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exports the converter instead of Markdown

per #7 but done manually as that change included DOS-style carriage returns on every line.
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1 parent de33985 commit 319ccbcdc0d2d408a5ed55e264e0370726025b0c @coreyti coreyti committed May 27, 2012
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  1. +1,338 −1,338 src/showdown.js
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2,676 src/showdown.js
@@ -1,1338 +1,1338 @@
-//
-// showdown.js -- A javascript port of Markdown.
-//
-// Copyright (c) 2007 John Fraser.
-//
-// Original Markdown Copyright (c) 2004-2005 John Gruber
-// <http://daringfireball.net/projects/markdown/>
-//
-// Redistributable under a BSD-style open source license.
-// See license.txt for more information.
-//
-// The full source distribution is at:
-//
-// A A L
-// T C A
-// T K B
-//
-// <http://www.attacklab.net/>
-//
-
-//
-// Wherever possible, Showdown is a straight, line-by-line port
-// of the Perl version of Markdown.
-//
-// This is not a normal parser design; it's basically just a
-// series of string substitutions. It's hard to read and
-// maintain this way, but keeping Showdown close to the original
-// design makes it easier to port new features.
-//
-// More importantly, Showdown behaves like markdown.pl in most
-// edge cases. So web applications can do client-side preview
-// in Javascript, and then build identical HTML on the server.
-//
-// This port needs the new RegExp functionality of ECMA 262,
-// 3rd Edition (i.e. Javascript 1.5). Most modern web browsers
-// should do fine. Even with the new regular expression features,
-// We do a lot of work to emulate Perl's regex functionality.
-// The tricky changes in this file mostly have the "attacklab:"
-// label. Major or self-explanatory changes don't.
-//
-// Smart diff tools like Araxis Merge will be able to match up
-// this file with markdown.pl in a useful way. A little tweaking
-// helps: in a copy of markdown.pl, replace "#" with "//" and
-// replace "$text" with "text". Be sure to ignore whitespace
-// and line endings.
-//
-
-
-//
-// Showdown usage:
-//
-// var text = "Markdown *rocks*.";
-//
-// var converter = new Showdown.converter();
-// var html = converter.makeHtml(text);
-//
-// alert(html);
-//
-// Note: move the sample code to the bottom of this
-// file before uncommenting it.
-//
-
-
-//
-// Showdown namespace
-//
-var Showdown = {};
-
-//
-// converter
-//
-// Wraps all "globals" so that the only thing
-// exposed is makeHtml().
-//
-Showdown.converter = function() {
-
-//
-// Globals:
-//
-
-// Global hashes, used by various utility routines
-var g_urls;
-var g_titles;
-var g_html_blocks;
-
-// Used to track when we're inside an ordered or unordered list
-// (see _ProcessListItems() for details):
-var g_list_level = 0;
-
-
-this.makeHtml = function(text) {
-//
-// Main function. The order in which other subs are called here is
-// essential. Link and image substitutions need to happen before
-// _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the <a>
-// and <img> tags get encoded.
-//
-
- // Clear the global hashes. If we don't clear these, you get conflicts
- // from other articles when generating a page which contains more than
- // one article (e.g. an index page that shows the N most recent
- // articles):
- g_urls = new Array();
- g_titles = new Array();
- g_html_blocks = new Array();
-
- // attacklab: Replace ~ with ~T
- // This lets us use tilde as an escape char to avoid md5 hashes
- // The choice of character is arbitray; anything that isn't
- // magic in Markdown will work.
- text = text.replace(/~/g,"~T");
-
- // attacklab: Replace $ with ~D
- // RegExp interprets $ as a special character
- // when it's in a replacement string
- text = text.replace(/\$/g,"~D");
-
- // Standardize line endings
- text = text.replace(/\r\n/g,"\n"); // DOS to Unix
- text = text.replace(/\r/g,"\n"); // Mac to Unix
-
- // Make sure text begins and ends with a couple of newlines:
- text = "\n\n" + text + "\n\n";
-
- // Convert all tabs to spaces.
- text = _Detab(text);
-
- // Strip any lines consisting only of spaces and tabs.
- // This makes subsequent regexen easier to write, because we can
- // match consecutive blank lines with /\n+/ instead of something
- // contorted like /[ \t]*\n+/ .
- text = text.replace(/^[ \t]+$/mg,"");
-
- // Turn block-level HTML blocks into hash entries
- text = _HashHTMLBlocks(text);
-
- // Strip link definitions, store in hashes.
- text = _StripLinkDefinitions(text);
-
- text = _RunBlockGamut(text);
-
- text = _UnescapeSpecialChars(text);
-
- // attacklab: Restore dollar signs
- text = text.replace(/~D/g,"$$");
-
- // attacklab: Restore tildes
- text = text.replace(/~T/g,"~");
-
- return text;
-}
-
-
-var _StripLinkDefinitions = function(text) {
-//
-// Strips link definitions from text, stores the URLs and titles in
-// hash references.
-//
-
- // Link defs are in the form: ^[id]: url "optional title"
-
- /*
- var text = text.replace(/
- ^[ ]{0,3}\[(.+)\]: // id = $1 attacklab: g_tab_width - 1
- [ \t]*
- \n? // maybe *one* newline
- [ \t]*
- <?(\S+?)>? // url = $2
- [ \t]*
- \n? // maybe one newline
- [ \t]*
- (?:
- (\n*) // any lines skipped = $3 attacklab: lookbehind removed
- ["(]
- (.+?) // title = $4
- [")]
- [ \t]*
- )? // title is optional
- (?:\n+|$)
- /gm,
- function(){...});
- */
- var text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|\Z)/gm,
- function (wholeMatch,m1,m2,m3,m4) {
- m1 = m1.toLowerCase();
- g_urls[m1] = _EncodeAmpsAndAngles(m2); // Link IDs are case-insensitive
- if (m3) {
- // Oops, found blank lines, so it's not a title.
- // Put back the parenthetical statement we stole.
- return m3+m4;
- } else if (m4) {
- g_titles[m1] = m4.replace(/"/g,"&quot;");
- }
-
- // Completely remove the definition from the text
- return "";
- }
- );
-
- return text;
-}
-
-
-var _HashHTMLBlocks = function(text) {
- // attacklab: Double up blank lines to reduce lookaround
- text = text.replace(/\n/g,"\n\n");
-
- // Hashify HTML blocks:
- // We only want to do this for block-level HTML tags, such as headers,
- // lists, and tables. That's because we still want to wrap <p>s around
- // "paragraphs" that are wrapped in non-block-level tags, such as anchors,
- // phrase emphasis, and spans. The list of tags we're looking for is
- // hard-coded:
- var block_tags_a = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del"
- var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math"
-
- // First, look for nested blocks, e.g.:
- // <div>
- // <div>
- // tags for inner block must be indented.
- // </div>
- // </div>
- //
- // The outermost tags must start at the left margin for this to match, and
- // the inner nested divs must be indented.
- // We need to do this before the next, more liberal match, because the next
- // match will start at the first `<div>` and stop at the first `</div>`.
-
- // attacklab: This regex can be expensive when it fails.
- /*
- var text = text.replace(/
- ( // save in $1
- ^ // start of line (with /m)
- <($block_tags_a) // start tag = $2
- \b // word break
- // attacklab: hack around khtml/pcre bug...
- [^\r]*?\n // any number of lines, minimally matching
- </\2> // the matching end tag
- [ \t]* // trailing spaces/tabs
- (?=\n+) // followed by a newline
- ) // attacklab: there are sentinel newlines at end of document
- /gm,function(){...}};
- */
- text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,hashElement);
-
- //
- // Now match more liberally, simply from `\n<tag>` to `</tag>\n`
- //
-
- /*
- var text = text.replace(/
- ( // save in $1
- ^ // start of line (with /m)
- <($block_tags_b) // start tag = $2
- \b // word break
- // attacklab: hack around khtml/pcre bug...
- [^\r]*? // any number of lines, minimally matching
- .*</\2> // the matching end tag
- [ \t]* // trailing spaces/tabs
- (?=\n+) // followed by a newline
- ) // attacklab: there are sentinel newlines at end of document
- /gm,function(){...}};
- */
- text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm,hashElement);
-
- // Special case just for <hr />. It was easier to make a special case than
- // to make the other regex more complicated.
-
- /*
- text = text.replace(/
- ( // save in $1
- \n\n // Starting after a blank line
- [ ]{0,3}
- (<(hr) // start tag = $2
- \b // word break
- ([^<>])*? //
- \/?>) // the matching end tag
- [ \t]*
- (?=\n{2,}) // followed by a blank line
- )
- /g,hashElement);
- */
- text = text.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,hashElement);
-
- // Special case for standalone HTML comments:
-
- /*
- text = text.replace(/
- ( // save in $1
- \n\n // Starting after a blank line
- [ ]{0,3} // attacklab: g_tab_width - 1
- <!
