mirror of
https://github.com/showdownjs/showdown.git
synced 2024-03-22 13:30:55 +08:00
1606 lines
50 KiB
JavaScript
1606 lines
50 KiB
JavaScript
//
|
|
// showdown.js -- A javascript port of Markdown.
|
|
//
|
|
// Copyright (c) 2007 John Fraser.
|
|
//
|
|
// Original Markdown Copyright (c) 2004-2005 John Gruber
|
|
// <http://daringfireball.net/projects/markdown/>
|
|
//
|
|
// Redistributable under a BSD-style open source license.
|
|
// See license.txt for more information.
|
|
//
|
|
// The full source distribution is at:
|
|
//
|
|
// A A L
|
|
// T C A
|
|
// T K B
|
|
//
|
|
// <http://www.attacklab.net/>
|
|
//
|
|
|
|
//
|
|
// Wherever possible, Showdown is a straight, line-by-line port
|
|
// of the Perl version of Markdown.
|
|
//
|
|
// This is not a normal parser design; it's basically just a
|
|
// series of string substitutions. It's hard to read and
|
|
// maintain this way, but keeping Showdown close to the original
|
|
// design makes it easier to port new features.
|
|
//
|
|
// More importantly, Showdown behaves like markdown.pl in most
|
|
// edge cases. So web applications can do client-side preview
|
|
// in Javascript, and then build identical HTML on the server.
|
|
//
|
|
// This port needs the new RegExp functionality of ECMA 262,
|
|
// 3rd Edition (i.e. Javascript 1.5). Most modern web browsers
|
|
// should do fine. Even with the new regular expression features,
|
|
// We do a lot of work to emulate Perl's regex functionality.
|
|
// The tricky changes in this file mostly have the "attacklab:"
|
|
// label. Major or self-explanatory changes don't.
|
|
//
|
|
// Smart diff tools like Araxis Merge will be able to match up
|
|
// this file with markdown.pl in a useful way. A little tweaking
|
|
// helps: in a copy of markdown.pl, replace "#" with "//" and
|
|
// replace "$text" with "text". Be sure to ignore whitespace
|
|
// and line endings.
|
|
//
|
|
|
|
|
|
//
|
|
// Showdown usage:
|
|
//
|
|
// var text = "Markdown *rocks*.";
|
|
//
|
|
// var converter = new Showdown.converter();
|
|
// var html = converter.makeHtml(text);
|
|
//
|
|
// alert(html);
|
|
//
|
|
// Note: move the sample code to the bottom of this
|
|
// file before uncommenting it.
|
|
//
|
|
|
|
|
|
//
|
|
// Showdown namespace
|
|
//
|
|
var Showdown = {extensions: {}};
|
|
|
|
//
|
|
// forEach
|
|
//
|
|
var forEach = Showdown.forEach = function (obj, callback) {
|
|
if (typeof obj.forEach === 'function') {
|
|
obj.forEach(callback);
|
|
} else {
|
|
var i, len = obj.length;
|
|
for (i = 0; i < len; i++) {
|
|
callback(obj[i], i, obj);
|
|
}
|
|
}
|
|
};
|
|
|
|
//
|
|
// Standard extension naming
|
|
//
|
|
var stdExtName = function (s) {
|
|
return s.replace(/[_-]||\s/g, '').toLowerCase();
|
|
};
|
|
|
|
//
|
|
// converter
|
|
//
|
|
// Wraps all "globals" so that the only thing
|
|
// exposed is makeHtml().
