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  1. +177 −0 LICENSE
  2. +28 −0 README.md
  3. +155 −0 lib/optimist.js
  4. +1,365 −0 lib/showdown.js
  5. +41 −0 markdown.css
  6. +68 −0 preview.js
177 LICENSE
@@ -0,0 +1,177 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
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+
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+ any Contribution intentionally submitted for inclusion in the Work
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+ the terms of any separate license agreement you may have executed
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+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
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+ risks associated with Your exercise of permissions under this License.
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+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
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+ END OF TERMS AND CONDITIONS
28 README.md
@@ -0,0 +1,28 @@
+Description
+============
+The purpose of this project is to make it easy to preview [Github Flavor Markdown][] while offline using the same stylesheets and parsing that Github uses.
+
+Requirements
+============
+- A recent version of [node.js][] (tested with 0.2.3)
+
+Installation
+============
+No automated installation yet, simply run preview.js from this directory for now
+
+Usage
+=====
+<pre>Usage: node ./preview.js &lt;markdown file&gt; [-o &lt;html out&gt;] [--bottom]
+ By default, HTML output gets printed to stdout
+ To read stdin, use "-" as the markdown file
+ When --bottom is used, Javascript will be generated to scroll to the bottom of the view when shown in a browser</pre>
+
+Integration with Textmate
+=========================
+
+Create a new Command under a Bundle, and use this as the script:
+<pre>node=/path/to/node
+$node /path/to/preview.js $TM_FILEPATH --bottom</pre>
+
+[node.js]: http://nodejs.org
+[Github Flavor Markdown]: http://github.github.com/github-flavored-markdown/
155 lib/optimist.js
@@ -0,0 +1,155 @@
+// patched to support demandCount
+module.exports = Argv;
+var path = require('path');
+
+/* Hack an instance of Argv with process.argv into Argv
+ so people an do
+ require('optimist')(['--beeble=1','-z','zizzle']).argv
+ to parse a list of args and
+ require('optimist').argv
+ to get a parsed version of process.argv.
+*/
+var inst = Argv(process.argv.slice(2));
+Object.keys(inst).forEach(function (key) {
+ Argv[key] = typeof inst[key] == 'function'
+ ? inst[key].bind(inst)
+ : inst[key];
+});
+
+function Argv (args, cwd) {
+ var self = {};
+ if (!cwd) cwd = process.cwd();
+
+ self.$0 = process.argv
+ .slice(0,2)
+ .map(function (x) {
+ var b = rebase(cwd, x);
+ return x.match(/^\//) && b.length < x.length
+ ? b : x
+ })
+ .join(' ')
+ ;
+
+ if (process.argv[1] == process.env._) {
+ self.$0 = process.env._.replace(
+ path.dirname(process.execPath) + '/', ''
+ );
+ }
+
+ self.argv = { _ : [], $0 : self.$0 };
+
+ function set (key, value) {
+ if (key in self.argv) {
+ if (!Array.isArray(self.argv[key])) {
+ self.argv[key] = [ self.argv[key] ];
+ }
+ self.argv[key].push(value);
+ }
+ else {
+ self.argv[key] = value;
+ }
+ }
+
+ for (var i = 0; i < args.length; i++) {
+ var arg = args[i];
+
+ if (arg == '--') {
+ self.argv._.push.apply(self.argv._, args.slice(i + 1));
+ break;
+ }
+ else if (arg.match(/^--.+=/)) {
