test
", "
',
'showdown': '
'
};
/**
* Turn Markdown link shortcuts into XHTML tags.
*/
showdown.subParser('makehtml.anchors', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.anchors.before', text, options, globals);
var writeAnchorTag = function (wholeMatch, linkText, linkId, url, m5, m6, title) {
if (showdown.helper.isUndefined(title)) {
title = '';
}
linkId = linkId.toLowerCase();
// Special case for explicit empty url
if (wholeMatch.search(/\(? ?(['"].*['"])?\)$/m) > -1) {
url = '';
} else 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 {
return wholeMatch;
}
}
//url = showdown.helper.escapeCharacters(url, '*_', false); // replaced line to improve performance
url = url.replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);
var result = '';
return result;
};
// First, handle reference-style links: [link text] [id]
text = text.replace(/\[((?:\[[^\]]*]|[^\[\]])*)] ?(?:\n *)?\[(.*?)]()()()()/g, writeAnchorTag);
// Next, inline-style links: [link text](url "optional title")
// cases with crazy urls like ./image/cat1).png
text = text.replace(/\[((?:\[[^\]]*]|[^\[\]])*)]()[ \t]*\([ \t]?<([^>]*)>(?:[ \t]*((["'])([^"]*?)\5))?[ \t]?\)/g,
writeAnchorTag);
// normal cases
text = text.replace(/\[((?:\[[^\]]*]|[^\[\]])*)]()[ \t]*\([ \t]??(?:[ \t]*((["'])([^"]*?)\5))?[ \t]?\)/g,
writeAnchorTag);
// 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(/\[([^\[\]]+)]()()()()()/g, writeAnchorTag);
// Lastly handle GithubMentions if option is enabled
if (options.ghMentions) {
text = text.replace(/(^|\s)(\\)?(@([a-z\d\-]+))(?=[.!?;,[\]()]|\s|$)/gmi, function (wm, st, escape, mentions, username) {
if (escape === '\\') {
return st + mentions;
}
//check if options.ghMentionsLink is a string
if (!showdown.helper.isString(options.ghMentionsLink)) {
throw new Error('ghMentionsLink option must be a string');
}
var lnk = options.ghMentionsLink.replace(/\{u}/g, username),
target = '';
if (options.openLinksInNewWindow) {
target = ' target="¨E95Eblank"';
}
return st + '' + mentions + '';
});
}
text = globals.converter._dispatch('makehtml.anchors.after', text, options, globals);
return text;
});
// url allowed chars [a-z\d_.~:/?#[]@!$&'()*+,;=-]
var simpleURLRegex = /([*~_]+|\b)(((https?|ftp|dict):\/\/|www\.)[^'">\s]+?\.[^'">\s]+?)()(\1)?(?=\s|$)(?!["<>])/gi,
simpleURLRegex2 = /([*~_]+|\b)(((https?|ftp|dict):\/\/|www\.)[^'">\s]+\.[^'">\s]+?)([.!?,()\[\]])?(\1)?(?=\s|$)(?!["<>])/gi,
delimUrlRegex = /()<(((https?|ftp|dict):\/\/|www\.)[^'">\s]+)()>()/gi,
simpleMailRegex = /(^|\s)(?:mailto:)?([A-Za-z0-9!#$%&'*+-/=?^_`{|}~.]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)(?=$|\s)/gmi,
delimMailRegex = /<()(?:mailto:)?([-.\w]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
replaceLink = function (options) {
'use strict';
return function (wm, leadingMagicChars, link, m2, m3, trailingPunctuation, trailingMagicChars) {
link = link.replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);
var lnkTxt = link,
append = '',
target = '',
lmc = leadingMagicChars || '',
tmc = trailingMagicChars || '';
if (/^www\./i.test(link)) {
link = link.replace(/^www\./i, 'http://www.');
}
if (options.excludeTrailingPunctuationFromURLs && trailingPunctuation) {
append = trailingPunctuation;
}
if (options.openLinksInNewWindow) {
target = ' target="¨E95Eblank"';
}
return lmc + '' + lnkTxt + '' + append + tmc;
};
},
replaceMail = function (options, globals) {
'use strict';
return function (wholeMatch, b, mail) {
var href = 'mailto:';
b = b || '';
mail = showdown.subParser('makehtml.unescapeSpecialChars')(mail, options, globals);
if (options.encodeEmails) {
href = showdown.helper.encodeEmailAddress(href + mail);
mail = showdown.helper.encodeEmailAddress(mail);
} else {
href = href + mail;
}
return b + '' + mail + '';
};
};
showdown.subParser('makehtml.autoLinks', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.autoLinks.before', text, options, globals);
text = text.replace(delimUrlRegex, replaceLink(options));
text = text.replace(delimMailRegex, replaceMail(options, globals));
text = globals.converter._dispatch('makehtml.autoLinks.after', text, options, globals);
return text;
});
showdown.subParser('makehtml.simplifiedAutoLinks', function (text, options, globals) {
'use strict';
if (!options.simplifiedAutoLink) {
return text;
}
text = globals.converter._dispatch('makehtml.simplifiedAutoLinks.before', text, options, globals);
if (options.excludeTrailingPunctuationFromURLs) {
text = text.replace(simpleURLRegex2, replaceLink(options));
} else {
text = text.replace(simpleURLRegex, replaceLink(options));
}
text = text.replace(simpleMailRegex, replaceMail(options, globals));
text = globals.converter._dispatch('makehtml.simplifiedAutoLinks.after', text, options, globals);
return text;
});
/**
* These are all the transformations that form block-level
* tags like paragraphs, headers, and list items.
*/
showdown.subParser('makehtml.blockGamut', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.blockGamut.before', text, options, globals);
// we parse blockquotes first so that we can have headings and hrs
// inside blockquotes
text = showdown.subParser('makehtml.blockQuotes')(text, options, globals);
text = showdown.subParser('makehtml.headers')(text, options, globals);
// Do Horizontal Rules:
text = showdown.subParser('makehtml.horizontalRule')(text, options, globals);
text = showdown.subParser('makehtml.lists')(text, options, globals);
text = showdown.subParser('makehtml.codeBlocks')(text, options, globals);
text = showdown.subParser('makehtml.tables')(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
// tags around block-level tags. text = showdown.subParser('makehtml.hashHTMLBlocks')(text, options, globals); text = showdown.subParser('makehtml.paragraphs')(text, options, globals); text = globals.converter._dispatch('makehtml.blockGamut.after', text, options, globals); return text; }); showdown.subParser('makehtml.blockQuotes', function (text, options, globals) { 'use strict'; text = globals.converter._dispatch('makehtml.blockQuotes.before', text, options, globals); // add a couple extra lines after the text and endtext mark text = text + '\n\n'; var rgx = /(^ {0,3}>[ \t]?.+\n(.+\n)*\n*)+/gm; if (options.splitAdjacentBlockquotes) { rgx = /^ {0,3}>[\s\S]*?(?:\n\n)/gm; } text = text.replace(rgx, function (bq) { // attacklab: hack around Konqueror 3.5.4 bug: // "----------bug".replace(/^-/g,"") == "bug" bq = bq.replace(/^[ \t]*>[ \t]?/gm, ''); // 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('makehtml.githubCodeBlocks')(bq, options, globals); bq = showdown.subParser('makehtml.blockGamut')(bq, options, globals); // recurse bq = bq.replace(/(^|\n)/g, '$1 '); // These leading spaces screw with
content, so we need to fix that:
bq = bq.replace(/(\s*[^\r]+?<\/pre>)/gm, function (wholeMatch, m1) {
var pre = m1;
// attacklab: hack around Konqueror 3.5.4 bug:
pre = pre.replace(/^ /mg, '¨0');
pre = pre.replace(/¨0/g, '');
return pre;
});
return showdown.subParser('makehtml.hashBlock')('\n' + bq + '\n
', options, globals);
});
text = globals.converter._dispatch('makehtml.blockQuotes.after', text, options, globals);
return text;
});
/**
* Process Markdown `` blocks.
*/
showdown.subParser('makehtml.codeBlocks', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.codeBlocks.before', text, options, globals);
// sentinel workarounds for lack of \A and \Z, safari\khtml bug
text += '¨0';
var pattern = /(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=¨0))/g;
text = text.replace(pattern, function (wholeMatch, m1, m2) {
var codeblock = m1,
nextChar = m2,
end = '\n';
codeblock = showdown.subParser('makehtml.outdent')(codeblock, options, globals);
codeblock = showdown.subParser('makehtml.encodeCode')(codeblock, options, globals);
codeblock = showdown.subParser('makehtml.detab')(codeblock, options, globals);
codeblock = codeblock.replace(/^\n+/g, ''); // trim leading newlines
codeblock = codeblock.replace(/\n+$/g, ''); // trim trailing newlines
if (options.omitExtraWLInCodeBlocks) {
end = '';
}
codeblock = '' + codeblock + end + '
';
return showdown.subParser('makehtml.hashBlock')(codeblock, options, globals) + nextChar;
});
// strip sentinel
text = text.replace(/¨0/, '');
text = globals.converter._dispatch('makehtml.codeBlocks.after', text, options, globals);
return text;
});
/**
*
* * Backtick quotes are used for Just type foo `bar` baz at the prompt.
*
* 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 `bar` ...
