mirror of
https://github.com/zulip/zulip.git
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4192276aa3
This fixes a set of XSS issues with Zulip's frontend markdown processor, which is used in a limited set of contexts, such as local echo of messages and the drafts feature. The implementation of several syntax elements, including the <em> syntax, user and stream mentions, and some others failed to properly escape the content inside the syntax. Fix this, and add tests for each corrected code path. Thanks to w2w for reporting this issue.
1483 lines
33 KiB
JavaScript
1483 lines
33 KiB
JavaScript
/**
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* marked - a markdown parser
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* Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)
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* https://github.com/chjj/marked
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*/
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;(function() {
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/**
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* Block-Level Grammar
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*/
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var block = {
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newline: /^\n+/,
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code: /^( {4}[^\n]+\n*)+/,
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fences: noop,
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hr: /^( *[-*_]){3,} *(?:\n+|$)/,
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nptable: noop,
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blockquote: /^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,
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list: /^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
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html: /^ *(?:comment *(?:\n|\s*$)|closed *(?:\n{2,}|\s*$)|closing *(?:\n{2,}|\s*$))/,
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def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,
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table: noop,
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paragraph: /^((?:[^\n]+\n?(?!hr|blockquote|tag|def))+)\n*/,
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text: /^[^\n]+/
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};
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// Zulip modification: Remove numbers from this pattern.
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block.bullet = /(?:[*+-])/;
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block.item = /^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/;
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block.item = replace(block.item, 'gm')
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(/bull/g, block.bullet)
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();
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block.list = replace(block.list)
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(/bull/g, block.bullet)
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('hr', '\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))')
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('def', '\\n+(?=' + block.def.source + ')')
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();
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block.blockquote = replace(block.blockquote)
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('def', block.def)
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();
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block._tag = '(?!(?:'
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+ 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code'
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+ '|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo'
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+ '|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b';
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block.html = replace(block.html)
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('comment', /<!--[\s\S]*?-->/)
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('closed', /<(tag)[\s\S]+?<\/\1>/)
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('closing', /<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)
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(/tag/g, block._tag)
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();
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block.paragraph = replace(block.paragraph)
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('hr', block.hr)
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('blockquote', block.blockquote)
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('tag', '<' + block._tag)
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('def', block.def)
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();
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/**
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* Normal Block Grammar
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*/
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block.normal = merge({}, block);
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/**
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* GFM Block Grammar
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*/
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block.gfm = merge({}, block.normal, {
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fences: /^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n([\s\S]*?)\s*\1 *(?:\n+|$)/,
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paragraph: /^/,
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});
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block.gfm.paragraph = replace(block.paragraph)
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('(?!', '(?!'
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+ block.gfm.fences.source.replace('\\1', '\\2') + '|'
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+ block.list.source.replace('\\1', '\\3') + '|')
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();
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/**
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* GFM + Tables Block Grammar
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*/
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block.tables = merge({}, block.gfm, {
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nptable: /^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,
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table: /^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/
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});
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/**
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* Block Lexer
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*/
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function Lexer(options) {
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this.tokens = [];
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this.tokens.links = {};
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this.options = options || marked.defaults;
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this.rules = block.normal;
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if (this.options.gfm) {
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if (this.options.tables) {
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this.rules = block.tables;
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} else {
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this.rules = block.gfm;
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}
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}
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}
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/**
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* Expose Block Rules
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*/
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Lexer.rules = block;
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/**
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* Static Lex Method
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*/
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Lexer.lex = function(src, options) {
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var lexer = new Lexer(options);
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return lexer.lex(src);
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};
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/**
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* Preprocessing
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*/
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Lexer.prototype.lex = function(src) {
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src = src
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.replace(/\r\n|\r/g, '\n')
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.replace(/\t/g, ' ')
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.replace(/\u00a0/g, ' ')
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.replace(/\u2424/g, '\n');
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return this.token(src, true);
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};
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var htmlStashCounter = 0;
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var htmlStashTemplate = "klzzwxhzsd:";
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var htmlStashRegex = /\bklzzwxhzsd:[0-9]+\b/;
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var htmlStash = [];
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function stashHtml(html, safe) {
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var key = htmlStashTemplate + htmlStashCounter;
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htmlStashCounter++;
