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mobile-query-three-www-vendor-doccoviewer-vendor-showdown.js / js



  //
  // 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.
  //
  
  // **************************************************
  // GitHub Flavored Markdown modifications by Tekkub
  // http://github.github.com/github-flavored-markdown/
  //
  // Modifications are tagged with "GFM"
  // **************************************************
  
  //
  // 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,"~");
  
    // ** GFM **  Auto-link URLs and emails
    text = text.replace(/https? \/\/[^"\s\<\>]*[^.,;'"> \s\<\>\)\]\!]/g, function(wholeMatch,matchIndex){
      var left = text.slice(0, matchIndex), right = text.slice(matchIndex)
      if (left.match(/<[^>]+/) && right.match(/^[^>]*>/)) {return wholeMatch}
      href = wholeMatch.replace(/^http:\/\/github.com\//, "https://github.com/")
      return "<a href='" + href + "'>" + wholeMatch + "</a>";
    });
    text = text.replace(/[a-z0-9_\-+=.]+@[a-z0-9\-]+(\.[a-z0-9-]+)+/ig, function(wholeMatch){return "<a href='mailto:" + wholeMatch + "'>" + wholeMatch + "</a>";});
  
    // ** GFM ** Auto-link sha1 if GitHub.nameWithOwner is defined
    text = text.replace(/[a-f0-9]{40}/ig, function(wholeMatch,matchIndex){
      if (typeof(GitHub) == "undefined" || typeof(GitHub.nameWithOwner) == "undefined") {return wholeMatch;}
      var left = text.slice(0, matchIndex), right = text.slice(matchIndex)
      if (left.match(/@/) || (left.match(/<[^>]+/) && right.match(/^[^>]*>/))) {return wholeMatch;}
      return "<a href='http://github.com/" + GitHub.nameWithOwner + "/commit/" + wholeMatch + "'>" + wholeMatch.substring(0,7) + "</a>";
    });
  
    // ** GFM ** Auto-link user@sha1 if GitHub.nameWithOwner is defined
    text = text.replace(/([a-z0-9_\-+=.]+)@([a-f0-9]{40})/ig, function(wholeMatch,username,sha,matchIndex){
      if (typeof(GitHub) == "undefined" || typeof(GitHub.nameWithOwner) == "undefined") {return wholeMatch;}
      GitHub.repoName = GitHub.repoName || _GetRepoName()
      var left = text.slice(0, matchIndex), right = text.slice(matchIndex)
      if (left.match(/\//) || (left.match(/<[^>]+/) && right.match(/^[^>]*>/))) {return wholeMatch;}
      return "<a href='http://github.com/" + username + "/" + GitHub.repoName + "/commit/" + sha + "'>" + username + "@" + sha.substring(0,7) + "</a>";
    });
  
    // ** GFM ** Auto-link user/repo@sha1
    text = text.replace(/([a-z0-9_\-+=.]+\/[a-z0-9_\-+=.]+)@([a-f0-9]{40})/ig, function(wholeMatch,repo,sha){
      return "<a href='http://github.com/" + repo + "/commit/" + sha + "'>" + repo + "@" + sha.substring(0,7) + "</a>";
    });
  
    // ** GFM ** Auto-link #issue if GitHub.nameWithOwner is defined
    text = text.replace(/#([0-9]+)/ig, function(wholeMatch,issue,matchIndex){
      if (typeof(GitHub) == "undefined" || typeof(GitHub.nameWithOwner) == "undefined") {return wholeMatch;}
      var left = text.slice(0, matchIndex), right = text.slice(matchIndex)
      if (left == "" || left.match(/[a-z0-9_\-+=.]/) || (left.match(/<[^>]+/) && right.match(/^[^>]*>/))) {return wholeMatch;}
      return "<a href='http://github.com/" + GitHub.nameWithOwner + "/issues/#issue/" + issue + "'>" + wholeMatch + "</a>";
    });
  
    // ** GFM ** Auto-link user#issue if GitHub.nameWithOwner is defined
    text = text.replace(/([a-z0-9_\-+=.]+)#([0-9]+)/ig, function(wholeMatch,username,issue,matchIndex){
      if (typeof(GitHub) == "undefined" || typeof(GitHub.nameWithOwner) == "undefined") {return wholeMatch;}
      GitHub.repoName = GitHub.repoName || _GetRepoName()
      var left = text.slice(0, matchIndex), right = text.slice(matchIndex)
      if (left.match(/\//) || (left.match(/<[^>]+/) && right.match(/^[^>]*>/))) {return wholeMatch;}
      return "<a href='http://github.com/" + username + "/" + GitHub.repoName + "/issues/#issue/" + issue + "'>" + wholeMatch + "</a>";
    });
  
    // ** GFM ** Auto-link user/repo#issue
    text = text.replace(/([a-z0-9_\-+=.]+\/[a-z0-9_\-+=.]+)#([0-9]+)/ig, function(wholeMatch,repo,issue){
      return "<a href='http://github.com/" + repo + "/issues/#issue/" + issue + "'>" + wholeMatch + "</a>";
    });
  
          return text;
  }
  
  var _GetRepoName = function() {
    return GitHub.nameWithOwner.match(/^.+\/(.+)/)[1]
  }
  
  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 = _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>" + _RunSpanGamut(m1) + "</h1>");});
  
          text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,
                  function(matchFound,m1){return hashBlock("<h2>" + _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 + ">" + _RunSpanGamut(m2) + "</h" + h_level + ">"); }); 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 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(/(\w)_(\w)/g, "$1~E95E$2") // ** GFM ** "~E95E" == escaped "_" 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(/\n/g,"<br />"); // ** GFM ** 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


(C) Æliens 04/09/2009

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