- (--[^\r]*?--\s*)+
- >
- [ \t]*
- (?=\n{2,}) // followed by a blank line
- )
- /g,hashElement);
- */
- text = text.replace(/(\n\n[ ]{0,3}<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,hashElement);
-
- // PHP and ASP-style processor instructions (<?...?> and <%...%>)
-
- /*
- text = text.replace(/
- (?:
- \n\n // Starting after a blank line
- )
- ( // save in $1
- [ ]{0,3} // attacklab: g_tab_width - 1
- (?:
- <([?%]) // $2
- [^\r]*?
- \2>
- )
- [ \t]*
- (?=\n{2,}) // followed by a blank line
- )
- /g,hashElement);
- */
- text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,hashElement);
-
- // attacklab: Undo double lines (see comment at top of this function)
- text = text.replace(/\n\n/g,"\n");
- return text;
-}
-
-var hashElement = function(wholeMatch,m1) {
- var blockText = m1;
-
- // Undo double lines
- blockText = blockText.replace(/\n\n/g,"\n");
- blockText = blockText.replace(/^\n/,"");
-
- // strip trailing blank lines
- blockText = blockText.replace(/\n+$/g,"");
-
- // Replace the element text with a marker ("~KxK" where x is its key)
- blockText = "\n\n~K" + (g_html_blocks.push(blockText)-1) + "K\n\n";
-
- return blockText;
-};
-
-var _RunBlockGamut = function(text) {
-//
-// These are all the transformations that form block-level
-// tags like paragraphs, headers, and list items.
-//
- text = _DoHeaders(text);
-
- // Do Horizontal Rules:
- var key = hashBlock("<hr />");
- text = text.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm,key);
- text = text.replace(/^[ ]{0,2}([ ]?\-[ ]?){3,}[ \t]*$/gm,key);
- text = text.replace(/^[ ]{0,2}([ ]?\_[ ]?){3,}[ \t]*$/gm,key);
-
- text = _DoLists(text);
- text = _DoGithubCodeBlocks(text);
- text = _DoCodeBlocks(text);
- text = _DoBlockQuotes(text);
-
- // We already ran _HashHTMLBlocks() before, in Markdown(), but that
- // was to escape raw HTML in the original Markdown source. This time,
- // we're escaping the markup we've just created, so that we don't wrap
- // <p> tags around block-level tags.
- text = _HashHTMLBlocks(text);
- text = _FormParagraphs(text);
-
- return text;
-}
-
-
-var _RunSpanGamut = function(text) {
-//
-// These are all the transformations that occur *within* block-level
-// tags like paragraphs, headers, and list items.
-//
-
- text = _DoCodeSpans(text);
- text = _EscapeSpecialCharsWithinTagAttributes(text);
- text = _EncodeBackslashEscapes(text);
-
- // Process anchor and image tags. Images must come first,
- // because ![foo][f] looks like an anchor.
- text = _DoImages(text);
- text = _DoAnchors(text);
-
- // Make links out of things like `<http://example.com/>`
- // Must come after _DoAnchors(), because you can use < and >
- // delimiters in inline links like [this](<url>).
- text = _DoAutoLinks(text);
- text = _EncodeAmpsAndAngles(text);
- text = _DoItalicsAndBold(text);
-
- // Do hard breaks:
- text = text.replace(/ +\n/g," <br />\n");
-
- return text;
-}
-
-var _EscapeSpecialCharsWithinTagAttributes = function(text) {
-//
-// Within tags -- meaning between < and > -- encode [\ ` * _] so they
-// don't conflict with their use in Markdown for code, italics and strong.
-//
-
- // Build a regex to find HTML tags and comments. See Friedl's
- // "Mastering Regular Expressions", 2nd Ed., pp. 200-201.
- var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--.*?--\s*)+>)/gi;
-
- text = text.replace(regex, function(wholeMatch) {
- var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g,"$1`");
- tag = escapeCharacters(tag,"\\`*_");
- return tag;
- });
-
- return text;
-}
-
-var _DoAnchors = function(text) {
-//
-// Turn Markdown link shortcuts into XHTML <a> tags.
-//
- //
- // First, handle reference-style links: [link text] [id]
- //
-
- /*
- text = text.replace(/
- ( // wrap whole match in $1
- \[
- (
- (?:
- \[[^\]]*\] // allow brackets nested one level
- |
- [^\[] // or anything else
- )*
- )
- \]
-
- [ ]? // one optional space
- (?:\n[ ]*)? // one optional newline followed by spaces
-
- \[
- (.*?) // id = $3
- \]
- )()()()() // pad remaining backreferences
- /g,_DoAnchors_callback);
- */
- text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeAnchorTag);
-
- //
- // Next, inline-style links: [link text](url "optional title")
- //
-
- /*
- text = text.replace(/
- ( // wrap whole match in $1
- \[
- (
- (?:
- \[[^\]]*\] // allow brackets nested one level
- |
- [^\[\]] // or anything else
- )
- )
- \]
- \( // literal paren
- [ \t]*
- () // no id, so leave $3 empty
- <?(.*?)>? // href = $4
- [ \t]*
- ( // $5
- (['"]) // quote char = $6
- (.*?) // Title = $7
- \6 // matching quote
- [ \t]* // ignore any spaces/tabs between closing quote and )
- )? // title is optional
- \)
- )
- /g,writeAnchorTag);
- */
- text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()<?(.*?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeAnchorTag);
-
- //
- // Last, handle reference-style shortcuts: [link text]
- // These must come last in case you've also got [link test][1]
- // or [link test](/foo)
- //
-
- /*
- text = text.replace(/
- ( // wrap whole match in $1
- \[
- ([^\[\]]+) // link text = $2; can't contain '[' or ']'
- \]
- )()()()()() // pad rest of backreferences
- /g, writeAnchorTag);
- */
- text = text.replace(/(\[([^\[\]]+)\])()()()()()/g, writeAnchorTag);
-
- return text;
-}
-
-var writeAnchorTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
- if (m7 == undefined) m7 = "";
- var whole_match = m1;
- var link_text = m2;
- var link_id = m3.toLowerCase();
- var url = m4;
- var title = m7;
-
- if (url == "") {
- if (link_id == "") {
- // lower-case and turn embedded newlines into spaces
- link_id = link_text.toLowerCase().replace(/ ?\n/g," ");
- }
- url = "#"+link_id;
-
- if (g_urls[link_id] != undefined) {
- url = g_urls[link_id];
- if (g_titles[link_id] != undefined) {
- title = g_titles[link_id];
- }
- }
- else {
- if (whole_match.search(/\(\s*\)$/m)>-1) {
- // Special case for explicit empty url
- url = "";
- } else {
- return whole_match;
- }
- }
- }
-
- url = escapeCharacters(url,"*_");
- var result = "<a href=\"" + url + "\"";
-
- if (title != "") {
- title = title.replace(/"/g,"&quot;");
- title = escapeCharacters(title,"*_");
- result += " title=\"" + title + "\"";
- }
-
- result += ">" + link_text + "</a>";
-
- return result;
-}
-
-
-var _DoImages = function(text) {
-//
-// Turn Markdown image shortcuts into <img> tags.
-//
-
- //
- // First, handle reference-style labeled images: ![alt text][id]
- //
-
- /*
- text = text.replace(/
- ( // wrap whole match in $1
- !\[
- (.*?) // alt text = $2
- \]
-
- [ ]? // one optional space
- (?:\n[ ]*)? // one optional newline followed by spaces
-
- \[
- (.*?) // id = $3
- \]
- )()()()() // pad rest of backreferences
- /g,writeImageTag);
- */
- text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeImageTag);
-
- //
- // Next, handle inline images: ![alt text](url "optional title")
- // Don't forget: encode * and _
-
- /*
- text = text.replace(/
- ( // wrap whole match in $1
- !\[
- (.*?) // alt text = $2
- \]
- \s? // One optional whitespace character
- \( // literal paren
- [ \t]*
- () // no id, so leave $3 empty
- <?(\S+?)>? // src url = $4
- [ \t]*
- ( // $5
- (['"]) // quote char = $6
- (.*?) // title = $7
- \6 // matching quote
- [ \t]*
- )? // title is optional
- \)
- )
- /g,writeImageTag);
- */
- text = text.replace(/(!\[(.*?)\]\s?\([ \t]*()<?(\S+?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeImageTag);
-
- return text;
-}
-
-var writeImageTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
- var whole_match = m1;
- var alt_text = m2;
- var link_id = m3.toLowerCase();
- var url = m4;
- var title = m7;
-
- if (!title) title = "";
-
- if (url == "") {
- if (link_id == "") {
- // lower-case and turn embedded newlines into spaces
- link_id = alt_text.toLowerCase().replace(/ ?\n/g," ");
- }
- url = "#"+link_id;
-
- if (g_urls[link_id] != undefined) {
- url = g_urls[link_id];
- if (g_titles[link_id] != undefined) {
- title = g_titles[link_id];
- }
- }
- else {
- return whole_match;
- }
- }
-
- alt_text = alt_text.replace(/"/g,"&quot;");
- url = escapeCharacters(url,"*_");
- var result = "<img src=\"" + url + "\" alt=\"" + alt_text + "\"";
-
- // attacklab: Markdown.pl adds empty title attributes to images.