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htmlStash.push([key, html, safe]);
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return key;
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}
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/**
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* Lexing
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*/
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Lexer.prototype.token = function(src, top, bq) {
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var src = src.replace(/^ +$/gm, '')
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, next
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, loose
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, cap
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, bull
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, b
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, item
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, space
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, i
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, l;
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while (src) {
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// newline
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if (cap = this.rules.newline.exec(src)) {
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src = src.substring(cap[0].length);
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if (cap[0].length > 1) {
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this.tokens.push({
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type: 'space'
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});
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}
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}
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// code
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if (cap = this.rules.code.exec(src)) {
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src = src.substring(cap[0].length);
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cap = cap[0].replace(/^ {4}/gm, '');
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this.tokens.push({
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type: 'code',
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text: !this.options.pedantic
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? cap.replace(/\n+$/, '')
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: cap
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});
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continue;
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}
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// fences (gfm)
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if (cap = this.rules.fences.exec(src)) {
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src = src.substring(cap[0].length);
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this.tokens.push({
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type: 'code',
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lang: cap[2],
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text: cap[3] || ''
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});
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continue;
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}
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// table no leading pipe (gfm)
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if (top && (cap = this.rules.nptable.exec(src))) {
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src = src.substring(cap[0].length);
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item = {
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type: 'table',
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header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
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align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
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cells: cap[3].replace(/\n$/, '').split('\n')
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};
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for (i = 0; i < item.align.length; i++) {
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if (/^ *-+: *$/.test(item.align[i])) {
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item.align[i] = 'right';
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} else if (/^ *:-+: *$/.test(item.align[i])) {
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item.align[i] = 'center';
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} else if (/^ *:-+ *$/.test(item.align[i])) {
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item.align[i] = 'left';
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} else {
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item.align[i] = null;
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}
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}
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for (i = 0; i < item.cells.length; i++) {
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item.cells[i] = item.cells[i].split(/ *\| */);
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}
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this.tokens.push(item);
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continue;
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}
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// hr
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if (cap = this.rules.hr.exec(src)) {
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src = src.substring(cap[0].length);
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this.tokens.push({
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type: 'hr'
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});
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continue;
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}
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// blockquote
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if (cap = this.rules.blockquote.exec(src)) {
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src = src.substring(cap[0].length);
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this.tokens.push({
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type: 'blockquote_start'
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});
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cap = cap[0].replace(/^ *> ?/gm, '');
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// Pass `top` to keep the current
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// "toplevel" state. This is exactly
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// how markdown.pl works.
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this.token(cap, top, true);
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this.tokens.push({
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type: 'blockquote_end'
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});
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continue;
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}
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// list
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if (cap = this.rules.list.exec(src)) {
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src = src.substring(cap[0].length);
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bull = cap[2];
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this.tokens.push({
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type: 'list_start',
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ordered: bull.length > 1
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});
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// Get each top-level item.
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cap = cap[0].match(this.rules.item);
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next = false;
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l = cap.length;
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i = 0;
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for (; i < l; i++) {
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item = cap[i];
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// Remove the list item's bullet
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// so it is seen as the next token.
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space = item.length;
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item = item.replace(/^ *([*+-]|\d+\.) +/, '');
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// Outdent whatever the
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// list item contains. Hacky.
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if (~item.indexOf('\n ')) {
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space -= item.length;
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item = !this.options.pedantic
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? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '')
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: item.replace(/^ {1,4}/gm, '');
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}
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// Determine whether the next list item belongs here.
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// Backpedal if it does not belong in this list.
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if (this.options.smartLists && i !== l - 1) {
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b = block.bullet.exec(cap[i + 1])[0];
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if (bull !== b && !(bull.length > 1 && b.length > 1)) {
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src = cap.slice(i + 1).join('\n') + src;
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i = l - 1;
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}
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}
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// Determine whether item is loose or not.
