/
showdown.js
1688 lines (1419 loc) · 46.3 KB
/
showdown.js
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;/*! showdown 27-05-2015 */
(function(){
/**
* Created by Tivie on 06-01-2015.
*/
// Private properties
var showdown = {},
parsers = {},
extensions = {},
globalOptions = {
omitExtraWLInCodeBlocks: false,
prefixHeaderId: false
};
/**
* helper namespace
* @type {{}}
*/
showdown.helper = {};
// Public properties
showdown.extensions = {};
/**
* Set a global option
* @static
* @param {string} key
* @param {string} value
* @returns {showdown}
*/
showdown.setOption = function (key, value) {
'use strict';
globalOptions[key] = value;
return this;
};
/**
* Get a global option
* @static
* @param {string} key
* @returns {*}
*/
showdown.getOption = function (key) {
'use strict';
return globalOptions[key];
};
/**
* Get the global options
* @static
* @returns {{omitExtraWLInCodeBlocks: boolean, prefixHeaderId: boolean}}
*/
showdown.getOptions = function () {
'use strict';
return globalOptions;
};
/**
* Get or set a subParser
*
* subParser(name) - Get a registered subParser
* subParser(name, func) - Register a subParser
* @static
* @param {string} name
* @param {function} [func]
* @returns {*}
*/
showdown.subParser = function (name, func) {
'use strict';
if (showdown.helper.isString(name)) {
if (typeof func !== 'undefined') {
parsers[name] = func;
} else {
if (parsers.hasOwnProperty(name)) {
return parsers[name];
} else {
throw Error('SubParser named ' + name + ' not registered!');
}
}
}
};
showdown.extension = function (name, ext) {
'use strict';
if (!showdown.helper.isString(name)) {
throw Error('Extension \'name\' must be a string');
}
name = showdown.helper.stdExtName(name);
if (showdown.helper.isUndefined(ext)) {
return getExtension();
} else {
return setExtension();
}
};
function getExtension(name) {
'use strict';
if (!extensions.hasOwnProperty(name)) {
throw Error('Extension named ' + name + ' is not registered!');
}
return extensions[name];
}
function setExtension(name, ext) {
'use strict';
if (typeof ext !== 'object') {
throw Error('A Showdown Extension must be an object, ' + typeof ext + ' given');
}
if (!showdown.helper.isString(ext.type)) {
throw Error('When registering a showdown extension, "type" must be a string, ' + typeof ext.type + ' given');
}
ext.type = ext.type.toLowerCase();
extensions[name] = ext;
}
/**
* Showdown Converter class
*
* @param {object} [converterOptions]
* @returns {{makeHtml: Function}}
*/
showdown.Converter = function (converterOptions) {
'use strict';
converterOptions = converterOptions || {};
var options = {},
langExtensions = [],
outputModifiers = [],
parserOrder = [
'githubCodeBlocks',
'hashHTMLBlocks',
'stripLinkDefinitions',
'blockGamut',
'unescapeSpecialChars'
];
for (var gOpt in globalOptions) {
if (globalOptions.hasOwnProperty(gOpt)) {
options[gOpt] = globalOptions[gOpt];
}
}
// Merge options
if (typeof converterOptions === 'object') {
for (var opt in converterOptions) {
if (converterOptions.hasOwnProperty(opt)) {
options[opt] = converterOptions[opt];
}
}
}
// This is a dirty workaround to maintain backwards extension compatibility
// We define a self var (which is a copy of this) and inject the makeHtml function
// directly to it. This ensures a full converter object is available when iterating over extensions
// We should rewrite the extension loading mechanism and use some kind of interface or decorator pattern
// and inject the object reference there instead.