- // Replicate this bug.
-
- //if (title != "") {
- title = title.replace(/"/g,"&quot;");
- title = escapeCharacters(title,"*_");
- result += " title=\"" + title + "\"";
- //}
-
- result += " />";
-
- return result;
-}
-
-
-var _DoHeaders = function(text) {
-
- // Setext-style headers:
- // Header 1
- // ========
- //
- // Header 2
- // --------
- //
- text = text.replace(/^(.+)[ \t]*\n=+[ \t]*\n+/gm,
- function(wholeMatch,m1){return hashBlock('<h1 id="' + headerId(m1) + '">' + _RunSpanGamut(m1) + "</h1>");});
-
- text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,
- function(matchFound,m1){return hashBlock('<h2 id="' + headerId(m1) + '">' + _RunSpanGamut(m1) + "</h2>");});
-
- // atx-style headers:
- // # Header 1
- // ## Header 2
- // ## Header 2 with closing hashes ##
- // ...
- // ###### Header 6
- //
-
- /*
- text = text.replace(/
- ^(\#{1,6}) // $1 = string of #'s
- [ \t]*
- (.+?) // $2 = Header text
- [ \t]*
- \#* // optional closing #'s (not counted)
- \n+
- /gm, function() {...});
- */
-
- text = text.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm,
- function(wholeMatch,m1,m2) {
- var h_level = m1.length;
- return hashBlock("<h" + h_level + ' id="' + headerId(m2) + '">' + _RunSpanGamut(m2) + "</h" + h_level + ">");
- });
-
- function headerId(m) {
- return m.replace(/[^\w]/g, '').toLowerCase();
- }
- return text;
-}
-
-// This declaration keeps Dojo compressor from outputting garbage:
-var _ProcessListItems;
-
-var _DoLists = function(text) {
-//
-// Form HTML ordered (numbered) and unordered (bulleted) lists.
-//
-
- // attacklab: add sentinel to hack around khtml/safari bug:
- // http://bugs.webkit.org/show_bug.cgi?id=11231
- text += "~0";
-
- // Re-usable pattern to match any entirel ul or ol list:
-
- /*
- var whole_list = /
- ( // $1 = whole list
- ( // $2
- [ ]{0,3} // attacklab: g_tab_width - 1
- ([*+-]|\d+[.]) // $3 = first list item marker
- [ \t]+
- )
- [^\r]+?
- ( // $4
- ~0 // sentinel for workaround; should be $
- |
- \n{2,}
- (?=\S)
- (?! // Negative lookahead for another list item marker
- [ \t]*
- (?:[*+-]|\d+[.])[ \t]+
- )
- )
- )/g
- */
- var whole_list = /^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm;
-
- if (g_list_level) {
- text = text.replace(whole_list,function(wholeMatch,m1,m2) {
- var list = m1;
- var list_type = (m2.search(/[*+-]/g)>-1) ? "ul" : "ol";
-
- // Turn double returns into triple returns, so that we can make a
- // paragraph for the last item in a list, if necessary:
- list = list.replace(/\n{2,}/g,"\n\n\n");;
- var result = _ProcessListItems(list);
-
- // Trim any trailing whitespace, to put the closing `</$list_type>`
- // up on the preceding line, to get it past the current stupid
- // HTML block parser. This is a hack to work around the terrible
- // hack that is the HTML block parser.
- result = result.replace(/\s+$/,"");
- result = "<"+list_type+">" + result + "</"+list_type+">\n";
- return result;
- });
- } else {
- whole_list = /(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g;
- text = text.replace(whole_list,function(wholeMatch,m1,m2,m3) {
- var runup = m1;
- var list = m2;
-
- var list_type = (m3.search(/[*+-]/g)>-1) ? "ul" : "ol";
- // Turn double returns into triple returns, so that we can make a
- // paragraph for the last item in a list, if necessary:
- var list = list.replace(/\n{2,}/g,"\n\n\n");;
- var result = _ProcessListItems(list);
- result = runup + "<"+list_type+">\n" + result + "</"+list_type+">\n";
- return result;
- });
- }
-
- // attacklab: strip sentinel
- text = text.replace(/~0/,"");
-
- return text;
-}
-
-_ProcessListItems = function(list_str) {
-//
-// Process the contents of a single ordered or unordered list, splitting it
-// into individual list items.
-//
- // The $g_list_level global keeps track of when we're inside a list.
- // Each time we enter a list, we increment it; when we leave a list,
- // we decrement. If it's zero, we're not in a list anymore.
- //
- // We do this because when we're not inside a list, we want to treat
- // something like this:
- //
- // I recommend upgrading to version
- // 8. Oops, now this line is treated
- // as a sub-list.
- //
- // As a single paragraph, despite the fact that the second line starts
- // with a digit-period-space sequence.
- //
- // Whereas when we're inside a list (or sub-list), that line will be
- // treated as the start of a sub-list. What a kludge, huh? This is
- // an aspect of Markdown's syntax that's hard to parse perfectly
- // without resorting to mind-reading. Perhaps the solution is to
- // change the syntax rules such that sub-lists must start with a
- // starting cardinal number; e.g. "1." or "a.".
-
- g_list_level++;
-
- // trim trailing blank lines:
- list_str = list_str.replace(/\n{2,}$/,"\n");
-
- // attacklab: add sentinel to emulate \z
- list_str += "~0";
-
- /*
- list_str = list_str.replace(/
- (\n)? // leading line = $1
- (^[ \t]*) // leading whitespace = $2
- ([*+-]|\d+[.]) [ \t]+ // list marker = $3
- ([^\r]+? // list item text = $4
- (\n{1,2}))
- (?= \n* (~0 | \2 ([*+-]|\d+[.]) [ \t]+))
- /gm, function(){...});
- */
- list_str = list_str.replace(/(\n)?(^[ \t]*)([*+-]|\d+[.])[ \t]+([^\r]+?(\n{1,2}))(?=\n*(~0|\2([*+-]|\d+[.])[ \t]+))/gm,
- function(wholeMatch,m1,m2,m3,m4){
- var item = m4;
- var leading_line = m1;
- var leading_space = m2;
-
- if (leading_line || (item.search(/\n{2,}/)>-1)) {
- item = _RunBlockGamut(_Outdent(item));
- }
- else {
- // Recursion for sub-lists:
- item = _DoLists(_Outdent(item));
- item = item.replace(/\n$/,""); // chomp(item)
- item = _RunSpanGamut(item);
- }
-
- return "<li>" + item + "</li>\n";
- }
- );
-
- // attacklab: strip sentinel
- list_str = list_str.replace(/~0/g,"");
-
- g_list_level--;
- return list_str;
-}
-
-
-var _DoCodeBlocks = function(text) {
-//
-// Process Markdown `<pre><code>` blocks.
-//
-
- /*
- text = text.replace(text,
- /(?:\n\n|^)
- ( // $1 = the code block -- one or more lines, starting with a space/tab
- (?:
- (?:[ ]{4}|\t) // Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
- .*\n+
- )+
- )
- (\n*[ ]{0,3}[^ \t\n]|(?=~0)) // attacklab: g_tab_width
- /g,function(){...});
- */
-
- // attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
- text += "~0";
-
- text = text.replace(/(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,
- function(wholeMatch,m1,m2) {
- var codeblock = m1;
- var nextChar = m2;
-
- codeblock = _EncodeCode( _Outdent(codeblock));
- codeblock = _Detab(codeblock);
- codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines
- codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace
-
- codeblock = "<pre><code>" + codeblock + "\n</code></pre>";
-
- return hashBlock(codeblock) + nextChar;
- }
- );
-
- // attacklab: strip sentinel
- text = text.replace(/~0/,"");
-
- return text;
-}
-
-var _DoGithubCodeBlocks = function(text) {
-//
-// Process Github-style code blocks
-// Example:
-// ```ruby
-// def hello_world(x)
-// puts "Hello, #{x}"
-// end
-// ```
-//
-
-
- // attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
- text += "~0";
-
- text = text.replace(/\n```(.*)\n([^`]+)\n```/g,
- function(wholeMatch,m1,m2) {
- var language = m1;
- var codeblock = m2;
-
- codeblock = _EncodeCode(codeblock);
- codeblock = _Detab(codeblock);
- codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines
- codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace
-
- codeblock = "<pre><code class=" + language + ">" + codeblock + "\n</code></pre>";
-
- return hashBlock(codeblock);
- }
- );
-
- // attacklab: strip sentinel
- text = text.replace(/~0/,"");
-
- return text;
-}
-
-var hashBlock = function(text) {
- text = text.replace(/(^\n+|\n+$)/g,"");
- return "\n\n~K" + (g_html_blocks.push(text)-1) + "K\n\n";
-}
-
-var _DoCodeSpans = function(text) {
-//
-// * Backtick quotes are used for <code></code> spans.