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// Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
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// for discount behavior.
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loose = next || /\n\n(?!\s*$)/.test(item);
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if (i !== l - 1) {
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next = item.charAt(item.length - 1) === '\n';
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if (!loose) loose = next;
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}
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this.tokens.push({
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type: loose
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? 'loose_item_start'
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: 'list_item_start'
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});
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// Recurse.
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this.token(item, false, bq);
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this.tokens.push({
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type: 'list_item_end'
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});
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}
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this.tokens.push({
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type: 'list_end'
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});
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continue;
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}
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// html
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if (cap = this.rules.html.exec(src)) {
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src = src.substring(cap[0].length);
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this.tokens.push({
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type: this.options.sanitize
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? 'paragraph'
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: 'html',
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pre: !this.options.sanitizer
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&& (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
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text: cap[0]
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});
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continue;
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}
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// def
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if ((!bq && top) && (cap = this.rules.def.exec(src))) {
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src = src.substring(cap[0].length);
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this.tokens.links[cap[1].toLowerCase()] = {
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href: cap[2],
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title: cap[3]
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};
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continue;
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}
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// table (gfm)
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if (top && (cap = this.rules.table.exec(src))) {
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src = src.substring(cap[0].length);
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item = {
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type: 'table',
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header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
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align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
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cells: cap[3].replace(/(?: *\| *)?\n$/, '').split('\n')
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};
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for (i = 0; i < item.align.length; i++) {
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if (/^ *-+: *$/.test(item.align[i])) {
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item.align[i] = 'right';
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} else if (/^ *:-+: *$/.test(item.align[i])) {
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item.align[i] = 'center';
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} else if (/^ *:-+ *$/.test(item.align[i])) {
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item.align[i] = 'left';
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} else {
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item.align[i] = null;
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}
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}
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for (i = 0; i < item.cells.length; i++) {
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item.cells[i] = item.cells[i]
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.replace(/^ *\| *| *\| *$/g, '')
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.split(/ *\| */);
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}
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this.tokens.push(item);
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continue;
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}
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// top-level paragraph
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if (top && (cap = this.rules.paragraph.exec(src))) {
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src = src.substring(cap[0].length);
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this.tokens.push({
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type: 'paragraph',
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text: cap[1].charAt(cap[1].length - 1) === '\n'
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? cap[1].slice(0, -1)