*/
showdown.subParser('makehtml.codeSpans', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.codeSpans.before', text, options, globals);
if (typeof(text) === 'undefined') {
text = '';
}
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('makehtml.encodeCode')(c, options, globals);
c = m1 + '' + c + '';
c = showdown.subParser('makehtml.hashHTMLSpans')(c, options, globals);
return c;
}
);
text = globals.converter._dispatch('makehtml.codeSpans.after', text, options, globals);
return text;
});
/**
* Turn Markdown link shortcuts into XHTML tags.
*/
showdown.subParser('makehtml.completeHTMLDocument', function (text, options, globals) {
'use strict';
if (!options.completeHTMLDocument) {
return text;
}
text = globals.converter._dispatch('makehtml.completeHTMLDocument.before', text, options, globals);
var doctype = 'html',
doctypeParsed = '\n',
title = '',
charset = '\n',
lang = '',
metadata = '';
if (typeof globals.metadata.parsed.doctype !== 'undefined') {
doctypeParsed = '\n';
doctype = globals.metadata.parsed.doctype.toString().toLowerCase();
if (doctype === 'html' || doctype === 'html5') {
charset = '';
}
}
for (var meta in globals.metadata.parsed) {
if (globals.metadata.parsed.hasOwnProperty(meta)) {
switch (meta.toLowerCase()) {
case 'doctype':
break;
case 'title':
title = '' + globals.metadata.parsed.title + ' \n';
break;
case 'charset':
if (doctype === 'html' || doctype === 'html5') {
charset = '\n';
} else {
charset = '\n';
}
break;
case 'language':
case 'lang':
lang = ' lang="' + globals.metadata.parsed[meta] + '"';
metadata += '\n';
break;
default:
metadata += '\n';
}
}
}
text = doctypeParsed + '\n\n' + title + charset + metadata + '\n\n' + text.trim() + '\n\n';
text = globals.converter._dispatch('makehtml.completeHTMLDocument.after', text, options, globals);
return text;
});
/**
* Convert all tabs to spaces
*/
showdown.subParser('makehtml.detab', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.detab.before', text, options, globals);
// 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, '');
text = globals.converter._dispatch('makehtml.detab.after', text, options, globals);
return text;
});
showdown.subParser('makehtml.ellipsis', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.ellipsis.before', text, options, globals);
text = text.replace(/\.\.\./g, '…');
text = globals.converter._dispatch('makehtml.ellipsis.after', text, options, globals);
return text;
});
/**
* These are all the transformations that occur *within* block-level
* tags like paragraphs, headers, and list items.
*/
showdown.subParser('makehtml.emoji', function (text, options, globals) {
'use strict';
if (!options.emoji) {
return text;
}
text = globals.converter._dispatch('makehtml.emoji.before', text, options, globals);
var emojiRgx = /:([\S]+?):/g;
text = text.replace(emojiRgx, function (wm, emojiCode) {
if (showdown.helper.emojis.hasOwnProperty(emojiCode)) {
return showdown.helper.emojis[emojiCode];
}
return wm;
});
text = globals.converter._dispatch('makehtml.emoji.after', text, options, globals);
return text;
});
/**
* Smart processing for ampersands and angle brackets that need to be encoded.
*/
showdown.subParser('makehtml.encodeAmpsAndAngles', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.encodeAmpsAndAngles.before', text, options, globals);
// 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, '<');
// Encode <
text = text.replace(/
text = text.replace(/>/g, '>');
text = globals.converter._dispatch('makehtml.encodeAmpsAndAngles.after', text, options, globals);
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('makehtml.encodeBackslashEscapes', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.encodeBackslashEscapes.before', text, options, globals);
text = text.replace(/\\(\\)/g, showdown.helper.escapeCharactersCallback);
text = text.replace(/\\([`*_{}\[\]()>#+.!~=|-])/g, showdown.helper.escapeCharactersCallback);
text = globals.converter._dispatch('makehtml.encodeBackslashEscapes.after', text, options, globals);
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('makehtml.encodeCode', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.encodeCode.before', text, options, globals);
// Encode all ampersands; HTML entities are not
// entities within a Markdown code span.
text = text
.replace(/&/g, '&')
// Do the angle bracket song and dance:
.replace(//g, '>')
// Now, escape characters that are magic in Markdown:
.replace(/([*_{}\[\]\\=~-])/g, showdown.helper.escapeCharactersCallback);
text = globals.converter._dispatch('makehtml.encodeCode.after', text, options, globals);
return text;
});
/**
* Within tags -- meaning between < and > -- encode [\ ` * _ ~ =] so they
* don't conflict with their use in Markdown for code, italics and strong.
*/
showdown.subParser('makehtml.escapeSpecialCharsWithinTagAttributes', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.escapeSpecialCharsWithinTagAttributes.before', text, options, globals);
// Build a regex to find HTML tags.
var tags = /<\/?[a-z\d_:-]+(?:[\s]+[\s\S]+?)?>/gi,
comments = /-]|-[^>])(?:[^-]|-[^-])*)--)>/gi;
text = text.replace(tags, function (wholeMatch) {
return wholeMatch
.replace(/(.)<\/?code>(?=.)/g, '$1`')
.replace(/([\\`*_~=|])/g, showdown.helper.escapeCharactersCallback);
});
text = text.replace(comments, function (wholeMatch) {
return wholeMatch
.replace(/([\\`*_~=|])/g, showdown.helper.escapeCharactersCallback);
});
text = globals.converter._dispatch('makehtml.escapeSpecialCharsWithinTagAttributes.after', text, options, globals);
return text;
});
/**
* Handle github codeblocks prior to running HashHTML so that
* HTML contained within the codeblock gets escaped properly
* Example:
* ```ruby
* def hello_world(x)
* puts "Hello, #{x}"
* end
* ```
*/
showdown.subParser('makehtml.githubCodeBlocks', function (text, options, globals) {
'use strict';
// early exit if option is not enabled
if (!options.ghCodeBlocks) {
return text;
}
text = globals.converter._dispatch('makehtml.githubCodeBlocks.before', text, options, globals);
text += '¨0';
text = text.replace(/(?:^|\n)(```+|~~~+)([^\s`~]*)\n([\s\S]*?)\n\1/g, function (wholeMatch, delim, language, codeblock) {
var end = (options.omitExtraWLInCodeBlocks) ? '' : '\n';
// First parse the github code block
codeblock = showdown.subParser('makehtml.encodeCode')(codeblock, options, globals);
codeblock = showdown.subParser('makehtml.detab')(codeblock, options, globals);
codeblock = codeblock.replace(/^\n+/g, ''); // trim leading newlines
codeblock = codeblock.replace(/\n+$/g, ''); // trim trailing whitespace
codeblock = '' + codeblock + end + '
';
codeblock = showdown.subParser('makehtml.hashBlock')(codeblock, options, globals);
// Since GHCodeblocks can be false positives, we need to
// store the primitive text and the parsed text in a global var,
// and then return a token
return '\n\n¨G' + (globals.ghCodeBlocks.push({text: wholeMatch, codeblock: codeblock}) - 1) + 'G\n\n';
});
// attacklab: strip sentinel
text = text.replace(/¨0/, '');
return globals.converter._dispatch('makehtml.githubCodeBlocks.after', text, options, globals);
});
showdown.subParser('makehtml.hashBlock', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.hashBlock.before', text, options, globals);
text = text.replace(/(^\n+|\n+$)/g, '');
text = '\n\n¨K' + (globals.gHtmlBlocks.push(text) - 1) + 'K\n\n';
text = globals.converter._dispatch('makehtml.hashBlock.after', text, options, globals);
return text;
});
/**
* Hash and escape elements that should not be parsed as markdown
*/
showdown.subParser('makehtml.hashCodeTags', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.hashCodeTags.before', text, options, globals);
var repFunc = function (wholeMatch, match, left, right) {
var codeblock = left + showdown.subParser('makehtml.encodeCode')(match, options, globals) + right;
return '¨C' + (globals.gHtmlSpans.push(codeblock) - 1) + 'C';
};
// Hash naked
text = showdown.helper.replaceRecursiveRegExp(text, repFunc, ']*>', ' ', 'gim');
text = globals.converter._dispatch('makehtml.hashCodeTags.after', text, options, globals);
return text;
});
showdown.subParser('makehtml.hashElement', function (text, options, globals) {
'use strict';
return function (wholeMatch, m1) {
var blockText = m1;
// Undo double lines
blockText = blockText.replace(/\n\n/g, '\n');
blockText = blockText.replace(/^\n/, '');
// strip trailing blank lines
blockText = blockText.replace(/\n+$/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('makehtml.hashHTMLBlocks', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.hashHTMLBlocks.before', text, options, globals);
var blockTags = [
'pre',
'div',
'h1',
'h2',
'h3',
'h4',
'h5',
'h6',
'blockquote',
'table',
'dl',
'ol',