-//
-// * You can use multiple backticks as the delimiters if you want to
-// include literal backticks in the code span. So, this input:
-//
-// Just type ``foo `bar` baz`` at the prompt.
-//
-// Will translate to:
-//
-// <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
-//
-// There's no arbitrary limit to the number of backticks you
-// can use as delimters. If you need three consecutive backticks
-// in your code, use four for delimiters, etc.
-//
-// * You can use spaces to get literal backticks at the edges:
-//
-// ... type `` `bar` `` ...
-//
-// Turns to:
-//
-// ... type <code>`bar`</code> ...
-//
-
- /*
- text = text.replace(/
- (^|[^\\]) // Character before opening ` can't be a backslash
- (`+) // $2 = Opening run of `
- ( // $3 = The code block
- [^\r]*?
- [^`] // attacklab: work around lack of lookbehind
- )
- \2 // Matching closer
- (?!`)
- /gm, function(){...});
- */
-
- text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
- function(wholeMatch,m1,m2,m3,m4) {
- var c = m3;
- c = c.replace(/^([ \t]*)/g,""); // leading whitespace
- c = c.replace(/[ \t]*$/g,""); // trailing whitespace
- c = _EncodeCode(c);
- return m1+"<code>"+c+"</code>";
- });
-
- return text;
-}
-
-var _EncodeCode = function(text) {
-//
-// Encode/escape certain characters inside Markdown code runs.
-// The point is that in code, these characters are literals,
-// and lose their special Markdown meanings.
-//
- // Encode all ampersands; HTML entities are not
- // entities within a Markdown code span.
- text = text.replace(/&/g,"&amp;");
-
- // Do the angle bracket song and dance:
- text = text.replace(/</g,"&lt;");
- text = text.replace(/>/g,"&gt;");
-
- // Now, escape characters that are magic in Markdown:
- text = escapeCharacters(text,"\*_{}[]\\",false);
-
-// jj the line above breaks this:
-//---
-
-//* Item
-
-// 1. Subitem
-
-// special char: *
-//---
-
- return text;
-}
-
-
-var _DoItalicsAndBold = function(text) {
-
- // <strong> must go first:
- text = text.replace(/(\*\*|__)(?=\S)([^\r]*?\S[*_]*)\1/g,
- "<strong>$2</strong>");
-
- text = text.replace(/(\*|_)(?=\S)([^\r]*?\S)\1/g,
- "<em>$2</em>");
-
- return text;
-}
-
-
-var _DoBlockQuotes = function(text) {
-
- /*
- text = text.replace(/
- ( // Wrap whole match in $1
- (
- ^[ \t]*>[ \t]? // '>' at the start of a line
- .+\n // rest of the first line
- (.+\n)* // subsequent consecutive lines
- \n* // blanks
- )+
- )
- /gm, function(){...});
- */
-
- text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,
- function(wholeMatch,m1) {
- var bq = m1;
-
- // attacklab: hack around Konqueror 3.5.4 bug:
- // "----------bug".replace(/^-/g,"") == "bug"
-
- bq = bq.replace(/^[ \t]*>[ \t]?/gm,"~0"); // trim one level of quoting
-
- // attacklab: clean up hack
- bq = bq.replace(/~0/g,"");
-
- bq = bq.replace(/^[ \t]+$/gm,""); // trim whitespace-only lines
- bq = _RunBlockGamut(bq); // recurse
-
- bq = bq.replace(/(^|\n)/g,"$1 ");
- // These leading spaces screw with <pre> content, so we need to fix that:
- bq = bq.replace(
- /(\s*<pre>[^\r]+?<\/pre>)/gm,
- function(wholeMatch,m1) {
- var pre = m1;
- // attacklab: hack around Konqueror 3.5.4 bug:
- pre = pre.replace(/^ /mg,"~0");
- pre = pre.replace(/~0/g,"");
- return pre;
- });
-
- return hashBlock("<blockquote>\n" + bq + "\n</blockquote>");
- });
- return text;
-}
-
-
-var _FormParagraphs = function(text) {
-//
-// Params:
-// $text - string to process with html <p> tags
-//
-
- // Strip leading and trailing lines:
- text = text.replace(/^\n+/g,"");
- text = text.replace(/\n+$/g,"");
-
- var grafs = text.split(/\n{2,}/g);
- var grafsOut = new Array();
-
- //
- // Wrap <p> tags.
- //
- var end = grafs.length;
- for (var i=0; i<end; i++) {
- var str = grafs[i];
-
- // if this is an HTML marker, copy it
- if (str.search(/~K(\d+)K/g) >= 0) {
- grafsOut.push(str);
- }
- else if (str.search(/\S/) >= 0) {
- str = _RunSpanGamut(str);
- str = str.replace(/^([ \t]*)/g,"<p>");
- str += "</p>"
- grafsOut.push(str);
- }
-
- }
-
- //
- // Unhashify HTML blocks
- //
- end = grafsOut.length;
- for (var i=0; i<end; i++) {
- // if this is a marker for an html block...
- while (grafsOut[i].search(/~K(\d+)K/) >= 0) {
- var blockText = g_html_blocks[RegExp.$1];
- blockText = blockText.replace(/\$/g,"$$$$"); // Escape any dollar signs
- grafsOut[i] = grafsOut[i].replace(/~K\d+K/,blockText);
- }
- }
-
- return grafsOut.join("\n\n");
-}
-
-
-var _EncodeAmpsAndAngles = function(text) {
-// Smart processing for ampersands and angle brackets that need to be encoded.
-
- // Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
- // http://bumppo.net/projects/amputator/
- text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g,"&amp;");
-
- // Encode naked <'s
- text = text.replace(/<(?![a-z\/?\$!])/gi,"&lt;");
-
- return text;
-}
-
-
-var _EncodeBackslashEscapes = function(text) {
-//
-// Parameter: String.
-// Returns: The string, with after processing the following backslash
-// escape sequences.
-//
-
- // attacklab: The polite way to do this is with the new
- // escapeCharacters() function:
- //
- // text = escapeCharacters(text,"\\",true);
- // text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
- //
- // ...but we're sidestepping its use of the (slow) RegExp constructor
- // as an optimization for Firefox. This function gets called a LOT.
-
- text = text.replace(/\\(\\)/g,escapeCharacters_callback);
- text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g,escapeCharacters_callback);
- return text;
-}
-
-
-var _DoAutoLinks = function(text) {
-
- text = text.replace(/<((https?|ftp|dict):[^'">\s]+)>/gi,"<a href=\"$1\">$1</a>");
-
- // Email addresses: <address@domain.foo>
-
- /*
- text = text.replace(/
- <
- (?:mailto:)?
- (
- [-.\w]+
- \@
- [-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
- )
- >
- /gi, _DoAutoLinks_callback());
- */
- text = text.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
- function(wholeMatch,m1) {
- return _EncodeEmailAddress( _UnescapeSpecialChars(m1) );
- }
- );
-
- return text;
-}
-
-
-var _EncodeEmailAddress = function(addr) {
-//
-// Input: an email address, e.g. "foo@example.com"
-//
-// Output: the email address as a mailto link, with each character
-// of the address encoded as either a decimal or hex entity, in
-// the hopes of foiling most address harvesting spam bots. E.g.:
-//
-// <a href="&#x6D;&#97;&#105;&#108;&#x74;&#111;:&#102;&#111;&#111;&#64;&#101;
-// x&#x61;&#109;&#x70;&#108;&#x65;&#x2E;&#99;&#111;&#109;">&#102;&#111;&#111;
-// &#64;&#101;x&#x61;&#109;&#x70;&#108;&#x65;&#x2E;&#99;&#111;&#109;</a>
-//
-// Based on a filter by Matthew Wickline, posted to the BBEdit-Talk
-// mailing list: <http://tinyurl.com/yu7ue>
-//
-
- // attacklab: why can't javascript speak hex?
- function char2hex(ch) {
- var hexDigits = '0123456789ABCDEF';
- var dec = ch.charCodeAt(0);
- return(hexDigits.charAt(dec>>4) + hexDigits.charAt(dec&15));
- }
-
- var encode = [
- function(ch){return "&#"+ch.charCodeAt(0)+";";},
- function(ch){return "&#x"+char2hex(ch)+";";},
- function(ch){return ch;}
- ];
-
- addr = "mailto:" + addr;
-
- addr = addr.replace(/./g, function(ch) {
- if (ch == "@") {
- // this *must* be encoded. I insist.