var self = this;
self.makeHtml = makeHtml;
// Parse options
if (options.extensions) {
// Iterate over each plugin
showdown.helper.forEach(options.extensions, function (plugin) {
var pluginName = plugin;
// Assume it's a bundled plugin if a string is given
if (typeof plugin === 'string') {
var tPluginName = showdown.helper.stdExtName(plugin);
if (!showdown.helper.isUndefined(showdown.extensions[tPluginName]) && showdown.extensions[tPluginName]) {
//Trigger some kind of deprecated alert
plugin = showdown.extensions[tPluginName];
} else if (!showdown.helper.isUndefined(extensions[tPluginName])) {
plugin = extensions[tPluginName];
}
}
if (typeof plugin === 'function') {
// Iterate over each extension within that plugin
showdown.helper.forEach(plugin(self), function (ext) {
// Sort extensions by type
if (ext.type) {
if (ext.type === 'language' || ext.type === 'lang') {
langExtensions.push(ext);
} else if (ext.type === 'output' || ext.type === 'html') {
outputModifiers.push(ext);
}
} else {
// Assume language extension
outputModifiers.push(ext);
}
});
} else {
var errMsg = 'An extension could not be loaded. It was either not found or is not a valid extension.';
if (typeof pluginName === 'string') {
errMsg = 'Extension "' + pluginName + '" could not be loaded. It was either not found or is not a valid extension.';
}
throw errMsg;
}
});
}
/**
* Converts a markdown string into HTML
* @param {string} text
* @returns {*}
*/
function makeHtml(text) {
//check if text is not falsy
if (!text) {
return text;
}
var globals = {
gHtmlBlocks: [],
gUrls: {},
gTitles: {},
gListLevel: 0,
hashLinkCounts: {},
langExtensions: langExtensions,
outputModifiers: outputModifiers
};
// attacklab: Replace ~ with ~T
// This lets us use tilde as an escape char to avoid md5 hashes
// The choice of character is arbitrary; 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';
// detab
text = parsers.detab(text, options, globals);
// stripBlankLines
text = parsers.stripBlankLines(text, options, globals);
//run languageExtensions
text = parsers.languageExtensions(text, options, globals);
// Run all registered parsers
for (var i = 0; i < parserOrder.length; ++i) {
var name = parserOrder[i];
text = parsers[name](text, options, globals);
}
// attacklab: Restore dollar signs
text = text.replace(/~D/g, '$$');
// attacklab: Restore tildes
text = text.replace(/~T/g, '~');
// Run output modifiers
showdown.helper.forEach(globals.outputModifiers, function (ext) {
text = showdown.subParser('runExtension')(ext, text);
});
text = parsers.outputModifiers(text, options, globals);
return text;
}
/**
* Set an option of this Converter instance
* @param {string} key
* @param {string} value
*/
function setOption (key, value) {
options[key] = value;
}
/**
* Get the option of this Converter instance
* @param {string} key
* @returns {*}
*/
function getOption(key) {
return options[key];
}
/**
* Get the options of this Converter instance
* @returns {{}}
*/
function getOptions() {
return options;
}
return {
makeHtml: makeHtml,
setOption: setOption,
getOption: getOption,
getOptions: getOptions
};
};
/**
* showdownjs helper functions
*/
if (!showdown.hasOwnProperty('helper')) {
showdown.helper = {};
}
/**
* Check if var is string
* @static
* @param {string} a
* @returns {boolean}
*/
showdown.helper.isString = function isString(a) {
'use strict';
return (typeof a === 'string' || a instanceof String);
};
/**
* ForEach helper function
* @static
* @param {*} obj
* @param {function} callback
*/
showdown.helper.forEach = function forEach(obj, callback) {
'use strict';
if (typeof obj.forEach === 'function') {
obj.forEach(callback);
} else {
for (var i = 0; i < obj.length; i++) {
callback(obj[i], i, obj);
}
}
};
/**
* isArray helper function
* @static
* @param {*} a
* @returns {boolean}
*/
showdown.helper.isArray = function isArray(a) {
'use strict';
return a.constructor === Array;
};
/**
* Check if value is undefined
* @static
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
*/
showdown.helper.isUndefined = function isUndefined(value) {
'use strict';
return typeof value === 'undefined';
};
/**
* Standardidize extension name
* @static
* @param {string} s extension name
* @returns {string}
*/
showdown.helper.stdExtName = function (s) {
'use strict';
return s.replace(/[_-]||\s/g, '').toLowerCase();
};
function escapeCharactersCallback(wholeMatch, m1) {
'use strict';
var charCodeToEscape = m1.charCodeAt(0);
return '~E' + charCodeToEscape + 'E';
}
/**
* Callback used to escape characters when passing through String.replace
* @static
* @param {string} wholeMatch
* @param {string} m1
* @returns {string}
*/
showdown.helper.escapeCharactersCallback = escapeCharactersCallback;
/**
* Escape characters in a string
* @static
* @param {string} text
* @param {string} charsToEscape
* @param {boolean} afterBackslash
* @returns {XML|string|void|*}
*/
showdown.helper.escapeCharacters = function escapeCharacters(text, charsToEscape, afterBackslash) {
'use strict';
// 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, escapeCharactersCallback);
return text;
};
/**
* Turn Markdown link shortcuts into XHTML <a> tags.