+ var m = arg.match(/^--([^=]+)=(.*)/);
+ set(m[1], m[2]);
+ }
+ else if (arg.match(/^--no-.+/)) {
+ var key = arg.match(/^--no-(.+)/)[1];
+ set(key, false);
+ }
+ else if (arg.match(/^--.+/)) {
+ var key = arg.match(/^--(.+)/)[1];
+ set(key, true);
+ }
+ else if (arg.match(/^-[^-]+/)) {
+ arg.slice(1,-1).split('').forEach(function (letter) {
+ set(letter, true);
+ });
+
+ var key = arg.slice(-1)[0];
+
+ if (args[i+1] && !args[i+1].match(/^-/)) {
+ set(key, args[i+1]);
+ i++;
+ }
+ else {
+ set(key, true);
+ }
+ }
+ else {
+ self.argv._.push(arg);
+ }
+ }
+
+ var usage;
+ self.usage = function (msg) {
+ usage = msg;
+ return self;
+ };
+
+ function fail (msg) {
+ if (usage) console.error(usage.replace(/\$0/g, self.$0))
+ console.error(msg);
+ process.exit();
+ }
+
+ self.check = function (f) {
+ try {
+ if (f(self.argv) === false) fail(err);
+ }
+ catch (err) { fail(err) }
+
+ return self;
+ };
+
+ self.demand = function (keys, cb) {
+ var missing = [];
+ keys.forEach(function (key) {
+ if (!(key in self.argv)) missing.push(key);
+ });
+
+ if (missing.length) {
+ if (cb) cb(missing);
+ else fail('Missing arguments: ' + missing.join(' '));
+ }
+ return self;
+ };
+
+ self.demandCount = function (count, cb) {
+ if (self.argv._.length < count) {
+ if (cb) cb(self.argv._.length);
+ else fail('Not enough arguments, expected ' + count + ', but only found ' + self.argv._.length);
+ }
+ return self;
+ }
+
+ self.parse = function (args) {
+ return Argv(args).argv;
+ };
+
+ return self;
+};
+
+// rebase an absolute path to a relative one with respect to a base directory
+// exported for tests
+module.exports.rebase = rebase;
+function rebase (base, dir) {
+ var ds = path.normalize(dir).split('/').slice(1);
+ var bs = path.normalize(base).split('/').slice(1);
+
+ for (var i = 0; ds[i] && ds[i] == bs[i]; i++);
+ ds.splice(0, i); bs.splice(0, i);
+
+ var p = path.normalize(
+ bs.map(function () { return '..' }).concat(ds).join('/')
+ ).replace(/\/$/,'').replace(/^$/, '.');
+ return p.match(/^[.\/]/) ? p : './' + p;
+}
1,365 lib/showdown.js
@@ -0,0 +1,1365 @@
+//
+// showdown.js -- A javascript port of Markdown.
+//
+// Copyright (c) 2007 John Fraser.
+//
+// Original Markdown Copyright (c) 2004-2005 John Gruber
+// <http://daringfireball.net/projects/markdown/>
+//
+// Redistributable under a BSD-style open source license.
+// See license.txt for more information.
+//
+// The full source distribution is at:
+//
+// A A L
+// T C A
+// T K B
+//
+// <http://www.attacklab.net/>
+//
+
+//
+// Wherever possible, Showdown is a straight, line-by-line port
+// of the Perl version of Markdown.
+//
+// This is not a normal parser design; it's basically just a
+// series of string substitutions. It's hard to read and
+// maintain this way, but keeping Showdown close to the original
+// design makes it easier to port new features.
+//
+// More importantly, Showdown behaves like markdown.pl in most
+// edge cases. So web applications can do client-side preview
+// in Javascript, and then build identical HTML on the server.
+//
+// This port needs the new RegExp functionality of ECMA 262,
+// 3rd Edition (i.e. Javascript 1.5). Most modern web browsers
+// should do fine. Even with the new regular expression features,
+// We do a lot of work to emulate Perl's regex functionality.
+// The tricky changes in this file mostly have the "attacklab:"
+// label. Major or self-explanatory changes don't.