'ul',
'script',
'noscript',
'form',
'fieldset',
'iframe',
'math',
'style',
'section',
'header',
'footer',
'nav',
'article',
'aside',
'address',
'audio',
'canvas',
'figure',
'hgroup',
'output',
'video',
'p'
],
repFunc = function (wholeMatch, match, left, right) {
var txt = wholeMatch;
// check if this html element is marked as markdown
// if so, it's contents should be parsed as markdown
if (left.search(/\bmarkdown\b/) !== -1) {
txt = left + globals.converter.makeHtml(match) + right;
}
return '\n\n¨K' + (globals.gHtmlBlocks.push(txt) - 1) + 'K\n\n';
};
if (options.backslashEscapesHTMLTags) {
// encode backslash escaped HTML tags
text = text.replace(/\\<(\/?[^>]+?)>/g, function (wm, inside) {
return '<' + inside + '>';
});
}
// hash HTML Blocks
for (var i = 0; i < blockTags.length; ++i) {
var opTagPos,
rgx1 = new RegExp('^ {0,3}(<' + blockTags[i] + '\\b[^>]*>)', 'im'),
patLeft = '<' + blockTags[i] + '\\b[^>]*>',
patRight = '';
// 1. Look for the first position of the first opening HTML tag in the text
while ((opTagPos = showdown.helper.regexIndexOf(text, rgx1)) !== -1) {
// if the HTML tag is \ escaped, we need to escape it and break
//2. Split the text in that position
var subTexts = showdown.helper.splitAtIndex(text, opTagPos),
//3. Match recursively
newSubText1 = showdown.helper.replaceRecursiveRegExp(subTexts[1], repFunc, patLeft, patRight, 'im');
// prevent an infinite loop
if (newSubText1 === subTexts[1]) {
break;
}
text = subTexts[0].concat(newSubText1);
}
}
// HR SPECIAL CASE
text = text.replace(/(\n {0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,
showdown.subParser('makehtml.hashElement')(text, options, globals));
// Special case for standalone HTML comments
text = showdown.helper.replaceRecursiveRegExp(text, function (txt) {
return '\n\n¨K' + (globals.gHtmlBlocks.push(txt) - 1) + 'K\n\n';
}, '^ {0,3}', 'gm');
// PHP and ASP-style processor instructions ( and <%...%>)
text = text.replace(/(?:\n\n)( {0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,
showdown.subParser('makehtml.hashElement')(text, options, globals));
text = globals.converter._dispatch('makehtml.hashHTMLBlocks.after', text, options, globals);
return text;
});
/**
* Hash span elements that should not be parsed as markdown
*/
showdown.subParser('makehtml.hashHTMLSpans', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.hashHTMLSpans.before', text, options, globals);
function hashHTMLSpan (html) {
return '¨C' + (globals.gHtmlSpans.push(html) - 1) + 'C';
}
// Hash Self Closing tags
text = text.replace(/<[^>]+?\/>/gi, function (wm) {
return hashHTMLSpan(wm);
});
// Hash tags without properties
text = text.replace(/<([^>]+?)>[\s\S]*?<\/\1>/g, function (wm) {
return hashHTMLSpan(wm);
});
// Hash tags with properties
text = text.replace(/<([^>]+?)\s[^>]+?>[\s\S]*?<\/\1>/g, function (wm) {
return hashHTMLSpan(wm);
});
// Hash self closing tags without />
text = text.replace(/<[^>]+?>/gi, function (wm) {
return hashHTMLSpan(wm);
});
/*showdown.helper.matchRecursiveRegExp(text, ']*>', ' ', 'gi');*/
text = globals.converter._dispatch('makehtml.hashHTMLSpans.after', text, options, globals);
return text;
});
/**
* Unhash HTML spans
*/
showdown.subParser('makehtml.unhashHTMLSpans', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.unhashHTMLSpans.before', text, options, globals);
for (var i = 0; i < globals.gHtmlSpans.length; ++i) {
var repText = globals.gHtmlSpans[i],
// limiter to prevent infinite loop (assume 10 as limit for recurse)
limit = 0;
while (/¨C(\d+)C/.test(repText)) {
var num = RegExp.$1;
repText = repText.replace('¨C' + num + 'C', globals.gHtmlSpans[num]);
if (limit === 10) {
console.error('maximum nesting of 10 spans reached!!!');
break;
}
++limit;
}
text = text.replace('¨C' + i + 'C', repText);
}
text = globals.converter._dispatch('makehtml.unhashHTMLSpans.after', text, options, globals);
return text;
});
/**
* Hash and escape elements that should not be parsed as markdown
*/
showdown.subParser('makehtml.hashPreCodeTags', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.hashPreCodeTags.before', text, options, globals);
var repFunc = function (wholeMatch, match, left, right) {
// encode html entities
var codeblock = left + showdown.subParser('makehtml.encodeCode')(match, options, globals) + right;
return '\n\n¨G' + (globals.ghCodeBlocks.push({text: wholeMatch, codeblock: codeblock}) - 1) + 'G\n\n';
};
// Hash
text = showdown.helper.replaceRecursiveRegExp(text, repFunc, '^ {0,3}]*>\\s*]*>', '^ {0,3} \\s*
', 'gim');
text = globals.converter._dispatch('makehtml.hashPreCodeTags.after', text, options, globals);
return text;
});
showdown.subParser('makehtml.headers', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.headers.before', text, options, globals);
var headerLevelStart = (isNaN(parseInt(options.headerLevelStart))) ? 1 : parseInt(options.headerLevelStart),
// Set text-style headers:
// Header 1
// ========
//
// Header 2
// --------
//
setextRegexH1 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n={2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n=+[ \t]*\n+/gm,
setextRegexH2 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n-{2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n-+[ \t]*\n+/gm;
text = text.replace(setextRegexH1, function (wholeMatch, m1) {
var spanGamut = showdown.subParser('makehtml.spanGamut')(m1, options, globals),
hID = (options.noHeaderId) ? '' : ' id="' + headerId(m1) + '"',
hLevel = headerLevelStart,
hashBlock = '' + spanGamut + ' ';
return showdown.subParser('makehtml.hashBlock')(hashBlock, options, globals);
});
text = text.replace(setextRegexH2, function (matchFound, m1) {
var spanGamut = showdown.subParser('makehtml.spanGamut')(m1, options, globals),
hID = (options.noHeaderId) ? '' : ' id="' + headerId(m1) + '"',
hLevel = headerLevelStart + 1,
hashBlock = '' + spanGamut + ' ';
return showdown.subParser('makehtml.hashBlock')(hashBlock, options, globals);
});
// atx-style headers:
// # Header 1
// ## Header 2
// ## Header 2 with closing hashes ##
// ...
// ###### Header 6
//
var atxStyle = (options.requireSpaceBeforeHeadingText) ? /^(#{1,6})[ \t]+(.+?)[ \t]*#*\n+/gm : /^(#{1,6})[ \t]*(.+?)[ \t]*#*\n+/gm;
text = text.replace(atxStyle, function (wholeMatch, m1, m2) {
var hText = m2;
if (options.customizedHeaderId) {
hText = m2.replace(/\s?\{([^{]+?)}\s*$/, '');
}
var span = showdown.subParser('makehtml.spanGamut')(hText, options, globals),
hID = (options.noHeaderId) ? '' : ' id="' + headerId(m2) + '"',
hLevel = headerLevelStart - 1 + m1.length,
header = '' + span + ' ';
return showdown.subParser('makehtml.hashBlock')(header, options, globals);
});
function headerId (m) {
var title,
prefix;
// It is separate from other options to allow combining prefix and customized
if (options.customizedHeaderId) {
var match = m.match(/\{([^{]+?)}\s*$/);
if (match && match[1]) {
m = match[1];
}
}
title = m;
// Prefix id to prevent causing inadvertent pre-existing style matches.
if (showdown.helper.isString(options.prefixHeaderId)) {
prefix = options.prefixHeaderId;
} else if (options.prefixHeaderId === true) {
prefix = 'section-';
} else {
prefix = '';
}
if (!options.rawPrefixHeaderId) {
title = prefix + title;
}
if (options.ghCompatibleHeaderId) {
title = title
.replace(/ /g, '-')
// replace previously escaped chars (&, ¨ and $)
.replace(/&/g, '')
.replace(/¨T/g, '')
.replace(/¨D/g, '')
// replace rest of the chars (&~$ are repeated as they might have been escaped)
// borrowed from github's redcarpet (some they should produce similar results)
.replace(/[&+$,\/:;=?@"#{}|^¨~\[\]`\\*)(%.!'<>]/g, '')
.toLowerCase();
} else if (options.rawHeaderId) {
title = title
.replace(/ /g, '-')
// replace previously escaped chars (&, ¨ and $)
.replace(/&/g, '&')
.replace(/¨T/g, '¨')
.replace(/¨D/g, '$')
// replace " and '
.replace(/["']/g, '-')
.toLowerCase();
} else {
title = title
.replace(/[^\w]/g, '')
.toLowerCase();
}
if (options.rawPrefixHeaderId) {
title = prefix + title;
}
if (globals.hashLinkCounts[title]) {
title = title + '-' + (globals.hashLinkCounts[title]++);
} else {
globals.hashLinkCounts[title] = 1;
}
return title;
}
text = globals.converter._dispatch('makehtml.headers.after', text, options, globals);
return text;
});
/**
* Turn Markdown link shortcuts into XHTML tags.
*/
showdown.subParser('makehtml.horizontalRule', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.horizontalRule.before', text, options, globals);
var key = showdown.subParser('makehtml.hashBlock')('
', 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 = globals.converter._dispatch('makehtml.horizontalRule.after', text, options, globals);
return text;
});
/**
* Turn Markdown image shortcuts into ![]()
tags.