|
|
//
|
|
Showdown.converter = function (converter_options) {
|
|
|
|
//
|
|
// Globals:
|
|
//
|
|
|
|
// Global hashes, used by various utility routines
|
|
var g_urls;
|
|
var g_titles;
|
|
var g_html_blocks;
|
|
|
|
// Used to track when we're inside an ordered or unordered list
|
|
// (see _ProcessListItems() for details):
|
|
var g_list_level = 0;
|
|
|
|
// Global extensions
|
|
var g_lang_extensions = [];
|
|
var g_output_modifiers = [];
|
|
|
|
|
|
//
|
|
// Automatic Extension Loading (node only):
|
|
//
|
|
if (typeof module !== 'undefined' && typeof exports !== 'undefined' && typeof require !== 'undefined') {
|
|
var fs = require('fs');
|
|
|
|
if (fs) {
|
|
// Search extensions folder
|
|
var extensions = fs.readdirSync((__dirname || '.') + '/extensions').filter(function (file) {
|
|
return ~file.indexOf('.js');
|
|
}).map(function (file) {
|
|
return file.replace(/\.js$/, '');
|
|
});
|
|
// Load extensions into Showdown namespace
|
|
Showdown.forEach(extensions, function (ext) {
|
|
var name = stdExtName(ext);
|
|
Showdown.extensions[name] = require('./extensions/' + ext);
|
|
});
|
|
}
|
|
}
|
|
|
|
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 = {};
|
|
g_titles = {};
|
|
g_html_blocks = [];
|
|
|
|
// 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, "");
|
|
|
|
// Run language extensions
|
|
Showdown.forEach(g_lang_extensions, function (x) {
|
|
text = _ExecuteExtension(x, text);
|
|
});
|
|
|
|
// 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, "~");
|
|
|
|
// Run output modifiers
|
|
Showdown.forEach(g_output_modifiers, function (x) {
|
|
text = _ExecuteExtension(x, text);
|
|
});
|
|
|
|
return text;
|
|
};
|
|
|
|
|
|
//
|
|
// Options:
|
|
//
|
|
|
|
// Parse extensions options into separate arrays
|
|
if (converter_options && converter_options.extensions) {
|
|
|
|
var self = this;
|
|
|
|
// Iterate over each plugin
|
|
Showdown.forEach(converter_options.extensions, function (plugin) {
|
|
|
|
// Assume it's a bundled plugin if a string is given
|
|
if (typeof plugin === 'string') {
|
|
plugin = Showdown.extensions[stdExtName(plugin)];
|
|
}
|
|
|
|
if (typeof plugin === 'function') {
|
|
// Iterate over each extension within that plugin
|
|
Showdown.forEach(plugin(self), function (ext) {
|
|
// Sort extensions by type
|
|
if (ext.type) {
|
|
if (ext.type === 'language' || ext.type === 'lang') {
|
|
g_lang_extensions.push(ext);
|
|
} else if (ext.type === 'output' || ext.type === 'html') {
|
|
g_output_modifiers.push(ext);
|
|
}
|
|
} else {
|
|
// Assume language extension
|
|
g_output_modifiers.push(ext);
|
|
}
|
|
});
|
|
} else {
|
|
throw "Extension '" + plugin + "' could not be loaded. It was either not found or is not a valid extension.";
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
var _ExecuteExtension = function (ext, text) {
|
|
if (ext.regex) {
|
|
var re = new RegExp(ext.regex, 'g');
|
|
return text.replace(re, ext.replace);
|
|
} else if (ext.filter) {
|
|
return ext.filter(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(){...});
|
|
*/
|
|
|
|
// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
|
|
text += "~0";
|
|
|
|
text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|(?=~0))/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 "";
|
|
}
|
|
);
|
|
|
|
// attacklab: strip sentinel
|
|
text = text.replace(/~0/, "");
|
|
|
|
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 = [];
|
|
|
|
//
|
|
// 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>
|
|
//
|
|
|
|
var encode = [
|
|
function (ch) {
|
|
return "&#" + ch.charCodeAt(0) + ";";
|
|
},
|
|
function (ch) {
|
|
return "&#x" + ch.charCodeAt(0).toString(16) + ";";
|
|
},
|
|
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;
|
|
|
|
// stolen from AMD branch of underscore
|
|
// AMD define happens at the end for compatibility with AMD loaders
|
|
// that don't enforce next-turn semantics on modules.
|
|
if (typeof define === 'function' && define.amd) {
|
|
define('showdown', function () {
|
|
return Showdown;
|
|
});
|
|
}
|
|
;/**
|
|
* Created by Tivie on 04-11-2014.