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: cap[1]
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});
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continue;
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}
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// text
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if (cap = this.rules.text.exec(src)) {
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// Top-level should never reach here.
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src = src.substring(cap[0].length);
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this.tokens.push({
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type: 'text',
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text: cap[0]
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});
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continue;
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}
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if (src) {
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throw new
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Error('Infinite loop on byte: ' + src.charCodeAt(0));
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}
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}
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return this.tokens;
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};
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/**
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* Inline-Level Grammar
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*/
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var inline = {
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escape: /^\\([\\`*{}\[\]()#+\-.!_>])/,
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autolink: /^<([^ >]+(@|:\/)[^ >]+)>/,
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url: noop,
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tag: /^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^'">])*?>/,
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link: /^!?\[(inside)\]\(href\)/,
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reflink: /^!?\[(inside)\]\s*\[([^\]]*)\]/,
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nolink: /^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,
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strong: /^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,
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em: /^\b_((?:[^_]|__)+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,
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code: /^(`+)\s*([\s\S]*?[^`])\s*\1(?!`)/,
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br: /^ {2,}\n(?!\s*$)/,
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del: noop,
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emoji: noop,
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unicodeemoji: noop,
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usermention: noop,
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stream: noop,
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avatar: noop,
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tex: noop,
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gravatar: noop,
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realm_filters: [],
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text: /^[\s\S]+?(?=[\\<!\[_*`$]| {2,}\n|$)/
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};
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inline._inside = /(?:\[[^\]]*\]|[^\[\]]|\](?=[^\[]*\]))*/;
|
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inline._href = /\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/;
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inline.link = replace(inline.link)
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('inside', inline._inside)
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('href', inline._href)
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();
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|
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inline.reflink = replace(inline.reflink)
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('inside', inline._inside)
|
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();
|
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|
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/**
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* Normal Inline Grammar
|
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*/
|
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|
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inline.normal = merge({}, inline);
|
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/**
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* Pedantic Inline Grammar
|
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*/
|
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inline.pedantic = merge({}, inline.normal, {
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strong: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
|
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em: /^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/
|
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});
|
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|
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/**
|
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* GFM Inline Grammar
|
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*/
|
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|
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inline.gfm = merge({}, inline.normal, {
|
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escape: replace(inline.escape)('])', '~|])')(),
|
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url: /^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,
|
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del: /^~~(?=\S)([\s\S]*?\S)~~/,
|