*/
showdown.subParser('makehtml.images', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.images.before', text, options, globals);
var inlineRegExp = /!\[([^\]]*?)][ \t]*()\([ \t]??(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(["'])([^"]*?)\6)?[ \t]?\)/g,
crazyRegExp = /!\[([^\]]*?)][ \t]*()\([ \t]?<([^>]*)>(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(?:(["'])([^"]*?)\6))?[ \t]?\)/g,
base64RegExp = /!\[([^\]]*?)][ \t]*()\([ \t]??(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(["'])([^"]*?)\6)?[ \t]?\)/g,
referenceRegExp = /!\[([^\]]*?)] ?(?:\n *)?\[([\s\S]*?)]()()()()()/g,
refShortcutRegExp = /!\[([^\[\]]+)]()()()()()/g;
function writeImageTagBase64 (wholeMatch, altText, linkId, url, width, height, m5, title) {
url = url.replace(/\s/g, '');
return writeImageTag (wholeMatch, altText, linkId, url, width, height, m5, title);
}
function writeImageTag (wholeMatch, altText, linkId, url, width, height, m5, title) {
var gUrls = globals.gUrls,
gTitles = globals.gTitles,
gDims = globals.gDimensions;
linkId = linkId.toLowerCase();
if (!title) {
title = '';
}
// Special case for explicit empty url
if (wholeMatch.search(/\(? ?(['"].*['"])?\)$/m) > -1) {
url = '';
} else if (url === '' || url === null) {
if (linkId === '' || linkId === null) {
// lower-case and turn embedded newlines into spaces
linkId = altText.toLowerCase().replace(/ ?\n/g, ' ');
}
url = '#' + linkId;
if (!showdown.helper.isUndefined(gUrls[linkId])) {
url = gUrls[linkId];
if (!showdown.helper.isUndefined(gTitles[linkId])) {
title = gTitles[linkId];
}
if (!showdown.helper.isUndefined(gDims[linkId])) {
width = gDims[linkId].width;
height = gDims[linkId].height;
}
} else {
return wholeMatch;
}
}
altText = altText
.replace(/"/g, '"')
//altText = showdown.helper.escapeCharacters(altText, '*_', false);
.replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);
//url = showdown.helper.escapeCharacters(url, '*_', false);
url = url.replace(showdown.helper.regexes.asteriskDashAndColon, showdown.helper.escapeCharactersCallback);
var result = '
x "optional title")
// base64 encoded images
text = text.replace(base64RegExp, writeImageTagBase64);
// cases with crazy urls like ./image/cat1).png
text = text.replace(crazyRegExp, writeImageTag);
// normal cases
text = text.replace(inlineRegExp, writeImageTag);
// handle reference-style shortcuts: ![img text]
text = text.replace(refShortcutRegExp, writeImageTag);
text = globals.converter._dispatch('makehtml.images.after', text, options, globals);
return text;
});
showdown.subParser('makehtml.italicsAndBold', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.italicsAndBold.before', text, options, globals);
// it's faster to have 3 separate regexes for each case than have just one
// because of backtracing, in some cases, it could lead to an exponential effect
// called "catastrophic backtrace". Ominous!
function parseInside (txt, left, right) {
/*
if (options.simplifiedAutoLink) {
txt = showdown.subParser('simplifiedAutoLinks')(txt, options, globals);
}
*/
return left + txt + right;
}
// Parse underscores
if (options.literalMidWordUnderscores) {
text = text.replace(/\b___(\S[\s\S]*)___\b/g, function (wm, txt) {
return parseInside (txt, '', '');
});
text = text.replace(/\b__(\S[\s\S]*)__\b/g, function (wm, txt) {
return parseInside (txt, '', '');
});
text = text.replace(/\b_(\S[\s\S]*?)_\b/g, function (wm, txt) {
return parseInside (txt, '', '');
});
} else {
text = text.replace(/___(\S[\s\S]*?)___/g, function (wm, m) {
return (/\S$/.test(m)) ? parseInside (m, '', '') : wm;
});
text = text.replace(/__(\S[\s\S]*?)__/g, function (wm, m) {
return (/\S$/.test(m)) ? parseInside (m, '', '') : wm;
});
text = text.replace(/_([^\s_][\s\S]*?)_/g, function (wm, m) {
// !/^_[^_]/.test(m) - test if it doesn't start with __ (since it seems redundant, we removed it)
return (/\S$/.test(m)) ? parseInside (m, '', '') : wm;
});
}
// Now parse asterisks
if (options.literalMidWordAsterisks) {
text = text.replace(/([^*]|^)\B\*\*\*(\S[\s\S]+?)\*\*\*\B(?!\*)/g, function (wm, lead, txt) {
return parseInside (txt, lead + '', '');
});
text = text.replace(/([^*]|^)\B\*\*(\S[\s\S]+?)\*\*\B(?!\*)/g, function (wm, lead, txt) {
return parseInside (txt, lead + '', '');
});
text = text.replace(/([^*]|^)\B\*(\S[\s\S]+?)\*\B(?!\*)/g, function (wm, lead, txt) {
return parseInside (txt, lead + '', '');
});
} else {
text = text.replace(/\*\*\*(\S[\s\S]*?)\*\*\*/g, function (wm, m) {
return (/\S$/.test(m)) ? parseInside (m, '', '') : wm;
});
text = text.replace(/\*\*(\S[\s\S]*?)\*\*/g, function (wm, m) {
return (/\S$/.test(m)) ? parseInside (m, '', '') : wm;
});
text = text.replace(/\*([^\s*][\s\S]*?)\*/g, function (wm, m) {
// !/^\*[^*]/.test(m) - test if it doesn't start with ** (since it seems redundant, we removed it)
return (/\S$/.test(m)) ? parseInside (m, '', '') : wm;
});
}
text = globals.converter._dispatch('makehtml.italicsAndBold.after', text, options, globals);
return text;
});
/**
* Form HTML ordered (numbered) and unordered (bulleted) lists.
*/
showdown.subParser('makehtml.lists', function (text, options, globals) {
'use strict';
/**
* Process the contents of a single ordered or unordered list, splitting it
* into individual list items.
* @param {string} listStr
* @param {boolean} trimTrailing
* @returns {string}
*/
function processListItems (listStr, trimTrailing) {
// The $g_list_level global keeps track of when we're inside a list.
// Each time we enter a list, we increment it; when we leave a list,
// we decrement. If it's zero, we're not in a list anymore.
//
// We do this because when we're not inside a list, we want to treat
// something like this:
//
// I recommend upgrading to version
// 8. Oops, now this line is treated
// as a sub-list.
//
// As a single paragraph, despite the fact that the second line starts
// with a digit-period-space sequence.
//
// Whereas when we're inside a list (or sub-list), that line will be
// treated as the start of a sub-list. What a kludge, huh? This is
// an aspect of Markdown's syntax that's hard to parse perfectly
// without resorting to mind-reading. Perhaps the solution is to
// change the syntax rules such that sub-lists must start with a
// starting cardinal number; e.g. "1." or "a.".
globals.gListLevel++;
// trim trailing blank lines:
listStr = listStr.replace(/\n{2,}$/, '\n');
// attacklab: add sentinel to emulate \z
listStr += '¨0';
var rgx = /(\n)?(^ {0,3})([*+-]|\d+[.])[ \t]+((\[(x|X| )?])?[ \t]*[^\r]+?(\n{1,2}))(?=\n*(¨0| {0,3}([*+-]|\d+[.])[ \t]+))/gm,
isParagraphed = (/\n[ \t]*\n(?!¨0)/.test(listStr));
// Since version 1.5, nesting sublists requires 4 spaces (or 1 tab) indentation,
// which is a syntax breaking change
// activating this option reverts to old behavior
if (options.disableForced4SpacesIndentedSublists) {
rgx = /(\n)?(^ {0,3})([*+-]|\d+[.])[ \t]+((\[(x|X| )?])?[ \t]*[^\r]+?(\n{1,2}))(?=\n*(¨0|\2([*+-]|\d+[.])[ \t]+))/gm;
}
listStr = listStr.replace(rgx, function (wholeMatch, m1, m2, m3, m4, taskbtn, checked) {
checked = (checked && checked.trim() !== '');
var item = showdown.subParser('makehtml.outdent')(m4, options, globals),
bulletStyle = '';
// Support for github tasklists
if (taskbtn && options.tasklists) {
bulletStyle = ' class="task-list-item" style="list-style-type: none;"';
item = item.replace(/^[ \t]*\[(x|X| )?]/m, function () {
var otp = 'a
// instead of:
// - - - a
// So, to prevent it, we will put a marker (¨A)in the beginning of the line
// Kind of hackish/monkey patching, but seems more effective than overcomplicating the list parser
item = item.replace(/^([-*+]|\d\.)[ \t]+[\S\n ]*/g, function (wm2) {
return '¨A' + wm2;
});
// m1 - Leading line or
// Has a double return (multi paragraph) or
// Has sublist
if (m1 || (item.search(/\n{2,}/) > -1)) {
item = showdown.subParser('makehtml.githubCodeBlocks')(item, options, globals);
item = showdown.subParser('makehtml.blockGamut')(item, options, globals);
} else {
// Recursion for sub-lists:
item = showdown.subParser('makehtml.lists')(item, options, globals);
item = item.replace(/\n$/, ''); // chomp(item)
item = showdown.subParser('makehtml.hashHTMLBlocks')(item, options, globals);
// Colapse double linebreaks
item = item.replace(/\n\n+/g, '\n\n');
if (isParagraphed) {
item = showdown.subParser('makehtml.paragraphs')(item, options, globals);
} else {
item = showdown.subParser('makehtml.spanGamut')(item, options, globals);
}
}
// now we need to remove the marker (¨A)
item = item.replace('¨A', '');
// we can finally wrap the line in list item tags
item = '' + item + '\n';
return item;
});
// attacklab: strip sentinel
listStr = listStr.replace(/¨0/g, '');
globals.gListLevel--;
if (trimTrailing) {
listStr = listStr.replace(/\s+$/, '');
}
return listStr;
}
function styleStartNumber (list, listType) {
// check if ol and starts by a number different than 1
if (listType === 'ol') {
var res = list.match(/^ *(\d+)\./);
if (res && res[1] !== '1') {
return ' start="' + res[1] + '"';
}
}
return '';
}
/**
* Check and parse consecutive lists (better fix for issue #142)
* @param {string} list
