/
githubCodeBlocks.js
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/
githubCodeBlocks.js
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/**
* 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';
// early exit if option is not enabled
if (!options.ghCodeBlocks) {
return text;
}
text = globals.converter._dispatch('githubCodeBlocks.before', text, options, globals);
text += '¨0';
text = text.replace(/(?:^|\n)(?: {0,3})(```+|~~~+)(?: *)([^\s`~]*)\n([\s\S]*?)\n(?: {0,3})\1/g, function (wholeMatch, delim, language, codeblock) {
var end = (options.omitExtraWLInCodeBlocks) ? '' : '\n';
// First parse the github code block
codeblock = showdown.subParser('encodeCode')(codeblock, options, globals);
codeblock = showdown.subParser('detab')(codeblock, options, globals);
codeblock = codeblock.replace(/^\n+/g, ''); // trim leading newlines
codeblock = codeblock.replace(/\n+$/g, ''); // trim trailing whitespace
codeblock = '<pre><code' + (language ? ' class="' + language + ' language-' + language + '"' : '') + '>' + codeblock + end + '</code></pre>';
codeblock = showdown.subParser('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('githubCodeBlocks.after', text, options, globals);
});