+//
+// Smart diff tools like Araxis Merge will be able to match up
+// this file with markdown.pl in a useful way. A little tweaking
+// helps: in a copy of markdown.pl, replace "#" with "//" and
+// replace "$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"
+// **************************************************
+//
+//
+// Modified to expose the Showdown object to modules.exports
+// - Marshall Culpepper
+
+//
+// Showdown namespace
+//
+var Showdown = {};
+module.exports.Showdown = 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(/<[^>]+$/) && right.match(/^[^>]*>/)) {return wholeMatch}
+ return "<a href='" + wholeMatch + "'>" + wholeMatch + "</a>";
+ });
+ text = text.replace(/[a-z0-9_\-+=.]+@[a-z0-9\-]+(\.[a-z0-9-]+)+/ig, function(wholeMatch){return "<a href='mailto:" + wholeMatch + "'>" + wholeMatch + "</a>";});
+
+ // ** GFM ** Auto-link sha1 if GitHub.nameWithOwner is defined
+ text = text.replace(/[a-f0-9]{40}/ig, function(wholeMatch,matchIndex){
+ if (typeof(GitHub) == "undefined" || typeof(GitHub.nameWithOwner) == "undefined") {return wholeMatch;}
+ var left = text.slice(0, matchIndex), right = text.slice(matchIndex)
+ if (left.match(/@$/) || (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
41 markdown.css
@@ -0,0 +1,41 @@
+body {
+ padding: 10px;
+ font-size: 12px;
+}
+
+/* copied from github's bundle_github.css */
+.wikistyle h1,.wikistyle h2,.wikistyle h3,.wikistyle h4,.wikistyle h5,.wikistyle h6{border:0!important;}
+.wikistyle h1{font-size:170%!important;border-top:4px solid #aaa!important;padding-top:.5em!important;margin-top:1.5em!important;}
+.wikistyle h1:first-child{margin-top:0!important;padding-top:.25em!important;border-top:none!important;}
+.wikistyle h2{font-size:150%!important;margin-top:1.5em!important;border-top:4px solid #e0e0e0!important;padding-top:.5em!important;}
+.wikistyle h3{margin-top:1em!important;}
+.wikistyle p{margin:1em 0!important;line-height:1.5em!important;}
+.wikistyle a.absent{color:#a00;}
+.wikistyle ul,#wiki-form .content-body ul{margin:1em 0 1em 2em!important;}
+.wikistyle ol,#wiki-form .content-body ol{margin:1em 0 1em 2em!important;}
+.wikistyle ul li,#wiki-form .content-body ul li,.wikistyle ol li,#wiki-form .content-body ol li{margin-top:.5em;margin-bottom:.5em;}
+.wikistyle ul ul,.wikistyle ul ol,.wikistyle ol ol,.wikistyle ol ul,#wiki-form .content-body ul ul,#wiki-form .content-body ul ol,#wiki-form .content-body ol ol,#wiki-form .content-body ol ul{margin-top:0!important;margin-bottom:0!important;}
+.wikistyle blockquote{margin:1em 0!important;border-left:5px solid #ddd!important;padding-left:.6em!important;color:#555!important;}
+.wikistyle dt{font-weight:bold!important;margin-left:1em!important;}
+.wikistyle dd{margin-left:2em!important;margin-bottom:1em!important;}
+.wikistyle table{margin:1em 0!important;}
+.wikistyle table th{border-bottom:1px solid #bbb!important;padding:.2em 1em!important;}
+.wikistyle table td{border-bottom:1px solid #ddd!important;padding:.2em 1em!important;}
+.wikistyle pre{margin:1em 0!important;font-size:12px!important;background-color:#f8f8ff!important;border:1px solid #dedede!important;padding:.5em!important;line-height:1.5em!important;color:#444!important;overflow:auto!important;}
+.wikistyle pre code{padding:0!important;font-size:12px!important;background-color:#f8f8ff!important;border:none!important;}
+.wikistyle code{font-size:12px!important;background-color:#f8f8ff!important;color:#444!important;padding:0 .2em!important;border:1px solid #dedede!important;}