* @param {string} listType
* @param {boolean} trimTrailing
* @returns {string}
*/
function parseConsecutiveLists (list, listType, trimTrailing) {
// check if we caught 2 or more consecutive lists by mistake
// we use the counterRgx, meaning if listType is UL we look for OL and vice versa
var olRgx = (options.disableForced4SpacesIndentedSublists) ? /^ ?\d+\.[ \t]/gm : /^ {0,3}\d+\.[ \t]/gm,
ulRgx = (options.disableForced4SpacesIndentedSublists) ? /^ ?[*+-][ \t]/gm : /^ {0,3}[*+-][ \t]/gm,
counterRxg = (listType === 'ul') ? olRgx : ulRgx,
result = '';
if (list.search(counterRxg) !== -1) {
(function parseCL (txt) {
var pos = txt.search(counterRxg),
style = styleStartNumber(list, listType);
if (pos !== -1) {
// slice
result += '\n\n<' + listType + style + '>\n' + processListItems(txt.slice(0, pos), !!trimTrailing) + '\n';
// invert counterType and listType
listType = (listType === 'ul') ? 'ol' : 'ul';
counterRxg = (listType === 'ul') ? olRgx : ulRgx;
//recurse
parseCL(txt.slice(pos));
} else {
result += '\n\n<' + listType + style + '>\n' + processListItems(txt, !!trimTrailing) + '\n';
}
})(list);
} else {
var style = styleStartNumber(list, listType);
result = '\n\n<' + listType + style + '>\n' + processListItems(list, !!trimTrailing) + '\n';
}
return result;
}
/** Start of list parsing **/
text = globals.converter._dispatch('lists.before', text, options, globals);
// add sentinel to hack around khtml/safari bug:
// http://bugs.webkit.org/show_bug.cgi?id=11231
text += '¨0';
if (globals.gListLevel) {
text = text.replace(/^(( {0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(¨0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm,
function (wholeMatch, list, m2) {
var listType = (m2.search(/[*+-]/g) > -1) ? 'ul' : 'ol';
return parseConsecutiveLists(list, listType, true);
}
);
} else {
text = text.replace(/(\n\n|^\n?)(( {0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(¨0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm,
function (wholeMatch, m1, list, m3) {
var listType = (m3.search(/[*+-]/g) > -1) ? 'ul' : 'ol';
return parseConsecutiveLists(list, listType, false);
}
);
}
// strip sentinel
text = text.replace(/¨0/, '');
text = globals.converter._dispatch('makehtml.lists.after', text, options, globals);
return text;
});
/**
* Parse metadata at the top of the document
*/
showdown.subParser('makehtml.metadata', function (text, options, globals) {
'use strict';
if (!options.metadata) {
return text;
}
text = globals.converter._dispatch('makehtml.metadata.before', text, options, globals);
function parseMetadataContents (content) {
// raw is raw so it's not changed in any way
globals.metadata.raw = content;
// escape chars forbidden in html attributes
// double quotes
content = content
// ampersand first
.replace(/&/g, '&')
// double quotes
.replace(/"/g, '"');
content = content.replace(/\n {4}/g, ' ');
content.replace(/^([\S ]+): +([\s\S]+?)$/gm, function (wm, key, value) {
globals.metadata.parsed[key] = value;
return '';
});
}
text = text.replace(/^\s*«««+(\S*?)\n([\s\S]+?)\n»»»+\n/, function (wholematch, format, content) {
parseMetadataContents(content);
return '¨M';
});
text = text.replace(/^\s*---+(\S*?)\n([\s\S]+?)\n---+\n/, function (wholematch, format, content) {
if (format) {
globals.metadata.format = format;
}
parseMetadataContents(content);
return '¨M';
});
text = text.replace(/¨M/g, '');
text = globals.converter._dispatch('makehtml.metadata.after', text, options, globals);
return text;
});
/**
* Remove one level of line-leading tabs or spaces
*/
showdown.subParser('makehtml.outdent', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.outdent.before', text, options, globals);
// attacklab: hack around Konqueror 3.5.4 bug:
// "----------bug".replace(/^-/g,"") == "bug"
text = text.replace(/^(\t|[ ]{1,4})/gm, '¨0'); // attacklab: g_tab_width
// attacklab: clean up hack
text = text.replace(/¨0/g, '');
text = globals.converter._dispatch('makehtml.outdent.after', text, options, globals);
return text;
});
/**
*
*/
showdown.subParser('makehtml.paragraphs', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.paragraphs.before', text, options, globals);
// Strip leading and trailing lines:
text = text.replace(/^\n+/g, '');
text = text.replace(/\n+$/g, '');
var grafs = text.split(/\n{2,}/g),
grafsOut = [],
end = grafs.length; // Wrap tags
for (var i = 0; i < end; i++) {
var str = grafs[i];
// if this is an HTML marker, copy it
if (str.search(/¨(K|G)(\d+)\1/g) >= 0) {
grafsOut.push(str);
// test for presence of characters to prevent empty lines being parsed
// as paragraphs (resulting in undesired extra empty paragraphs)
} else if (str.search(/\S/) >= 0) {
str = showdown.subParser('makehtml.spanGamut')(str, options, globals);
str = str.replace(/^([ \t]*)/g, '
');
str += '
';
grafsOut.push(str);
}
}
/** Unhashify HTML blocks */
end = grafsOut.length;
for (i = 0; i < end; i++) {
var blockText = '',
grafsOutIt = grafsOut[i],
codeFlag = false;
// if this is a marker for an html block...
// use RegExp.test instead of string.search because of QML bug
while (/¨(K|G)(\d+)\1/.test(grafsOutIt)) {
var delim = RegExp.$1,
num = RegExp.$2;
if (delim === 'K') {
blockText = globals.gHtmlBlocks[num];
} else {
// we need to check if ghBlock is a false positive
if (codeFlag) {
// use encoded version of all text
blockText = showdown.subParser('makehtml.encodeCode')(globals.ghCodeBlocks[num].text, options, globals);
} else {
blockText = globals.ghCodeBlocks[num].codeblock;
}
}
blockText = blockText.replace(/\$/g, '$$$$'); // Escape any dollar signs
grafsOutIt = grafsOutIt.replace(/(\n\n)?¨(K|G)\d+\2(\n\n)?/, blockText);
// Check if grafsOutIt is a pre->code
if (/^]*>\s*]*>/.test(grafsOutIt)) {
codeFlag = true;
}
}
grafsOut[i] = grafsOutIt;
}
text = grafsOut.join('\n');
// Strip leading and trailing lines:
text = text.replace(/^\n+/g, '');
text = text.replace(/\n+$/g, '');
return globals.converter._dispatch('makehtml.paragraphs.after', text, options, globals);
});
/**
* Run extension
*/
showdown.subParser('makehtml.runExtension', function (ext, text, options, globals) {
'use strict';
if (ext.filter) {
text = ext.filter(text, globals.converter, options);
} else if (ext.regex) {
// TODO remove this when old extension loading mechanism is deprecated
var re = ext.regex;
if (!(re instanceof RegExp)) {
re = new RegExp(re, 'g');
}
text = text.replace(re, ext.replace);
}
return text;
});
/**
* These are all the transformations that occur *within* block-level
* tags like paragraphs, headers, and list items.
*/
showdown.subParser('makehtml.spanGamut', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('smakehtml.panGamut.before', text, options, globals);
text = showdown.subParser('makehtml.codeSpans')(text, options, globals);
text = showdown.subParser('makehtml.escapeSpecialCharsWithinTagAttributes')(text, options, globals);
text = showdown.subParser('makehtml.encodeBackslashEscapes')(text, options, globals);
// Process anchor and image tags. Images must come first,
// because ![foo][f] looks like an anchor.
text = showdown.subParser('makehtml.images')(text, options, globals);
text = showdown.subParser('makehtml.anchors')(text, options, globals);
// Make links out of things like `).
text = showdown.subParser('makehtml.autoLinks')(text, options, globals);
text = showdown.subParser('makehtml.simplifiedAutoLinks')(text, options, globals);
text = showdown.subParser('makehtml.emoji')(text, options, globals);
text = showdown.subParser('makehtml.underline')(text, options, globals);
text = showdown.subParser('makehtml.italicsAndBold')(text, options, globals);
text = showdown.subParser('makehtml.strikethrough')(text, options, globals);
text = showdown.subParser('makehtml.ellipsis')(text, options, globals);
// we need to hash HTML tags inside spans
text = showdown.subParser('makehtml.hashHTMLSpans')(text, options, globals);
// now we encode amps and angles
text = showdown.subParser('makehtml.encodeAmpsAndAngles')(text, options, globals);
// Do hard breaks
if (options.simpleLineBreaks) {
// GFM style hard breaks
// only add line breaks if the text does not contain a block (special case for lists)
if (!/\n\n¨K/.test(text)) {
text = text.replace(/\n+/g, '
\n');
}
} else {
// Vanilla hard breaks
text = text.replace(/ +\n/g, '
\n');
}
text = globals.converter._dispatch('makehtml.spanGamut.after', text, options, globals);
return text;
});
showdown.subParser('makehtml.strikethrough', function (text, options, globals) {
'use strict';
function parseInside (txt) {
if (options.simplifiedAutoLink) {
txt = showdown.subParser('makehtml.simplifiedAutoLinks')(txt, options, globals);
}
return '' + txt + '';
}
if (options.strikethrough) {
text = globals.converter._dispatch('makehtml.strikethrough.before', text, options, globals);
text = text.replace(/(?:~){2}([\s\S]+?)(?:~){2}/g, function (wm, txt) { return parseInside(txt); });
text = globals.converter._dispatch('makehtml.strikethrough.after', text, options, globals);
}
return text;
});
/**
* Strips link definitions from text, stores the URLs and titles in
* hash references.
