//
// <http://www.attacklab.net/>
//
-
//
// Wherever possible, Showdown is a straight, line-by-line port
// of the Perl version of Markdown.
// replace "$text" with "text". Be sure to ignore whitespace
// and line endings.
//
-
-
//
// Showdown usage:
//
// 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,"");
-
- // Handle github codeblocks prior to running HashHTML so that
- // HTML contained within the codeblock gets escaped propertly
- text = _DoGithubCodeBlocks(text);
-
- // 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,""");
- }
-
- // 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|style|section|header|footer|nav|article|aside";
- var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|style|section|header|footer|nav|article|aside";
-
- // 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|style|section|header|footer|nav|article|aside)\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,""");
- 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: 
- // 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,""");
- 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,""");
- 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([\s\S]*?)\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+$/g,""); // trim trailing whitespace
-
- codeblock = "<pre><code" + (language ? " class=\"" + language + '"' : "") + ">" + codeblock + "\n</code></pre>";
-
- return hashBlock(codeblock);
- }
- );
-
- // attacklab: strip sentinel
- text = text.replace(/~0/,"");
-
- return text;
-}
-
-var hashBlock = function(text) {
- text = text.replace(/(^\n+|\n+$)/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,"&");
-
- // Do the angle bracket song and dance:
- text = text.replace(/</g,"<");
- text = text.replace(/>/g,">");
-
- // 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,"&");
-
- // Encode naked <'s
- text = text.replace(/<(?![a-z\/?\$!])/gi,"<");
-
- 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="mailto:foo@e
-// xample.com">foo
-// @example.com</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 module !== 'undefined') module.exports = Showdown;
\ No newline at end of file
+var Showdown={};Showdown.converter=function(){var a,b,c,d=0;this.makeHtml=function(d){return a=new Array,b=new Array,c=new Array,d=d.replace(/~/g,"~T"),d=d.replace(/\$/g,"~D"),d=d.replace(/\r\n/g,"\n"),d=d.replace(/\r/g,"\n"),d="\n\n"+d+"\n\n",d=F(d),d=d.replace(/^[ \t]+$/mg,""),d=f(d),d=e(d),d=h(d),d=D(d),d=d.replace(/~D/g,"$$"),d=d.replace(/~T/g,"~"),d};var e=function(c){var c=c.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|\Z)/gm,function(c,d,e,f,g){return d=d.toLowerCase(),a[d]=z(e),f?f+g:(g&&(b[d]=g.replace(/"/g,""")),"")});return c},f=function(a){a=a.replace(/\n/g,"\n\n");var b="p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del",c="p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math";return a=a.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ 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projects / reveal.js.git / commitdiff