- ch = encode[Math.floor(Math.random()*2)](ch);
- } else if (ch !=":") {
- // leave ':' alone (to spot mailto: later)
- var r = Math.random();
- // roughly 10% raw, 45% hex, 45% dec
- ch = (
- r > .9 ? encode[2](ch) :
- r > .45 ? encode[1](ch) :
- encode[0](ch)
- );
- }
- return ch;
- });
-
- addr = "<a href=\"" + addr + "\">" + addr + "</a>";
- addr = addr.replace(/">.+:/g,"\">"); // strip the mailto: from the visible part
-
- return addr;
-}
-
-
-var _UnescapeSpecialChars = function(text) {
-//
-// Swap back in all the special characters we've hidden.
-//
- text = text.replace(/~E(\d+)E/g,
- function(wholeMatch,m1) {
- var charCodeToReplace = parseInt(m1);
- return String.fromCharCode(charCodeToReplace);
- }
- );
- return text;
-}
-
-
-var _Outdent = function(text) {
-//
-// Remove one level of line-leading tabs or spaces
-//
-
- // attacklab: hack around Konqueror 3.5.4 bug:
- // "----------bug".replace(/^-/g,"") == "bug"
-
- text = text.replace(/^(\t|[ ]{1,4})/gm,"~0"); // attacklab: g_tab_width
-
- // attacklab: clean up hack
- text = text.replace(/~0/g,"")
-
- return text;
-}
-
-var _Detab = function(text) {
-// attacklab: Detab's completely rewritten for speed.
-// In perl we could fix it by anchoring the regexp with \G.
-// In javascript we're less fortunate.
-
- // expand first n-1 tabs
- text = text.replace(/\t(?=\t)/g," "); // attacklab: g_tab_width
-
- // replace the nth with two sentinels
- text = text.replace(/\t/g,"~A~B");
-
- // use the sentinel to anchor our regex so it doesn't explode
- text = text.replace(/~B(.+?)~A/g,
- function(wholeMatch,m1,m2) {
- var leadingText = m1;
- var numSpaces = 4 - leadingText.length % 4; // attacklab: g_tab_width
-
- // there *must* be a better way to do this:
- for (var i=0; i<numSpaces; i++) leadingText+=" ";
-
- return leadingText;
- }
- );
-
- // clean up sentinels
- text = text.replace(/~A/g," "); // attacklab: g_tab_width
- text = text.replace(/~B/g,"");
-
- return text;
-}
-
-
-//
-// attacklab: Utility functions
-//
-
-
-var escapeCharacters = function(text, charsToEscape, afterBackslash) {
- // First we have to escape the escape characters so that
- // we can build a character class out of them
- var regexString = "([" + charsToEscape.replace(/([\[\]\\])/g,"\\$1") + "])";
-
- if (afterBackslash) {
- regexString = "\\\\" + regexString;
- }
-
- var regex = new RegExp(regexString,"g");
- text = text.replace(regex,escapeCharacters_callback);
-
- return text;
-}
-
-
-var escapeCharacters_callback = function(wholeMatch,m1) {
- var charCodeToEscape = m1.charCodeAt(0);
- return "~E"+charCodeToEscape+"E";
-}
-
-} // end of Showdown.converter
-
-// export
-if (typeof exports != 'undefined') exports.Showdown = Showdown;
+//
+// showdown.js -- A javascript port of Markdown.
+//
+// Copyright (c) 2007 John Fraser.
+//
+// Original Markdown Copyright (c) 2004-2005 John Gruber
+// <http://daringfireball.net/projects/markdown/>
+//
+// Redistributable under a BSD-style open source license.
+// See license.txt for more information.
+//
+// The full source distribution is at:
+//
+// A A L
+// T C A
+// T K B
+//
+// <http://www.attacklab.net/>
+//
+
+//
+// Wherever possible, Showdown is a straight, line-by-line port
+// of the Perl version of Markdown.
+//
+// This is not a normal parser design; it's basically just a
+// series of string substitutions. It's hard to read and
+// maintain this way, but keeping Showdown close to the original
+// design makes it easier to port new features.
+//
+// More importantly, Showdown behaves like markdown.pl in most
+// edge cases. So web applications can do client-side preview
+// in Javascript, and then build identical HTML on the server.
+//
+// This port needs the new RegExp functionality of ECMA 262,
+// 3rd Edition (i.e. Javascript 1.5). Most modern web browsers
+// should do fine. Even with the new regular expression features,
+// We do a lot of work to emulate Perl's regex functionality.
+// The tricky changes in this file mostly have the "attacklab:"
+// label. Major or self-explanatory changes don't.
+//
+// Smart diff tools like Araxis Merge will be able to match up
+// this file with markdown.pl in a useful way. A little tweaking
+// helps: in a copy of markdown.pl, replace "#" with "//" and
+// replace "$text" with "text". Be sure to ignore whitespace
+// and line endings.
+//
+
+
+//
+// Showdown usage:
+//
+// var text = "Markdown *rocks*.";
+//
+// var converter = new Showdown.converter();
+// var html = converter.makeHtml(text);
+//
+// alert(html);
+//
+// Note: move the sample code to the bottom of this
+// file before uncommenting it.
+//
+
+
+//
+// Showdown namespace
+//
+var Showdown = {};
+
+//
+// converter
+//
+// Wraps all "globals" so that the only thing
+// exposed is makeHtml().
+//
+Showdown.converter = function() {
+
+//
+// Globals:
+//
+
+// Global hashes, used by various utility routines
+var g_urls;
+var g_titles;
+var g_html_blocks;
+
+// Used to track when we're inside an ordered or unordered list
+// (see _ProcessListItems() for details):
+var g_list_level = 0;
+
+
+this.makeHtml = function(text) {
+//
+// Main function. The order in which other subs are called here is
+// essential. Link and image substitutions need to happen before
+// _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the <a>
+// and <img> tags get encoded.
+//
+
+ // Clear the global hashes. If we don't clear these, you get conflicts
+ // from other articles when generating a page which contains more than
+ // one article (e.g. an index page that shows the N most recent
+ // articles):
+ g_urls = new Array();
+ g_titles = new Array();
+ g_html_blocks = new Array();
+
+ // attacklab: Replace ~ with ~T
+ // This lets us use tilde as an escape char to avoid md5 hashes
+ // The choice of character is arbitray; anything that isn't
+ // magic in Markdown will work.
+ text = text.replace(/~/g,"~T");
+
+ // attacklab: Replace $ with ~D
+ // RegExp interprets $ as a special character
+ // when it's in a replacement string
+ text = text.replace(/\$/g,"~D");
+
+ // Standardize line endings
+ text = text.replace(/\r\n/g,"\n"); // DOS to Unix
+ text = text.replace(/\r/g,"\n"); // Mac to Unix
+
+ // Make sure text begins and ends with a couple of newlines:
+ text = "\n\n" + text + "\n\n";
+
+ // Convert all tabs to spaces.
+ text = _Detab(text);
+
+ // Strip any lines consisting only of spaces and tabs.
+ // This makes subsequent regexen easier to write, because we can
+ // match consecutive blank lines with /\n+/ instead of something
+ // contorted like /[ \t]*\n+/ .
+ text = text.replace(/^[ \t]+$/mg,"");
+
+ // Turn block-level HTML blocks into hash entries
+ text = _HashHTMLBlocks(text);
+
+ // Strip link definitions, store in hashes.
+ text = _StripLinkDefinitions(text);
+
+ text = _RunBlockGamut(text);
+
+ text = _UnescapeSpecialChars(text);
+
+ // attacklab: Restore dollar signs
+ text = text.replace(/~D/g,"$$");
+
+ // attacklab: Restore tildes
+ text = text.replace(/~T/g,"~");
+
+ return text;
+}
+
+
+var _StripLinkDefinitions = function(text) {
+//
+// Strips link definitions from text, stores the URLs and titles in
+// hash references.
+//
+
+ // Link defs are in the form: ^[id]: url "optional title"
+
+ /*
+ var text = text.replace(/
+ ^[ ]{0,3}\[(.+)\]: // id = $1 attacklab: g_tab_width - 1
+ [ \t]*
+ \n? // maybe *one* newline
+ [ \t]*
+ <?(\S+?)>? // url = $2
+ [ \t]*
+ \n? // maybe one newline
+ [ \t]*
+ (?:
+ (\n*) // any lines skipped = $3 attacklab: lookbehind removed
+ ["(]
+ (.+?) // title = $4
+ [")]
+ [ \t]*
+ )? // title is optional
+ (?:\n+|$)
+ /gm,
+ function(){...});
+ */
+ var text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|\Z)/gm,
+ function (wholeMatch,m1,m2,m3,m4) {
+ m1 = m1.toLowerCase();
+ g_urls[m1] = _EncodeAmpsAndAngles(m2); // Link IDs are case-insensitive
+ if (m3) {
+ // Oops, found blank lines, so it's not a title.
+ // Put back the parenthetical statement we stole.