* Link defs are in the form: ^[id]: url "optional title"
*/
showdown.subParser('makehtml.stripLinkDefinitions', function (text, options, globals) {
'use strict';
var regex = /^ {0,3}\[(.+)]:[ \t]*\n?[ \t]*\s]+)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*\n?[ \t]*(?:(\n*)["|'(](.+?)["|')][ \t]*)?(?:\n+|(?=¨0))/gm,
base64Regex = /^ {0,3}\[(.+)]:[ \t]*\n?[ \t]*?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*\n?[ \t]*(?:(\n*)["|'(](.+?)["|')][ \t]*)?(?:\n\n|(?=¨0)|(?=\n\[))/gm;
// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
text += '¨0';
var replaceFunc = function (wholeMatch, linkId, url, width, height, blankLines, title) {
linkId = linkId.toLowerCase();
if (url.match(/^data:.+?\/.+?;base64,/)) {
// remove newlines
globals.gUrls[linkId] = url.replace(/\s/g, '');
} else {
globals.gUrls[linkId] = showdown.subParser('makehtml.encodeAmpsAndAngles')(url, options, globals); // Link IDs are case-insensitive
}
if (blankLines) {
// Oops, found blank lines, so it's not a title.
// Put back the parenthetical statement we stole.
return blankLines + title;
} else {
if (title) {
globals.gTitles[linkId] = title.replace(/"|'/g, '"');
}
if (options.parseImgDimensions && width && height) {
globals.gDimensions[linkId] = {
width: width,
height: height
};
}
}
// Completely remove the definition from the text
return '';
};
// first we try to find base64 link references
text = text.replace(base64Regex, replaceFunc);
text = text.replace(regex, replaceFunc);
// attacklab: strip sentinel
text = text.replace(/¨0/, '');
return text;
});
showdown.subParser('makehtml.tables', function (text, options, globals) {
'use strict';
if (!options.tables) {
return text;
}
var tableRgx = /^ {0,3}\|?.+\|.+\n {0,3}\|?[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*:?[ \t]*(?:[-=]){2,}[\s\S]+?(?:\n\n|¨0)/gm,
//singeColTblRgx = /^ {0,3}\|.+\|\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n(?: {0,3}\|.+\|\n)+(?:\n\n|¨0)/gm;
singeColTblRgx = /^ {0,3}\|.+\|[ \t]*\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n( {0,3}\|.+\|[ \t]*\n)*(?:\n|¨0)/gm;
function parseStyles (sLine) {
if (/^:[ \t]*--*$/.test(sLine)) {
return ' style="text-align:left;"';
} else if (/^--*[ \t]*:[ \t]*$/.test(sLine)) {
return ' style="text-align:right;"';
} else if (/^:[ \t]*--*[ \t]*:$/.test(sLine)) {
return ' style="text-align:center;"';
} else {
return '';
}
}
function parseHeaders (header, style) {
var id = '';
header = header.trim();
// support both tablesHeaderId and tableHeaderId due to error in documentation so we don't break backwards compatibility
if (options.tablesHeaderId || options.tableHeaderId) {
id = ' id="' + header.replace(/ /g, '_').toLowerCase() + '"';
}
header = showdown.subParser('makehtml.spanGamut')(header, options, globals);
return '' + header + '\n';
}
function parseCells (cell, style) {
var subText = showdown.subParser('makehtml.spanGamut')(cell, options, globals);
return '' + subText + '\n';
}
function buildTable (headers, cells) {
var tb = '\n\n\n',
tblLgn = headers.length;
for (var i = 0; i < tblLgn; ++i) {
tb += headers[i];
}
tb += ' \n\n\n';
for (i = 0; i < cells.length; ++i) {
tb += '\n';
for (var ii = 0; ii < tblLgn; ++ii) {
tb += cells[i][ii];
}
tb += ' \n';
}
tb += '\n
\n';
return tb;
}
function parseTable (rawTable) {
var i, tableLines = rawTable.split('\n');
for (i = 0; i < tableLines.length; ++i) {
// strip wrong first and last column if wrapped tables are used
if (/^ {0,3}\|/.test(tableLines[i])) {
tableLines[i] = tableLines[i].replace(/^ {0,3}\|/, '');
}
if (/\|[ \t]*$/.test(tableLines[i])) {
tableLines[i] = tableLines[i].replace(/\|[ \t]*$/, '');
}
// parse code spans first, but we only support one line code spans
tableLines[i] = showdown.subParser('makehtml.codeSpans')(tableLines[i], options, globals);
}
var rawHeaders = tableLines[0].split('|').map(function (s) { return s.trim();}),
rawStyles = tableLines[1].split('|').map(function (s) { return s.trim();}),
rawCells = [],
headers = [],
styles = [],
cells = [];
tableLines.shift();
tableLines.shift();
for (i = 0; i < tableLines.length; ++i) {
if (tableLines[i].trim() === '') {
continue;
}
rawCells.push(
tableLines[i]
.split('|')
.map(function (s) {
return s.trim();
})
);
}
if (rawHeaders.length < rawStyles.length) {
return rawTable;
}
for (i = 0; i < rawStyles.length; ++i) {
styles.push(parseStyles(rawStyles[i]));
}
for (i = 0; i < rawHeaders.length; ++i) {
if (showdown.helper.isUndefined(styles[i])) {
styles[i] = '';
}
headers.push(parseHeaders(rawHeaders[i], styles[i]));
}
for (i = 0; i < rawCells.length; ++i) {
var row = [];
for (var ii = 0; ii < headers.length; ++ii) {
if (showdown.helper.isUndefined(rawCells[i][ii])) {
}
row.push(parseCells(rawCells[i][ii], styles[ii]));
}
cells.push(row);
}
return buildTable(headers, cells);
}
text = globals.converter._dispatch('makehtml.tables.before', text, options, globals);
// find escaped pipe characters
text = text.replace(/\\(\|)/g, showdown.helper.escapeCharactersCallback);
// parse multi column tables
text = text.replace(tableRgx, parseTable);
// parse one column tables
text = text.replace(singeColTblRgx, parseTable);
text = globals.converter._dispatch('makehtml.tables.after', text, options, globals);
return text;
});
showdown.subParser('makehtml.underline', function (text, options, globals) {
'use strict';
if (!options.underline) {
return text;
}
text = globals.converter._dispatch('makehtml.underline.before', text, options, globals);
if (options.literalMidWordUnderscores) {
text = text.replace(/\b_?__(\S[\s\S]*)___?\b/g, function (wm, txt) {
return '' + txt + '';
});
} else {
text = text.replace(/_?__(\S[\s\S]*?)___?/g, function (wm, m) {
return (/\S$/.test(m)) ? '' + m + '' : wm;
});
}
// escape remaining underscores to prevent them being parsed by italic and bold
text = text.replace(/(_)/g, showdown.helper.escapeCharactersCallback);
text = globals.converter._dispatch('makehtml.underline.after', text, options, globals);
return text;
});
/**
* Swap back in all the special characters we've hidden.
*/
showdown.subParser('makehtml.unescapeSpecialChars', function (text, options, globals) {
'use strict';
text = globals.converter._dispatch('makehtml.unescapeSpecialChars.before', text, options, globals);
text = text.replace(/¨E(\d+)E/g, function (wholeMatch, m1) {
var charCodeToReplace = parseInt(m1);
return String.fromCharCode(charCodeToReplace);
});
text = globals.converter._dispatch('makehtml.unescapeSpecialChars.after', text, options, globals);
return text;
});
/**
* Created by Estevao on 31-05-2015.