*/
showdown.subParser('anchors', function (text, config, globals) {
'use strict';
var writeAnchorTag = function (wholeMatch, m1, m2, m3, m4, m5, m6, m7) {
if (showdown.helper.isUndefined(m7)) {
m7 = '';
}
wholeMatch = m1;
var linkText = m2,
linkId = m3.toLowerCase(),
url = m4,
title = m7;
if (!url) {
if (!linkId) {
// lower-case and turn embedded newlines into spaces
linkId = linkText.toLowerCase().replace(/ ?\n/g, ' ');
}
url = '#' + linkId;
if (!showdown.helper.isUndefined(globals.gUrls[linkId])) {
url = globals.gUrls[linkId];
if (!showdown.helper.isUndefined(globals.gTitles[linkId])) {
title = globals.gTitles[linkId];
}
} else {
if (wholeMatch.search(/\(\s*\)$/m) > -1) {
// Special case for explicit empty url
url = '';
} else {
return wholeMatch;
}
}
}
url = showdown.helper.escapeCharacters(url, '*_', false);
var result = '<a href="' + url + '"';
if (title !== '' && title !== null) {
title = title.replace(/"/g, '"');
title = showdown.helper.escapeCharacters(title, '*_', false);
result += ' title="' + title + '"';
}
result += '>' + linkText + '</a>';
return result;
};
// 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;
});
showdown.subParser('autoLinks', function (text) {
'use strict';
text = text.replace(/<((https?|ftp|dict):[^'">\s]+)>/gi, '<a href=\"$1\">$1</a>');
// Email addresses: <address@domain.foo>
/*
text = text.replace(/
<
(?:mailto:)?
(
[-.\w]+
\@
[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
)
>
/gi);
*/
var pattern = /<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi;
text = text.replace(pattern, function (wholeMatch, m1) {
var unescapedStr = showdown.subParser('unescapeSpecialChars')(m1);
return showdown.subParser('encodeEmailAddress')(unescapedStr);
});
return text;
});
/**
* These are all the transformations that form block-level
* tags like paragraphs, headers, and list items.
*/
showdown.subParser('blockGamut', function (text, options, globals) {
'use strict';
text = showdown.subParser('headers')(text, options, globals);
// Do Horizontal Rules:
var key = showdown.subParser('hashBlock')('<hr />', options, globals);
text = text.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm, key);
text = text.replace(/^[ ]{0,2}([ ]?\-[ ]?){3,}[ \t]*$/gm, key);
text = text.replace(/^[ ]{0,2}([ ]?\_[ ]?){3,}[ \t]*$/gm, key);
text = showdown.subParser('lists')(text, options, globals);
text = showdown.subParser('codeBlocks')(text, options, globals);
text = showdown.subParser('blockQuotes')(text, options, globals);
// 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 = showdown.subParser('hashHTMLBlocks')(text, options, globals);
text = showdown.subParser('paragraphs')(text, options, globals);
return text;
});
showdown.subParser('blockQuotes', function (text, options, globals) {
'use strict';
/*
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 = showdown.subParser('blockGamut')(bq, options, globals); // 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 showdown.subParser('hashBlock')('<blockquote>\n' + bq + '\n</blockquote>', options, globals);
});
return text;
});
/**
* Process Markdown `<pre><code>` blocks.
*/
showdown.subParser('codeBlocks', function (text, options, globals) {
'use strict';
/*
text = text.replace(text,
/(?:\n\n|^)
( // $1 = the code block -- one or more lines, starting with a space/tab
(?:
(?:[ ]{4}|\t) // Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
.*\n+
)+
)
(\n*[ ]{0,3}[^ \t\n]|(?=~0)) // attacklab: g_tab_width
/g,function(){...});
*/
// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
text += '~0';
var pattern = /(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g;
text = text.replace(pattern, function (wholeMatch, m1, m2) {
var codeblock = m1,
nextChar = m2,
end = '\n';
codeblock = showdown.subParser('outdent')(codeblock);
codeblock = showdown.subParser('encodeCode')(codeblock);
codeblock = showdown.subParser('detab')(codeblock);
codeblock = codeblock.replace(/^\n+/g, ''); // trim leading newlines
codeblock = codeblock.replace(/\n+$/g, ''); // trim trailing newlines
if (options.omitExtraWLInCodeBlocks) {
end = '';
}
codeblock = '<pre><code>' + codeblock + end + '</code></pre>';
return showdown.subParser('hashBlock')(codeblock, options, globals) + nextChar;
});
// attacklab: strip sentinel
text = text.replace(/~0/, '');
return 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> ...