+ return m3+m4;
+ } else if (m4) {
+ g_titles[m1] = m4.replace(/"/g,"&quot;");
+ }
+
+ // Completely remove the definition from the text
+ return "";
+ }
+ );
+
+ return text;
+}
+
+
+var _HashHTMLBlocks = function(text) {
+ // attacklab: Double up blank lines to reduce lookaround
+ text = text.replace(/\n/g,"\n\n");
+
+ // Hashify HTML blocks:
+ // We only want to do this for block-level HTML tags, such as headers,
+ // lists, and tables. That's because we still want to wrap <p>s around
+ // "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+ // phrase emphasis, and spans. The list of tags we're looking for is
+ // hard-coded:
+ var block_tags_a = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del"
+ var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math"
+
+ // First, look for nested blocks, e.g.:
+ // <div>
+ // <div>
+ // tags for inner block must be indented.
+ // </div>
+ // </div>
+ //
+ // The outermost tags must start at the left margin for this to match, and
+ // the inner nested divs must be indented.
+ // We need to do this before the next, more liberal match, because the next
+ // match will start at the first `<div>` and stop at the first `</div>`.
+
+ // attacklab: This regex can be expensive when it fails.
+ /*
+ var text = text.replace(/
+ ( // save in $1
+ ^ // start of line (with /m)
+ <($block_tags_a) // start tag = $2
+ \b // word break
+ // attacklab: hack around khtml/pcre bug...
+ [^\r]*?\n // any number of lines, minimally matching
+ </\2> // the matching end tag
+ [ \t]* // trailing spaces/tabs
+ (?=\n+) // followed by a newline
+ ) // attacklab: there are sentinel newlines at end of document
+ /gm,function(){...}};
+ */
+ text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,hashElement);
+
+ //
+ // Now match more liberally, simply from `\n<tag>` to `</tag>\n`
+ //
+
+ /*
+ var text = text.replace(/
+ ( // save in $1
+ ^ // start of line (with /m)
+ <($block_tags_b) // start tag = $2
+ \b // word break
+ // attacklab: hack around khtml/pcre bug...
+ [^\r]*? // any number of lines, minimally matching
+ .*</\2> // the matching end tag
+ [ \t]* // trailing spaces/tabs
+ (?=\n+) // followed by a newline
+ ) // attacklab: there are sentinel newlines at end of document
+ /gm,function(){...}};
+ */
+ text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm,hashElement);
+
+ // Special case just for <hr />. It was easier to make a special case than
+ // to make the other regex more complicated.
+
+ /*
+ text = text.replace(/
+ ( // save in $1
+ \n\n // Starting after a blank line
+ [ ]{0,3}
+ (<(hr) // start tag = $2
+ \b // word break
+ ([^<>])*? //
+ \/?>) // the matching end tag
+ [ \t]*
+ (?=\n{2,}) // followed by a blank line
+ )
+ /g,hashElement);
+ */
+ text = text.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,hashElement);
+
+ // Special case for standalone HTML comments:
+
+ /*
+ text = text.replace(/
+ ( // save in $1
+ \n\n // Starting after a blank line
+ [ ]{0,3} // attacklab: g_tab_width - 1
+ <!
+ (--[^\r]*?--\s*)+
+ >
+ [ \t]*
+ (?=\n{2,}) // followed by a blank line
+ )
+ /g,hashElement);
+ */
+ text = text.replace(/(\n\n[ ]{0,3}<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,hashElement);
+
+ // PHP and ASP-style processor instructions (<?...?> and <%...%>)
+
+ /*
+ text = text.replace(/
+ (?:
+ \n\n // Starting after a blank line
+ )
+ ( // save in $1
+ [ ]{0,3} // attacklab: g_tab_width - 1
+ (?:
+ <([?%]) // $2
+ [^\r]*?
+ \2>
+ )
+ [ \t]*
+ (?=\n{2,}) // followed by a blank line
+ )
+ /g,hashElement);
+ */
+ text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,hashElement);
+
+ // attacklab: Undo double lines (see comment at top of this function)
+ text = text.replace(/\n\n/g,"\n");
+ return text;
+}
+
+var hashElement = function(wholeMatch,m1) {
+ var blockText = m1;
+
+ // Undo double lines
+ blockText = blockText.replace(/\n\n/g,"\n");
+ blockText = blockText.replace(/^\n/,"");
+
+ // strip trailing blank lines
+ blockText = blockText.replace(/\n+$/g,"");
+
+ // Replace the element text with a marker ("~KxK" where x is its key)
+ blockText = "\n\n~K" + (g_html_blocks.push(blockText)-1) + "K\n\n";
+
+ return blockText;
+};
+
+var _RunBlockGamut = function(text) {
+//
+// These are all the transformations that form block-level
+// tags like paragraphs, headers, and list items.
+//
+ text = _DoHeaders(text);
+
+ // Do Horizontal Rules:
+ var key = hashBlock("<hr />");
+ text = text.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm,key);
+ text = text.replace(/^[ ]{0,2}([ ]?\-[ ]?){3,}[ \t]*$/gm,key);
+ text = text.replace(/^[ ]{0,2}([ ]?\_[ ]?){3,}[ \t]*$/gm,key);
+
+ text = _DoLists(text);
+ text = _DoGithubCodeBlocks(text);
+ text = _DoCodeBlocks(text);
+ text = _DoBlockQuotes(text);
+
+ // We already ran _HashHTMLBlocks() before, in Markdown(), but that
+ // was to escape raw HTML in the original Markdown source. This time,
+ // we're escaping the markup we've just created, so that we don't wrap
+ // <p> tags around block-level tags.
+ text = _HashHTMLBlocks(text);
+ text = _FormParagraphs(text);
+
+ return text;
+}
+
+
+var _RunSpanGamut = function(text) {
+//
+// These are all the transformations that occur *within* block-level
+// tags like paragraphs, headers, and list items.
+//
+
+ text = _DoCodeSpans(text);
+ text = _EscapeSpecialCharsWithinTagAttributes(text);
+ text = _EncodeBackslashEscapes(text);
+
+ // Process anchor and image tags. Images must come first,
+ // because ![foo][f] looks like an anchor.
+ text = _DoImages(text);
+ text = _DoAnchors(text);
+
+ // Make links out of things like `<http://example.com/>`
+ // Must come after _DoAnchors(), because you can use < and >
+ // delimiters in inline links like [this](<url>).
+ text = _DoAutoLinks(text);
+ text = _EncodeAmpsAndAngles(text);
+ text = _DoItalicsAndBold(text);
+
+ // Do hard breaks:
+ text = text.replace(/ +\n/g," <br />\n");
+
+ return text;
+}
+
+var _EscapeSpecialCharsWithinTagAttributes = function(text) {
+//
+// Within tags -- meaning between < and > -- encode [\ ` * _] so they
+// don't conflict with their use in Markdown for code, italics and strong.
+//
+
+ // Build a regex to find HTML tags and comments. See Friedl's
+ // "Mastering Regular Expressions", 2nd Ed., pp. 200-201.
+ var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--.*?--\s*)+>)/gi;
+
+ text = text.replace(regex, function(wholeMatch) {
+ var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g,"$1`");
+ tag = escapeCharacters(tag,"\\`*_");
+ return tag;
+ });
+
+ return text;
+}
+
+var _DoAnchors = function(text) {
+//
+// Turn Markdown link shortcuts into XHTML <a> tags.