*/
/**
* Showdown Converter class
* @class
* @param {object} [converterOptions]
* @returns {Converter}
*/
showdown.Converter = function (converterOptions) {
'use strict';
var
/**
* Options used by this converter
* @private
* @type {{}}
*/
options = {},
/**
* Language extensions used by this converter
* @private
* @type {Array}
*/
langExtensions = [],
/**
* Output modifiers extensions used by this converter
* @private
* @type {Array}
*/
outputModifiers = [],
/**
* Event listeners
* @private
* @type {{}}
*/
listeners = {},
/**
* The flavor set in this converter
*/
setConvFlavor = setFlavor,
/**
* Metadata of the document
* @type {{parsed: {}, raw: string, format: string}}
*/
metadata = {
parsed: {},
raw: '',
format: ''
};
_constructor();
/**
* Converter constructor
* @private
*/
function _constructor () {
converterOptions = converterOptions || {};
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];
}
}
} else {
throw Error('Converter expects the passed parameter to be an object, but ' + typeof converterOptions +
' was passed instead.');
}
if (options.extensions) {
showdown.helper.forEach(options.extensions, _parseExtension);
}
}
/**
* Parse extension
* @param {*} ext
* @param {string} [name='']
* @private
*/
function _parseExtension (ext, name) {
name = name || null;
// If it's a string, the extension was previously loaded
if (showdown.helper.isString(ext)) {
ext = showdown.helper.stdExtName(ext);
name = ext;
// LEGACY_SUPPORT CODE
if (showdown.extensions[ext]) {
console.warn('DEPRECATION WARNING: ' + ext + ' is an old extension that uses a deprecated loading method.' +
'Please inform the developer that the extension should be updated!');
legacyExtensionLoading(showdown.extensions[ext], ext);
return;
// END LEGACY SUPPORT CODE
} else if (!showdown.helper.isUndefined(extensions[ext])) {
ext = extensions[ext];
} else {
throw Error('Extension "' + ext + '" could not be loaded. It was either not found or is not a valid extension.');
}
}
if (typeof ext === 'function') {
ext = ext();
}
if (!showdown.helper.isArray(ext)) {
ext = [ext];
}
var validExt = validate(ext, name);
if (!validExt.valid) {
throw Error(validExt.error);
}
for (var i = 0; i < ext.length; ++i) {
switch (ext[i].type) {
case 'lang':
langExtensions.push(ext[i]);
break;
case 'output':
outputModifiers.push(ext[i]);
break;
}
if (ext[i].hasOwnProperty('listeners')) {
for (var ln in ext[i].listeners) {
if (ext[i].listeners.hasOwnProperty(ln)) {
listen(ln, ext[i].listeners[ln]);
}
}
}
}
}
/**
* LEGACY_SUPPORT
* @param {*} ext
* @param {string} name
*/
function legacyExtensionLoading (ext, name) {
if (typeof ext === 'function') {
ext = ext(new showdown.Converter());
}
if (!showdown.helper.isArray(ext)) {
ext = [ext];
}
var valid = validate(ext, name);
if (!valid.valid) {
throw Error(valid.error);
}
for (var i = 0; i < ext.length; ++i) {
switch (ext[i].type) {
case 'lang':
langExtensions.push(ext[i]);
break;
case 'output':
outputModifiers.push(ext[i]);
break;
default:// should never reach here
throw Error('Extension loader error: Type unrecognized!!!');
}
}
}
/**
* Listen to an event
* @param {string} name
* @param {function} callback
*/
function listen (name, callback) {
if (!showdown.helper.isString(name)) {
throw Error('Invalid argument in converter.listen() method: name must be a string, but ' + typeof name + ' given');
}
if (typeof callback !== 'function') {
throw Error('Invalid argument in converter.listen() method: callback must be a function, but ' + typeof callback + ' given');
}
if (!listeners.hasOwnProperty(name)) {
listeners[name] = [];
}
listeners[name].push(callback);
}
function rTrimInputText (text) {
var rsp = text.match(/^\s*/)[0].length,
rgx = new RegExp('^\\s{0,' + rsp + '}', 'gm');
return text.replace(rgx, '');
}
/**
* Dispatch an event
* @private
* @param {string} evtName Event name
* @param {string} text Text
* @param {{}} options Converter Options
* @param {{}} globals
* @returns {string}
*/
this._dispatch = function dispatch (evtName, text, options, globals) {
if (listeners.hasOwnProperty(evtName)) {
for (var ei = 0; ei < listeners[evtName].length; ++ei) {
var nText = listeners[evtName][ei](evtName, text, this, options, globals);
if (nText && typeof nText !== 'undefined') {
text = nText;
}
}
}
return text;
};
/**
* Listen to an event
* @param {string} name
* @param {function} callback
* @returns {showdown.Converter}
*/
this.listen = function (name, callback) {
listen(name, callback);
return this;
};
/**
* Converts a markdown string into HTML string
* @param {string} text
* @returns {*}
*/
this.makeHtml = function (text) {
//check if text is not falsy
if (!text) {
return text;
}
var globals = {
gHtmlBlocks: [],
gHtmlMdBlocks: [],
gHtmlSpans: [],
gUrls: {},
gTitles: {},
gDimensions: {},
gListLevel: 0,
hashLinkCounts: {},
langExtensions: langExtensions,
outputModifiers: outputModifiers,
converter: this,
ghCodeBlocks: [],
metadata: {
parsed: {},
raw: '',
format: ''
}
};
// This lets us use ¨ trema 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');
// 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
// Stardardize line spaces (nbsp causes trouble in older browsers and some regex flavors)
text = text.replace(/\u00A0/g, ' ');
if (options.smartIndentationFix) {
text = rTrimInputText(text);
}
// Make sure text begins and ends with a couple of newlines:
text = '\n\n' + text + '\n\n';
// detab
text = showdown.subParser('makehtml.detab')(text, options, globals);
/**
* Strip any lines consisting only of spaces and tabs.
* This makes subsequent regexs 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 languageExtensions
showdown.helper.forEach(langExtensions, function (ext) {
text = showdown.subParser('makehtml.runExtension')(ext, text, options, globals);
});
// run the sub parsers
text = showdown.subParser('makehtml.metadata')(text, options, globals);
text = showdown.subParser('makehtml.hashPreCodeTags')(text, options, globals);
text = showdown.subParser('makehtml.githubCodeBlocks')(text, options, globals);
text = showdown.subParser('makehtml.hashHTMLBlocks')(text, options, globals);
text = showdown.subParser('makehtml.hashCodeTags')(text, options, globals);
text = showdown.subParser('makehtml.stripLinkDefinitions')(text, options, globals);
text = showdown.subParser('makehtml.blockGamut')(text, options, globals);
text = showdown.subParser('makehtml.unhashHTMLSpans')(text, options, globals);
text = showdown.subParser('makehtml.unescapeSpecialChars')(text, options, globals);
// attacklab: Restore dollar signs
text = text.replace(/¨D/g, '$$');
// attacklab: Restore tremas
text = text.replace(/¨T/g, '¨');
// render a complete html document instead of a partial if the option is enabled
text = showdown.subParser('makehtml.completeHTMLDocument')(text, options, globals);
// Run output modifiers
showdown.helper.forEach(outputModifiers, function (ext) {
text = showdown.subParser('makehtml.runExtension')(ext, text, options, globals);
});
// update metadata
metadata = globals.metadata;
return text;
};
/**
* Converts an HTML string into a markdown string
* @param src
* @returns {string}
*/
this.makeMarkdown = function (src) {
// replace \r\n with \n
src = src.replace(/\r\n/g, '\n');
src = src.replace(/\r/g, '\n'); // old macs
// due to an edge case, we need to find this: > <
// to prevent removing of non silent white spaces
// ex: this is sparta
src = src.replace(/>[ \t]+¨NBSP;<');
var doc = showdown.helper.document.createElement('div');
doc.innerHTML = src;
var preList = substitutePreCodeTags(doc);
// remove all newlines and collapse spaces
clean(doc);
// some stuff, like accidental reference links must now be escaped
// TODO
// doc.innerHTML = doc.innerHTML.replace(/\[[\S\t ]]/);
var nodes = doc.childNodes,
mdDoc = '';
for (var i = 0; i < nodes.length; i++) {
mdDoc += parseNode(nodes[i]);
}
function parseNode (node, spansOnly) {
spansOnly = spansOnly || false;
var txt = '';
// edge case of text without wrapper paragraph
if (node.nodeType === 3) {
return parseTxt(node);
}
// HTML comment
if (node.nodeType === 8) {
return '\n\n';
}
// process only node elements
if (node.nodeType !== 1) {
return '';
}
var tagName = node.tagName.toLowerCase();
switch (tagName) {
//
// BLOCKS
//
case 'h1':
if (!spansOnly) { txt = parseHeader(node, 1) + '\n\n'; }
break;
case 'h2':
if (!spansOnly) { txt = parseHeader(node, 2) + '\n\n'; }
break;
case 'h3':
if (!spansOnly) { txt = parseHeader(node, 3) + '\n\n'; }
break;
case 'h4':
if (!spansOnly) { txt = parseHeader(node, 4) + '\n\n'; }
break;
case 'h5':
if (!spansOnly) { txt = parseHeader(node, 5) + '\n\n'; }
break;
case 'h6':
if (!spansOnly) { txt = parseHeader(node, 6) + '\n\n'; }
break;
case 'p':
if (!spansOnly) { txt = parseParagraph(node) + '\n\n'; }
break;
case 'blockquote':
if (!spansOnly) { txt = parseBlockquote(node) + '\n\n'; }
break;
case 'hr':
if (!spansOnly) { txt = parseHr(node) + '\n\n'; }
break;
case 'ol':
if (!spansOnly) { txt = parseList(node, 'ol') + '\n\n'; }
break;
case 'ul':
if (!spansOnly) { txt = parseList(node, 'ul') + '\n\n'; }
break;
case 'precode':
if (!spansOnly) { txt = parsePreCode(node) + '\n\n'; }
