flags may not be combined.
**
** TH1-related Notes and Caveats:
**
** If the -th flag is used, this command must open a fossil database
** for certain functionality to work (via a check-out or the -R REPO
** flag). If opening a db fails, execution will continue but any TH1
** commands which require a db will trigger a fatal error.
**
** In Fossil skins, TH1 variables in the form $varName are expanded
** as-is and those in the form $<varName> are htmlized in the
** resulting output. This processor disables the htmlizing step, so $x
** and $<x> are equivalent unless the TH1-processed pikchr script
** invokes the TH1 command [enable_htmlify 1] to enable it. Normally
** that option will interfere with pikchr output, however, e.g. by
** HTML-encoding double-quotes.
**
** Many of the fossil-installed TH1 functions simply do not make any
** sense for pikchr scripts.
*/
void pikchr_cmd(void){
Blob bIn = empty_blob;
Blob bOut = empty_blob;
const char * zInfile = "-";
const char * zOutfile = "-";
const int fTh1 = find_option("th",0,0)!=0;
const int fNosvg = find_option("th-nosvg",0,0)!=0;
int isErr = 0;
int pikFlags = find_option("src",0,0)!=0
? PIKCHR_PROCESS_SRC : 0;
u32 fThFlags = TH_INIT_NO_ENCODE
| (find_option("th-novar",0,0)!=0 ? TH_R2B_NO_VARS : 0);
Th_InitTraceLog()/*processes -th-trace flag*/;
if(find_option("div",0,0)!=0){
pikFlags |= PIKCHR_PROCESS_DIV;
}else if(find_option("div-indent",0,0)!=0){
pikFlags |= PIKCHR_PROCESS_DIV_INDENT;
}else if(find_option("div-center",0,0)!=0){
pikFlags |= PIKCHR_PROCESS_DIV_CENTER;
}else if(find_option("div-float-left",0,0)!=0){
pikFlags |= PIKCHR_PROCESS_DIV_FLOAT_LEFT;
}else if(find_option("div-float-right",0,0)!=0){
pikFlags |= PIKCHR_PROCESS_DIV_FLOAT_RIGHT;
}
if(find_option("div-toggle",0,0)!=0){
pikFlags |= PIKCHR_PROCESS_DIV_TOGGLE;
}
if(find_option("div-source",0,0)!=0){
pikFlags |= PIKCHR_PROCESS_DIV_SOURCE | PIKCHR_PROCESS_SRC;
}
if(find_option("dark",0,0)!=0){
pikFlags |= PIKCHR_PROCESS_DARK_MODE;
}
verify_all_options();
if(g.argc>4){
usage("?INFILE? ?OUTFILE?");
}
if(g.argc>2){
zInfile = g.argv[2];
}
if(g.argc>3){
zOutfile = g.argv[3];
}
blob_read_from_file(&bIn, zInfile, ExtFILE);
if(fTh1){
db_find_and_open_repository(OPEN_ANY_SCHEMA | OPEN_OK_NOT_FOUND, 0)
/* ^^^ needed for certain TH1 functions to work */;
pikFlags |= PIKCHR_PROCESS_TH1;
if(fNosvg) pikFlags |= PIKCHR_PROCESS_TH1_NOSVG;
}
isErr = pikchr_process(blob_str(&bIn), pikFlags,
fTh1 ? fThFlags : 0, &bOut);
if(isErr){
fossil_fatal("%s ERROR:%c%b", 1==isErr ? "TH1" : "pikchr",
1==isErr ? ' ' : '\n',
&bOut);
}else{
blob_write_to_file(&bOut, zOutfile);
}
Th_PrintTraceLog();
blob_reset(&bIn);
blob_reset(&bOut);
}