+//
+ //
+ // First, handle reference-style links: [link text] [id]
+ //
+
+ /*
+ text = text.replace(/
+ ( // wrap whole match in $1
+ \[
+ (
+ (?:
+ \[[^\]]*\] // allow brackets nested one level
+ |
+ [^\[] // or anything else
+ )*
+ )
+ \]
+
+ [ ]? // one optional space
+ (?:\n[ ]*)? // one optional newline followed by spaces
+
+ \[
+ (.*?) // id = $3
+ \]
+ )()()()() // pad remaining backreferences
+ /g,_DoAnchors_callback);
+ */
+ text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeAnchorTag);
+
+ //
+ // Next, inline-style links: [link text](url "optional title")
+ //
+
+ /*
+ text = text.replace(/
+ ( // wrap whole match in $1
+ \[
+ (
+ (?:
+ \[[^\]]*\] // allow brackets nested one level
+ |
+ [^\[\]] // or anything else
+ )
+ )
+ \]
+ \( // literal paren
+ [ \t]*
+ () // no id, so leave $3 empty
+ <?(.*?)>? // href = $4
+ [ \t]*
+ ( // $5
+ (['"]) // quote char = $6
+ (.*?) // Title = $7
+ \6 // matching quote
+ [ \t]* // ignore any spaces/tabs between closing quote and )
+ )? // title is optional
+ \)
+ )
+ /g,writeAnchorTag);
+ */
+ text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()<?(.*?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeAnchorTag);
+
+ //
+ // Last, handle reference-style shortcuts: [link text]
+ // These must come last in case you've also got [link test][1]
+ // or [link test](/foo)
+ //
+
+ /*
+ text = text.replace(/
+ ( // wrap whole match in $1
+ \[
+ ([^\[\]]+) // link text = $2; can't contain '[' or ']'
+ \]
+ )()()()()() // pad rest of backreferences
+ /g, writeAnchorTag);
+ */
+ text = text.replace(/(\[([^\[\]]+)\])()()()()()/g, writeAnchorTag);
+
+ return text;
+}
+
+var writeAnchorTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
+ if (m7 == undefined) m7 = "";
+ var whole_match = m1;
+ var link_text = m2;
+ var link_id = m3.toLowerCase();
+ var url = m4;
+ var title = m7;
+
+ if (url == "") {
+ if (link_id == "") {
+ // lower-case and turn embedded newlines into spaces
+ link_id = link_text.toLowerCase().replace(/ ?\n/g," ");
+ }
+ url = "#"+link_id;
+
+ if (g_urls[link_id] != undefined) {
+ url = g_urls[link_id];
+ if (g_titles[link_id] != undefined) {
+ title = g_titles[link_id];
+ }
+ }
+ else {
+ if (whole_match.search(/\(\s*\)$/m)>-1) {
+ // Special case for explicit empty url
+ url = "";
+ } else {
+ return whole_match;
+ }
+ }
+ }
+
+ url = escapeCharacters(url,"*_");
+ var result = "<a href=\"" + url + "\"";
+
+ if (title != "") {
+ title = title.replace(/"/g,"&quot;");
+ title = escapeCharacters(title,"*_");
+ result += " title=\"" + title + "\"";
+ }
+
+ result += ">" + link_text + "</a>";
+
+ return result;
+}
+
+
+var _DoImages = function(text) {
+//
+// Turn Markdown image shortcuts into <img> tags.
+//
+
+ //
+ // First, handle reference-style labeled images: ![alt text][id]
+ //
+
+ /*
+ text = text.replace(/
+ ( // wrap whole match in $1
+ !\[
+ (.*?) // alt text = $2
+ \]
+
+ [ ]? // one optional space
+ (?:\n[ ]*)? // one optional newline followed by spaces
+
+ \[
+ (.*?) // id = $3
+ \]
+ )()()()() // pad rest of backreferences
+ /g,writeImageTag);
+ */
+ text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeImageTag);
+
+ //
+ // Next, handle inline images: ![alt text](url "optional title")
+ // Don't forget: encode * and _
+
+ /*
+ text = text.replace(/
+ ( // wrap whole match in $1
+ !\[
+ (.*?) // alt text = $2
+ \]
+ \s? // One optional whitespace character
+ \( // literal paren
+ [ \t]*
+ () // no id, so leave $3 empty
+ <?(\S+?)>? // src url = $4
+ [ \t]*
+ ( // $5
+ (['"]) // quote char = $6
+ (.*?) // title = $7
+ \6 // matching quote
+ [ \t]*
+ )? // title is optional
+ \)
+ )
+ /g,writeImageTag);
+ */
+ text = text.replace(/(!\[(.*?)\]\s?\([ \t]*()<?(\S+?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeImageTag);
+
+ return text;
+}
+
+var writeImageTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
+ var whole_match = m1;
+ var alt_text = m2;
+ var link_id = m3.toLowerCase();
+ var url = m4;
+ var title = m7;
+
+ if (!title) title = "";
+
+ if (url == "") {
+ if (link_id == "") {
+ // lower-case and turn embedded newlines into spaces
+ link_id = alt_text.toLowerCase().replace(/ ?\n/g," ");
+ }
+ url = "#"+link_id;
+
+ if (g_urls[link_id] != undefined) {
+ url = g_urls[link_id];
+ if (g_titles[link_id] != undefined) {
+ title = g_titles[link_id];
+ }
+ }
+ else {
+ return whole_match;
+ }
+ }
+
+ alt_text = alt_text.replace(/"/g,"&quot;");
+ url = escapeCharacters(url,"*_");
+ var result = "<img src=\"" + url + "\" alt=\"" + alt_text + "\"";
+
+ // attacklab: Markdown.pl adds empty title attributes to images.
+ // Replicate this bug.
+
+ //if (title != "") {
+ title = title.replace(/"/g,"&quot;");
+ title = escapeCharacters(title,"*_");
+ result += " title=\"" + title + "\"";
+ //}
+
+ result += " />";
+
+ return result;
+}
+
+
+var _DoHeaders = function(text) {
+
+ // Setext-style headers:
+ // Header 1
+ // ========
+ //
+ // Header 2
+ // --------
+ //
+ text = text.replace(/^(.+)[ \t]*\n=+[ \t]*\n+/gm,
+ function(wholeMatch,m1){return hashBlock('<h1 id="' + headerId(m1) + '">' + _RunSpanGamut(m1) + "</h1>");});
+
+ text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,
+ function(matchFound,m1){return hashBlock('<h2 id="' + headerId(m1) + '">' + _RunSpanGamut(m1) + "</h2>");});
+
+ // atx-style headers:
+ // # Header 1
+ // ## Header 2
+ // ## Header 2 with closing hashes ##
+ // ...
+ // ###### Header 6
+ //
+
+ /*
+ text = text.replace(/
+ ^(\#{1,6}) // $1 = string of #'s
+ [ \t]*
+ (.+?) // $2 = Header text
+ [ \t]*
+ \#* // optional closing #'s (not counted)
+ \n+
+ /gm, function() {...});
+ */
+
+ text = text.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm,
+ function(wholeMatch,m1,m2) {
+ var h_level = m1.length;
+ return hashBlock("<h" + h_level + ' id="' + headerId(m2) + '">' + _RunSpanGamut(m2) + "</h" + h_level + ">");
+ });
+
+ function headerId(m) {
+ return m.replace(/[^\w]/g, '').toLowerCase();
+ }
+ return text;
+}
+
+// This declaration keeps Dojo compressor from outputting garbage:
+var _ProcessListItems;
+
+var _DoLists = function(text) {
+//
+// Form HTML ordered (numbered) and unordered (bulleted) lists.
+//
+
+ // attacklab: add sentinel to hack around khtml/safari bug:
+ // http://bugs.webkit.org/show_bug.cgi?id=11231
+ text += "~0";
+
+ // Re-usable pattern to match any entirel ul or ol list:
+
+ /*
+ var whole_list = /
+ ( // $1 = whole list
+ ( // $2
+ [ ]{0,3} // attacklab: g_tab_width - 1
+ ([*+-]|\d+[.]) // $3 = first list item marker
+ [ \t]+
+ )
+ [^\r]+?
+ ( // $4
+ ~0 // sentinel for workaround; should be $
+ |
+ \n{2,}
+ (?=\S)
+ (?! // Negative lookahead for another list item marker
+ [ \t]*
+ (?:[*+-]|\d+[.])[ \t]+
+ )
+ )
+ )/g
+ */
+ var whole_list = /^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm;
+
+ if (g_list_level) {
+ text = text.replace(whole_list,function(wholeMatch,m1,m2) {
+ var list = m1;
+ var list_type = (m2.search(/[*+-]/g)>-1) ? "ul" : "ol";
+
+ // Turn double returns into triple returns, so that we can make a
+ // paragraph for the last item in a list, if necessary:
+ list = list.replace(/\n{2,}/g,"\n\n\n");;
+ var result = _ProcessListItems(list);
+
+ // Trim any trailing whitespace, to put the closing `</$list_type>`
+ // up on the preceding line, to get it past the current stupid
+ // HTML block parser. This is a hack to work around the terrible
+ // hack that is the HTML block parser.
+ result = result.replace(/\s+$/,"");
+ result = "<"+list_type+">" + result + "</"+list_type+">\n";
+ return result;
+ });
+ } else {
+ whole_list = /(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g;
+ text = text.replace(whole_list,function(wholeMatch,m1,m2,m3) {
+ var runup = m1;
+ var list = m2;
+
+ var list_type = (m3.search(/[*+-]/g)>-1) ? "ul" : "ol";
+ // Turn double returns into triple returns, so that we can make a
+ // paragraph for the last item in a list, if necessary:
+ var list = list.replace(/\n{2,}/g,"\n\n\n");;
+ var result = _ProcessListItems(list);
+ result = runup + "<"+list_type+">\n" + result + "</"+list_type+">\n";
+ return result;
+ });
+ }
+
+ // attacklab: strip sentinel
+ text = text.replace(/~0/,"");
+
+ return text;
+}
+
+_ProcessListItems = function(list_str) {
+//
+// Process the contents of a single ordered or unordered list, splitting it
+// into individual list items.
+//
+ // The $g_list_level global keeps track of when we're inside a list.
+ // Each time we enter a list, we increment it; when we leave a list,
+ // we decrement. If it's zero, we're not in a list anymore.
+ //
+ // We do this because when we're not inside a list, we want to treat
+ // something like this:
+ //
+ // I recommend upgrading to version
+ // 8. Oops, now this line is treated
+ // as a sub-list.