break;
case 'pre':
if (!spansOnly) { txt = parsePre(node) + '\n\n'; }
break;
case 'table':
if (!spansOnly) { txt = parseTable(node) + '\n\n'; }
break;
//
// SPANS
//
case 'code':
txt = parseCodeSpan(node);
break;
case 'em':
case 'i':
txt = parseEmphasis(node);
break;
case 'strong':
case 'b':
txt = parseStrong(node);
break;
case 'del':
txt = parseDel(node);
break;
case 'a':
txt = parseLinks(node);
break;
case 'img':
txt = parseImage(node);
break;
default:
txt = node.outerHTML + '\n\n';
}
// common normalization
return txt;
}
function parseTxt (node) {
var txt = node.nodeValue;
// multiple spaces are collapsed
txt = txt.replace(/ +/g, ' ');
// replace the custom ¨NBSP; with a space
txt = txt.replace(/¨NBSP;/g, ' ');
// ", <, > and & should replace escaped html entities
txt = showdown.helper.unescapeHTMLEntities(txt);
// escape markdown magic characters
// emphasis, strong and strikethrough - can appear everywhere
// we also escape pipe (|) because of tables
// and escape ` because of code blocks and spans
txt = txt.replace(/([*_~|`])/g, '\\$1');
// escape > because of blockquotes
txt = txt.replace(/^(\s*)>/g, '\\$1>');
// hash character, only troublesome at the beginning of a line because of headers
txt = txt.replace(/^#/gm, '\\#');
// horizontal rules
txt = txt.replace(/^(\s*)([-=]{3,})(\s*)$/, '$1\\$2$3');
// dot, because of ordered lists, only troublesome at the beginning of a line when preceded by an integer
txt = txt.replace(/^( {0,3}\d+)\./gm, '$1\\.');
// +, * and -, at the beginning of a line becomes a list, so we need to escape them also (asterisk was already escaped)
txt = txt.replace(/^( {0,3})([+-])/gm, '$1\\$2');
// images and links, ] followed by ( is problematic, so we escape it
txt = txt.replace(/]([\s]*)\(/g, '\\]$1\\(');
// reference URIs must also be escaped
txt = txt.replace(/^ {0,3}\[([\S \t]*?)]:/gm, '\\[$1]:');
return txt;
}
function parseList (node, type) {
var txt = '';
if (!node.hasChildNodes()) {
return '';
}
var listItems = node.childNodes,
listItemsLenght = listItems.length,
listNum = node.getAttribute('start') || 1;
for (var i = 0; i < listItemsLenght; ++i) {
if (typeof listItems[i].tagName === 'undefined' || listItems[i].tagName.toLowerCase() !== 'li') {
continue;
}
// define the bullet to use in list
var bullet = '';
if (type === 'ol') {
bullet = listNum.toString() + '. ';
} else {
bullet = '- ';
}
// parse list item
txt += bullet + parseListItem(listItems[i]);
++listNum;
}
return txt.trim();
}
function parseListItem (node) {
var listItemTxt = '';
var children = node.childNodes,
childrenLenght = children.length;
for (var i = 0; i < childrenLenght; ++i) {
listItemTxt += parseNode(children[i]);
}
// if it's only one liner, we need to add a newline at the end
if (!/\n$/.test(listItemTxt)) {
listItemTxt += '\n';
} else {
// it's multiparagraph, so we need to indent
listItemTxt = listItemTxt
.split('\n')
.join('\n ')
.replace(/^ {4}$/gm, '')
.replace(/\n\n+/g, '\n\n');
}
return listItemTxt;
}
function parseHr () {
return '---';
}
function parseBlockquote (node) {
var txt = '';
if (node.hasChildNodes()) {
var children = node.childNodes,
childrenLength = children.length;
for (var i = 0; i < childrenLength; ++i) {
var innerTxt = parseNode(children[i]);
if (innerTxt === '') {
continue;
}
txt += innerTxt;
}
}
// cleanup
txt = txt.trim();
txt = '> ' + txt.split('\n').join('\n> ');
return txt;
}
function parseCodeSpan (node) {
return '`' + node.innerHTML + '`';
}
function parseStrong (node) {
var txt = '';
if (node.hasChildNodes()) {
txt += '**';
var children = node.childNodes,
childrenLength = children.length;
for (var i = 0; i < childrenLength; ++i) {
txt += parseNode(children[i]);
}
txt += '**';
}
return txt;
}
function parseEmphasis (node) {
var txt = '';
if (node.hasChildNodes()) {
txt += '*';
var children = node.childNodes,
childrenLength = children.length;
for (var i = 0; i < childrenLength; ++i) {
txt += parseNode(children[i]);
}
txt += '*';
}
return txt;
}
function parseDel (node) {
var txt = '';
if (node.hasChildNodes()) {
txt += '~~';
var children = node.childNodes,
childrenLength = children.length;
for (var i = 0; i < childrenLength; ++i) {
txt += parseNode(children[i]);
}
txt += '~~';
}
return txt;
}
function parseLinks (node) {
var txt = '';
if (node.hasChildNodes() && node.hasAttribute('href')) {
var children = node.childNodes,
childrenLength = children.length;
txt = '[';
for (var i = 0; i < childrenLength; ++i) {
txt += parseNode(children[i]);
}
txt += '](';
txt += '<' + node.getAttribute('href') + '>';
if (node.hasAttribute('title')) {
txt += ' "' + node.getAttribute('title') + '"';
}
txt += ')';
}
return txt;
}
function parseImage (node) {
var txt = '';
if (node.hasAttribute('src')) {
txt += ' + '>';
if (node.hasAttribute('width') && node.hasAttribute('height')) {
txt += ' =' + node.getAttribute('width') + 'x' + node.getAttribute('height');
}
if (node.hasAttribute('title')) {
txt += ' "' + node.getAttribute('title') + '"';
}
txt += ')';
}
return txt;
}
function parseHeader (node, headerLevel) {
var headerMark = new Array(headerLevel + 1).join('#'),
txt = '';
if (node.hasChildNodes()) {
txt = headerMark + ' ';
var children = node.childNodes,
childrenLength = children.length;
for (var i = 0; i < childrenLength; ++i) {
txt += parseNode(children[i]);
}
}
return txt;
}
function parseParagraph (node) {
var txt = '';
if (node.hasChildNodes()) {
var children = node.childNodes,
childrenLength = children.length;
for (var i = 0; i < childrenLength; ++i) {
txt += parseNode(children[i]);
}
}
// some text normalization
txt = txt.trim();
return txt;
}
function parsePreCode (node) {
var lang = node.getAttribute('language'),
num = node.getAttribute('precodenum');
return '```' + lang + '\n' + preList[num] + '\n```';
}
function parsePre (node) {
var num = node.getAttribute('prenum');
return '' + preList[num] + '
';
}
function parseTable (node) {
var txt = '',
tableArray = [[], []],
headings = node.querySelectorAll('thead>tr>th'),
rows = node.querySelectorAll('tbody>tr'),
i, ii;
for (i = 0; i < headings.length; ++i) {
var headContent = parseTableCell(headings[i]),
allign = '---';
if (headings[i].hasAttribute('style')) {
var style = headings[i].getAttribute('style').toLowerCase().replace(/\s/g, '');
switch (style) {
case 'text-align:left;':
allign = ':---';
break;
case 'text-align:right;':
allign = '---:';
break;
case 'text-align:center;':
allign = ':---:';
break;
}
}
tableArray[0][i] = headContent.trim();
tableArray[1][i] = allign;
}
for (i = 0; i < rows.length; ++i) {
var r = tableArray.push([]) - 1,
cols = rows[i].getElementsByTagName('td');
for (ii = 0; ii < headings.length; ++ii) {
var cellContent = ' ';
if (typeof cols[ii] !== 'undefined') {
cellContent = parseTableCell(cols[ii]);
}
tableArray[r].push(cellContent);
}
}
var cellSpacesCount = 3;
for (i = 0; i < tableArray.length; ++i) {
for (ii = 0; ii < tableArray[i].length; ++ii) {
var strLen = tableArray[i][ii].length;
if (strLen > cellSpacesCount) {
cellSpacesCount = strLen;
}
}
}
for (i = 0; i < tableArray.length; ++i) {
for (ii = 0; ii < tableArray[i].length; ++ii) {
if (i === 1) {
if (tableArray[i][ii].slice(-1) === ':') {
tableArray[i][ii] = showdown.helper.padEnd(tableArray[i][ii].slice(-1), cellSpacesCount - 1, '-') + ':';
} else {
tableArray[i][ii] = showdown.helper.padEnd(tableArray[i][ii], cellSpacesCount, '-');
}
} else {
tableArray[i][ii] = showdown.helper.padEnd(tableArray[i][ii], cellSpacesCount);
}
}
txt += '| ' + tableArray[i].join(' | ') + ' |\n';
}
return txt.trim();
}
function parseTableCell (node) {
var txt = '';
if (!node.hasChildNodes()) {
return '';
}
var children = node.childNodes,
childrenLength = children.length;
for (var i = 0; i < childrenLength; ++i) {
txt += parseNode(children[i], true);
}
return txt.trim();
}
function clean (node) {
for (var n = 0; n < node.childNodes.length; ++n) {
var child = node.childNodes[n];
if (child.nodeType === 3) {
if (!/\S/.test(child.nodeValue)) {
node.removeChild(child);
--n;
} else {
child.nodeValue = child.nodeValue.split('\n').join(' ');
child.nodeValue = child.nodeValue.replace(/(\s)+/g, '$1');
}
} else if (child.nodeType === 1) {
clean(child);
}
}
}
// find all pre tags and replace contents with placeholder
// we need this so that we can remove all indentation from html
// to ease up parsing
function substitutePreCodeTags (doc) {
var pres = doc.querySelectorAll('pre'),
presPH = [];
for (var i = 0; i < pres.length; ++i) {
if (pres[i].childElementCount === 1 && pres[i].firstChild.tagName.toLowerCase() === 'code') {
var content = pres[i].firstChild.innerHTML.trim(),
language = pres[i].firstChild.getAttribute('data-language') || '';
// if data-language attribute is not defined, then we look for class language-*
if (language === '') {
var classes = pres[i].firstChild.className.split(' ');
for (var c = 0; c < classes.length; ++c) {
var matches = classes[c].match(/^language-(.+)$/);
if (matches !== null) {
language = matches[1];
break;
}
}
}
// unescape html entities in content
content = showdown.helper.unescapeHTMLEntities(content);
presPH.push(content);
pres[i].outerHTML = '