*/
showdown.subParser('codeSpans', function (text) {
'use strict';
/*
text = text.replace(/
(^|[^\\]) // Character before opening ` can't be a backslash
(`+) // $2 = Opening run of `
( // $3 = The code block
[^\r]*?
[^`] // attacklab: work around lack of lookbehind
)
\2 // Matching closer
(?!`)
/gm, function(){...});
*/
text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm, function (wholeMatch, m1, m2, m3) {
var c = m3;
c = c.replace(/^([ \t]*)/g, ''); // leading whitespace
c = c.replace(/[ \t]*$/g, ''); // trailing whitespace
c = showdown.subParser('encodeCode')(c);
return m1 + '<code>' + c + '</code>';
});
return text;
});
/**
* Convert all tabs to spaces
*/
showdown.subParser('detab', function (text) {
'use strict';
// expand first n-1 tabs
text = text.replace(/\t(?=\t)/g, ' '); // 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) {
var leadingText = m1,
numSpaces = 4 - leadingText.length % 4; // 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, ' '); // g_tab_width
text = text.replace(/~B/g, '');
return text;
});
/**
* Smart processing for ampersands and angle brackets that need to be encoded.
*/
showdown.subParser('encodeAmpsAndAngles', function (text) {
'use strict';
// 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;
});
/**
* 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.
*/
showdown.subParser('encodeBackslashEscapes', function (text) {
'use strict';
text = text.replace(/\\(\\)/g, showdown.helper.escapeCharactersCallback);
text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g, showdown.helper.escapeCharactersCallback);
return 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.
*/
showdown.subParser('encodeCode', function (text) {
'use strict';
// 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 = showdown.helper.escapeCharacters(text, '*_{}[]\\', false);
// jj the line above breaks this:
//---
//* Item
// 1. Subitem
// special char: *
// ---
return text;
});
/**
* 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>
*
*/
showdown.subParser('encodeEmailAddress', function (addr) {
'use strict';
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 > 0.9 ? encode[2](ch) : r > 0.45 ? 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;
});
/**
* Within tags -- meaning between < and > -- encode [\ ` * _] so they
* don't conflict with their use in Markdown for code, italics and strong.
*/
showdown.subParser('escapeSpecialCharsWithinTagAttributes', function (text) {
'use strict';
// 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, '$1`');
tag = showdown.helper.escapeCharacters(tag, '\\`*_', false);
return tag;
});
return text;
});
/**
* Handle github codeblocks prior to running HashHTML so that
* HTML contained within the codeblock gets escaped properly
* Example:
* ```ruby
* def hello_world(x)
* puts "Hello, #{x}"
* end
* ```
*/
showdown.subParser('githubCodeBlocks', function (text, options, globals) {
'use strict';
text += '~0';
text = text.replace(/(?:^|\n)```(.*)\n([\s\S]*?)\n```/g, function (wholeMatch, m1, m2) {
var language = m1,
codeblock = m2,
end = '\n';
if (options.omitExtraWLInCodeBlocks) {
end = '';
}
codeblock = showdown.subParser('encodeCode')(codeblock);
codeblock = showdown.subParser('detab')(codeblock);
codeblock = codeblock.replace(/^\n+/g, ''); // trim leading newlines
codeblock = codeblock.replace(/\n+$/g, ''); // trim trailing whitespace
codeblock = '<pre><code' + (language ? ' class="' + language + '"' : '') + '>' + codeblock + end + '</code></pre>';
return showdown.subParser('hashBlock')(codeblock, options, globals);
});
// attacklab: strip sentinel
text = text.replace(/~0/, '');
return text;
});
showdown.subParser('hashBlock', function (text, options, globals) {
'use strict';
text = text.replace(/(^\n+|\n+$)/g, '');
return '\n\n~K' + (globals.gHtmlBlocks.push(text) - 1) + 'K\n\n';
});
showdown.subParser('hashElement', function (text, options, globals) {
'use strict';
return function (wholeMatch, m1) {
var blockText = m1;
// Undo double lines
blockText = blockText.replace(/\n\n/g, '\n');
blockText = blockText.replace(/^\n/, '');
// strip trailing blank lines
blockText = blockText.replace(/\n+$/g, '');
// Replace the element text with a marker ("~KxK" where x is its key)
blockText = '\n\n~K' + (globals.gHtmlBlocks.push(blockText) - 1) + 'K\n\n';
return blockText;
};
});
showdown.subParser('hashHTMLBlocks', function (text, options, globals) {
'use strict';