+ //
+ // As a single paragraph, despite the fact that the second line starts
+ // with a digit-period-space sequence.
+ //
+ // Whereas when we're inside a list (or sub-list), that line will be
+ // treated as the start of a sub-list. What a kludge, huh? This is
+ // an aspect of Markdown's syntax that's hard to parse perfectly
+ // without resorting to mind-reading. Perhaps the solution is to
+ // change the syntax rules such that sub-lists must start with a
+ // starting cardinal number; e.g. "1." or "a.".
+
+ g_list_level++;
+
+ // trim trailing blank lines:
+ list_str = list_str.replace(/\n{2,}$/,"\n");
+
+ // attacklab: add sentinel to emulate \z
+ list_str += "~0";
+
+ /*
+ list_str = list_str.replace(/
+ (\n)? // leading line = $1
+ (^[ \t]*) // leading whitespace = $2
+ ([*+-]|\d+[.]) [ \t]+ // list marker = $3
+ ([^\r]+? // list item text = $4
+ (\n{1,2}))
+ (?= \n* (~0 | \2 ([*+-]|\d+[.]) [ \t]+))
+ /gm, function(){...});
+ */
+ list_str = list_str.replace(/(\n)?(^[ \t]*)([*+-]|\d+[.])[ \t]+([^\r]+?(\n{1,2}))(?=\n*(~0|\2([*+-]|\d+[.])[ \t]+))/gm,
+ function(wholeMatch,m1,m2,m3,m4){
+ var item = m4;
+ var leading_line = m1;
+ var leading_space = m2;
+
+ if (leading_line || (item.search(/\n{2,}/)>-1)) {
+ item = _RunBlockGamut(_Outdent(item));
+ }
+ else {
+ // Recursion for sub-lists:
+ item = _DoLists(_Outdent(item));
+ item = item.replace(/\n$/,""); // chomp(item)
+ item = _RunSpanGamut(item);
+ }
+
+ return "<li>" + item + "</li>\n";
+ }
+ );
+
+ // attacklab: strip sentinel
+ list_str = list_str.replace(/~0/g,"");
+
+ g_list_level--;
+ return list_str;
+}
+
+
+var _DoCodeBlocks = function(text) {
+//
+// Process Markdown `<pre><code>` blocks.
+//
+
+ /*
+ text = text.replace(text,
+ /(?:\n\n|^)
+ ( // $1 = the code block -- one or more lines, starting with a space/tab
+ (?:
+ (?:[ ]{4}|\t) // Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
+ .*\n+
+ )+
+ )
+ (\n*[ ]{0,3}[^ \t\n]|(?=~0)) // attacklab: g_tab_width
+ /g,function(){...});
+ */
+
+ // attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
+ text += "~0";
+
+ text = text.replace(/(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,
+ function(wholeMatch,m1,m2) {
+ var codeblock = m1;
+ var nextChar = m2;
+
+ codeblock = _EncodeCode( _Outdent(codeblock));
+ codeblock = _Detab(codeblock);
+ codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines
+ codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace
+
+ codeblock = "<pre><code>" + codeblock + "\n</code></pre>";
+
+ return hashBlock(codeblock) + nextChar;
+ }
+ );
+
+ // attacklab: strip sentinel
+ text = text.replace(/~0/,"");
+
+ return text;
+}
+
+var _DoGithubCodeBlocks = function(text) {
+//
+// Process Github-style code blocks
+// Example:
+// ```ruby
+// def hello_world(x)
+// puts "Hello, #{x}"
+// end
+// ```
+//
+
+
+ // attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
+ text += "~0";
+
+ text = text.replace(/\n```(.*)\n([^`]+)\n```/g,
+ function(wholeMatch,m1,m2) {
+ var language = m1;
+ var codeblock = m2;
+
+ codeblock = _EncodeCode(codeblock);
+ codeblock = _Detab(codeblock);
+ codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines
+ codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace
+
+ codeblock = "<pre><code class=" + language + ">" + codeblock + "\n</code></pre>";
+
+ return hashBlock(codeblock);
+ }
+ );
+
+ // attacklab: strip sentinel
+ text = text.replace(/~0/,"");
+
+ return text;
+}
+
+var hashBlock = function(text) {
+ text = text.replace(/(^\n+|\n+$)/g,"");
+ return "\n\n~K" + (g_html_blocks.push(text)-1) + "K\n\n";
+}
+
+var _DoCodeSpans = function(text) {
+//
+// * Backtick quotes are used for <code></code> spans.
+//
+// * You can use multiple backticks as the delimiters if you want to
+// include literal backticks in the code span. So, this input:
+//
+// Just type ``foo `bar` baz`` at the prompt.
+//
+// Will translate to:
+//
+// <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
+//
+// There's no arbitrary limit to the number of backticks you
+// can use as delimters. If you need three consecutive backticks
+// in your code, use four for delimiters, etc.
+//
+// * You can use spaces to get literal backticks at the edges:
+//
+// ... type `` `bar` `` ...
+//
+// Turns to:
+//
+// ... type <code>`bar`</code> ...
+//
+
+ /*
+ text = text.replace(/
+ (^|[^\\]) // Character before opening ` can't be a backslash
+ (`+) // $2 = Opening run of `
+ ( // $3 = The code block
+ [^\r]*?
+ [^`] // attacklab: work around lack of lookbehind
+ )
+ \2 // Matching closer
+ (?!`)
+ /gm, function(){...});
+ */
+
+ text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
+ function(wholeMatch,m1,m2,m3,m4) {
+ var c = m3;
+ c = c.replace(/^([ \t]*)/g,""); // leading whitespace
+ c = c.replace(/[ \t]*$/g,""); // trailing whitespace
+ c = _EncodeCode(c);
+ return m1+"<code>"+c+"</code>";
+ });
+
+ return text;
+}
+
+var _EncodeCode = function(text) {
+//
+// Encode/escape certain characters inside Markdown code runs.
+// The point is that in code, these characters are literals,
+// and lose their special Markdown meanings.
+//
+ // Encode all ampersands; HTML entities are not
+ // entities within a Markdown code span.
+ text = text.replace(/&/g,"&amp;");
+
+ // Do the angle bracket song and dance:
+ text = text.replace(/</g,"&lt;");
+ text = text.replace(/>/g,"&gt;");
+
+ // Now, escape characters that are magic in Markdown:
+ text = escapeCharacters(text,"\*_{}[]\\",false);
+
+// jj the line above breaks this:
+//---
+
+//* Item
+
+// 1. Subitem
+
+// special char: *
+//---
+
+ return text;
+}
+
+
+var _DoItalicsAndBold = function(text) {
+
+ // <strong> must go first:
+ text = text.replace(/(\*\*|__)(?=\S)([^\r]*?\S[*_]*)\1/g,
+ "<strong>$2</strong>");
+
+ text = text.replace(/(\*|_)(?=\S)([^\r]*?\S)\1/g,
+ "<em>$2</em>");
+
+ return text;
+}
+
+
+var _DoBlockQuotes = function(text) {
+
+ /*
+ text = text.replace(/
+ ( // Wrap whole match in $1
+ (
+ ^[ \t]*>[ \t]? // '>' at the start of a line
+ .+\n // rest of the first line
+ (.+\n)* // subsequent consecutive lines
+ \n* // blanks
+ )+
+ )
+ /gm, function(){...});
+ */
+
+ text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,
+ function(wholeMatch,m1) {
+ var bq = m1;
+
+ // attacklab: hack around Konqueror 3.5.4 bug:
+ // "----------bug".replace(/^-/g,"") == "bug"
+
+ bq = bq.replace(/^[ \t]*>[ \t]?/gm,"~0"); // trim one level of quoting
+
+ // attacklab: clean up hack
+ bq = bq.replace(/~0/g,"");
+
+ bq = bq.replace(/^[ \t]+$/gm,""); // trim whitespace-only lines
+ bq = _RunBlockGamut(bq); // recurse
+
+ bq = bq.replace(/(^|\n)/g,"$1 ");
+ // These leading spaces screw with <pre> content, so we need to fix that:
+ bq = bq.replace(
+ /(\s*<pre>[^\r]+?<\/pre>)/gm,
+ function(wholeMatch,m1) {
+ var pre = m1;
+ // attacklab: hack around Konqueror 3.5.4 bug:
+ pre = pre.replace(/^ /mg,"~0");
+ pre = pre.replace(/~0/g,"");
+ return pre;
+ });
+
+ return hashBlock("<blockquote>\n" + bq + "\n</blockquote>");
+ });
+ return text;
+}
+
+
+var _FormParagraphs = function(text) {
+//
+// Params:
+// $text - string to process with html <p> tags
+//
+
+ // Strip leading and trailing lines:
+ text = text.replace(/^\n+/g,"");
+ text = text.replace(/\n+$/g,"");
+
+ var grafs =