|
|
*/
|
|
|
|
|
|
//Check if AngularJs and Showdown is defined and only load ng-Showdown if both are present
|
|
if (typeof angular !== 'undefined' && typeof Showdown !== 'undefined') {
|
|
|
|
(function (module, Showdown) {
|
|
|
|
module
|
|
.provider('$Showdown', provider)
|
|
.directive('sdModelToHtml', ['$Showdown', markdownToHtmlDirective])
|
|
.filter('sdStripHtml', stripHtmlFilter);
|
|
|
|
/**
|
|
* Angular Provider
|
|
* Enables configuration of showdown via angular.config and Dependency Injection into controllers, views
|
|
* directives, etc... This assures the directives and filters provided by the library itself stay consistent
|
|
* with the user configurations.
|
|
* If the user wants to use a different configuration in a determined context, he can use the "classic" Showdown
|
|
* object instead.
|
|
*
|
|
*/
|
|
function provider() {
|
|
|
|
// Configuration parameters for Showdown
|
|
var config = {
|
|
extensions: [],
|
|
stripHtml: true
|
|
};
|
|
|
|
/**
|
|
* Sets a configuration option
|
|
*
|
|
* @param {string} key Config parameter key
|
|
* @param {string} value Config parameter value
|
|
*/
|
|
this.setOption = function (key, value) {
|
|
config.key = value;
|
|
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Gets the value of the configuration parameter specified by key
|
|
*
|
|
* @param {string} key The config parameter key
|
|
* @returns {string|null} Returns the value of the config parameter. (or null if the config parameter is not set)
|
|
*/
|
|
this.getOption = function (key) {
|
|
if (config.hasOwnProperty(key)) {
|
|
return config.key;
|
|
} else {
|
|
return null;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Loads a Showdown Extension
|
|
*
|
|
* @param {string} extensionName The name of the extension to load
|
|
*/
|
|
this.loadExtension = function (extensionName) {
|
|
config.extensions.push(extensionName);
|
|
|
|
return this;
|
|
};
|
|
|
|
function SDObject() {
|
|
var converter = new Showdown.converter(config);
|
|
|
|
/**
|
|
* Converts a markdown text into HTML
|
|
*
|
|
* @param {string} markdown The markdown string to be converted to HTML
|
|
* @returns {string} The converted HTML
|
|
*/
|
|
this.makeHtml = function (markdown) {
|
|
return converter.makeHtml(markdown);
|
|
};
|
|
|
|
/**
|
|
* Strips a text of it's HTML tags
|
|
*
|
|
* @param {string} text
|
|
* @returns {string}
|
|
*/
|
|
this.stripHtml = function (text) {
|
|
return String(text).replace(/<[^>]+>/gm, '');
|
|
};
|
|
}
|
|
|
|
// The object returned by service provider
|
|
this.$get = function () {
|
|
return new SDObject();
|
|
};
|
|
}
|
|
|
|
/**
|
|
* AngularJS Directive to Md to HTML transformation
|
|
*
|
|
* Usage example:
|
|
* <div sd-md-to-html-model="markdownText" ></div>
|
|
*
|
|
* @param $Showdown
|
|
* @returns {*}
|
|
*/
|
|
function markdownToHtmlDirective($Showdown) {
|
|
|
|
var link = function (scope, element) {
|
|
scope.$watch('model', function (newValue) {
|
|
var val;
|
|
if (typeof newValue === 'string') {
|
|
val = $Showdown.makeHtml(newValue);
|
|
} else {
|
|
val = typeof newValue;
|
|
}
|
|
element.html(val);
|
|
});
|
|
};
|
|
|
|
return {
|
|
restrict: 'A',
|
|
link: link,
|
|
scope: {
|
|
model: '=sdModelToHtml'
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* AngularJS Filter to Strip HTML tags from text
|
|
*
|
|
* @returns {Function}
|
|
*/
|
|
function stripHtmlFilter() {
|
|
return function (text) {
|
|
return String(text).replace(/<[^>]+>/gm, '');
|
|
};
|
|
}
|
|
|
|
})(angular.module('Showdown', []), Showdown);
|
|
|
|
} else {
|
|
|
|
/** TODO Since this library is opt out, maybe we should not throw an error so we can concatenate this
|
|
script with the main lib */
|
|
// throw new Error("ng-showdown was not loaded because one of it's dependencies (AngularJS or Showdown) wasn't met");
|
|
}
|
|
|
|
//# sourceMappingURL=showdown.js.map
|