+.wikistyle a code,.wikistyle a:link code,.wikistyle a:visited code{color:#4183c4!important;}
+.wikistyle img{max-width:100%;}
+.wikistyle pre.console{margin:1em 0!important;font-size:12px!important;background-color:black!important;padding:.5em!important;line-height:1.5em!important;color:white!important;}
+.wikistyle pre.console code{padding:0!important;font-size:12px!important;background-color:black!important;border:none!important;color:white!important;}
+.wikistyle pre.console span{color:#888!important;}
+.wikistyle pre.console span.command{color:yellow!important;}
+.wikistyle .frame{margin:0;display:inline-block;}
+.wikistyle .frame img{display:block;}
+.wikistyle .frame>span{display:block;border:1px solid #aaa;padding:4px;}
+.wikistyle .frame span span{display:block;font-size:10pt;margin:0;padding:4px 0 2px 0;text-align:center;line-height:10pt;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;}
+.wikistyle .float-left{float:left;padding:.5em 1em .25em 0;}
+.wikistyle .float-right{float:right;padding:.5em 0 .25em 1em;}
+.wikistyle .align-left{display:block;text-align:left;}
+.wikistyle .align-center{display:block;text-align:center;}
+.wikistyle .align-right{display:block;text-align:right;}
68 preview.js
@@ -0,0 +1,68 @@
+/* github_markdown_preview
+ * Licensed under the Apache License, Version 2.0, see LICENSE
+ *
+ * Modified for node.js from:
+ * http://github.github.com/github-flavored-markdown/scripts/preview.js
+ */
+
+var path = require('path'),
+ fs = require('fs');
+
+require.paths.unshift(path.join(__dirname, 'lib'))
+
+var usageString = 'Usage: $0 <markdown file> [-o <html out>] [--bottom]\n';
+usageString += ' By default, HTML output gets printed to stdout\n';
+usageString += ' To read stdin, use "-" as the markdown file\n';
+usageString += ' When --bottom is used, HTML will be generated to scroll to the bottom of the view when shown in a browser\n';
+
+var argv = require('optimist').usage(usageString).demandCount(1).argv;
+var markdownFile = argv._[0]
+var Showdown = require('showdown').Showdown;
+var converter = new Showdown.converter();
+var markdown = "";
+
+function generateHtml() {
+ var markdownHtml = converter.makeHtml(markdown);
+ markdownHtml = markdownHtml.replace(/>/g, ">\n")
+ .replace(/</g, "\n<").replace(/\n{2,}/g, "\n\n")
+
+ var cssPath = path.join(path.dirname(__filename), 'markdown.css');
+ cssPath = cssPath.replace('\\', '/');
+
+ html = "<html><head>\n";
+ if (markdownFile != '-') {
+ basepath = path.dirname(markdownFile);
+ html += '<base href="file://' + basepath + '/"/>\n'
+ }
+ html += '<link href="file://' + cssPath + '" media="screen" rel="stylesheet" type="text/css"/>\n';
+ html += '</head><body><div class="wikistyle">\n'
+ html += markdownHtml
+ if (argv.bottom) {
+ html += '<a name="_markdown_bottom"></a><script type="text/javascript">window.location.href += "#_markdown_bottom";</script>\n';
+ }
+ html += '\n</div></body></html>';
+
+ if (!('o' in argv)) {
+ process.stdout.write(html);
+ } else {
+ var htmlOut = argv.o;
+ fs.writeFile(htmlOut, html, function(err) {
+ if (err) throw err;
+ console.log('HTML output saved to: ' + htmlOut);
+ });
+ }
+}
+
+if (markdownFile == '-') {
+ var stdin = process.openStdin();
+ stdin.setEncoding('utf8');
+ stdin.on('data', function(chunk) {
+ markdown += chunk.toString()
+ });
+ stdin.on('end', function(chunk) {
+ generateHtml();
+ });
+} else {
+ markdown = fs.readFileSync(markdownFile, 'utf8');
+ generateHtml();
+}

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