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text: replace(inline.text)
|
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(']|', '~]|')
|
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('|', '|https?://|')
|
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()
|
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});
|
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|
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/**
|
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* GFM + Line Breaks Inline Grammar
|
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*/
|
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|
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inline.breaks = merge({}, inline.gfm, {
|
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br: replace(inline.br)('{2,}', '*')(),
|
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text: replace(inline.gfm.text)('{2,}', '*')()
|
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});
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inline.zulip = merge({}, inline.breaks, {
|
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emoji: /^:([A-Za-z0-9_\-\+]+?):/,
|
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unicodeemoji: RegExp('^(\ud83c[\udd00-\udfff]|\ud83d[\udc00-\ude4f]|' +
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'\ud83d[\ude80-\udeff]|\ud83e[\udd00-\uddff]|' +
|
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'[\u2000-\u206F]|[\u2300-\u27BF]|[\u2B00-\u2BFF]|' +
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'[\u3000-\u303F]|[\u3200-\u32FF])'),
|
|
usermention: /^(@(?:\*\*([^\*]+)\*\*|(\w+)))/, // Match multi-word string between @** ** or match any one-word
|
|
stream: /^#\*\*([^\*]+)\*\*/,
|
|
avatar: /^!avatar\(([^)]+)\)/,
|
|
gravatar: /^!gravatar\(([^)]+)\)/,
|
|
tex: /^(\$\$([^ _$](\\\$|[^$])*)(?! )\$\$)\B/,
|
|
realm_filters: [],
|
|
text: replace(inline.breaks.text)
|
|
('|', '|(\ud83c[\udd00-\udfff]|\ud83d[\udc00-\ude4f]|' +
|
|
'\ud83d[\ude80-\udeff]|\ud83e[\udd00-\uddff]|' +
|
|
'[\u2000-\u206F]|[\u2300-\u27BF]|[\u2B00-\u2BFF]|' +
|
|
'[\u3000-\u303F]|[\u3200-\u32FF])|')
|
|
(']|', '#@:]|')
|
|
()
|
|
});
|
|
|
|
/**
|
|
* Inline Lexer & Compiler
|
|
*/
|
|
|
|
function InlineLexer(links, options) {
|
|
this.options = options || marked.defaults;
|
|
this.links = links;
|
|
this.rules = inline.normal;
|
|
this.renderer = this.options.renderer || new Renderer;
|
|
this.renderer.options = this.options;
|
|
|
|
if (!this.links) {
|
|
throw new
|
|
Error('Tokens array requires a `links` property.');
|
|
}
|
|
|
|
if (this.options.zulip) {
|
|
this.rules = inline.zulip;
|
|
} else {
|
|
if (this.options.gfm) {
|
|
if (this.options.breaks) {
|
|
this.rules = inline.breaks;
|
|
} else {
|
|
this.rules = inline.gfm;
|
|
}
|
|
} else if (this.options.pedantic) {
|
|
this.rules = inline.pedantic;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Expose Inline Rules
|
|
*/
|
|
|
|
InlineLexer.rules = inline;
|
|
|
|
/**
|
|
* Static Lexing/Compiling Method
|
|
*/
|
|
|
|
InlineLexer.output = function(src, links, options) {
|
|
var inline = new InlineLexer(links, options);
|
|
return inline.output(src);
|
|
};
|
|
|
|
/**
|
|
* Lexing/Compiling
|
|
*/
|
|
|
|
InlineLexer.prototype.inlineReplacement = function(regex, src, replace_func) {
|
|
var cap, out = "";
|
|
regex.lastIndex = 0;
|
|
if (cap = regex.exec(src)) {
|
|
// Split before-match into its own segment and handle it separately
|
|
var match_idx = regex.lastIndex;
|
|
var before = src.substring(0, match_idx - cap[0].length);
|
|
before = this.output(before);
|
|
out += before;
|
|
|
|
// Consume all of the matched text
|
|
src = src.substring(match_idx);
|
|
|
|
out += replace_func(regex, cap.slice(1), cap[0]);
|
|
}
|
|
|
|
return [src, out];
|
|
};
|
|
|
|
InlineLexer.prototype.output = function(src) {
|
|
var out = ''
|
|
, link
|
|
, text
|
|
, href
|
|
, cap;
|
|
|
|
while (src) {
|
|
// escape
|
|
if (cap = this.rules.escape.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += cap[1];
|
|
continue;
|
|
}
|
|
|
|
// realm_filters (zulip)
|
|
var self = this;
|
|
this.rules.realm_filters.forEach(function (realm_filter) {
|
|
var ret = self.inlineReplacement(realm_filter, src, function(regex, groups, match) {
|
|
// Insert the created URL
|
|
href = self.realm_filter(regex, groups, match);
|
|
if (href !== undefined) {
|
|
href = escape(href);
|
|
return self.renderer.link(href, href, match);
|
|
} else {
|
|
return match;
|
|
}
|
|
});
|
|
|
|
src = ret[0];
|
|
out += ret[1];
|
|
});
|
|
|
|
// autolink
|
|
if (cap = this.rules.autolink.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
if (cap[2] === '@') {
|
|
text = cap[1].charAt(6) === ':'
|
|
? this.mangle(cap[1].substring(7))
|
|
: this.mangle(cap[1]);
|
|
href = this.mangle('mailto:') + text;
|
|
} else {
|
|
text = escape(cap[1]);
|
|
href = text;
|
|
}
|
|
out += this.renderer.link(href, null, text);
|
|
continue;
|
|
}
|
|
|
|
// url (gfm)
|
|
if (!this.inLink && (cap = this.rules.url.exec(src))) {
|
|
src = src.substring(cap[0].length);
|
|
text = escape(cap[1]);
|
|
href = text;
|
|
out += this.renderer.link(href, null, text);
|
|
continue;
|
|
}
|
|
|
|
// tag
|
|
if (cap = this.rules.tag.exec(src)) {
|
|
if (!this.inLink && /^<a /i.test(cap[0])) {
|
|
this.inLink = true;
|
|
} else if (this.inLink && /^<\/a>/i.test(cap[0])) {
|
|
this.inLink = false;
|
|
}
|
|
src = src.substring(cap[0].length);
|
|
out += this.options.sanitize
|
|
? this.options.sanitizer
|
|
? this.options.sanitizer(cap[0])
|
|
: escape(cap[0])
|
|
: cap[0]
|
|
continue;
|
|
}
|
|
|
|
// link
|
|
if (cap = this.rules.link.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
this.inLink = true;
|
|
out += this.outputLink(cap, {
|
|
href: cap[2],
|
|
title: cap[3]
|
|
});
|
|
this.inLink = false;
|
|
continue;
|
|
}
|
|
|
|
// reflink, nolink
|
|
if ((cap = this.rules.reflink.exec(src))
|
|
|| (cap = this.rules.nolink.exec(src))) {
|
|
src = src.substring(cap[0].length);
|
|
link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
|
|
link = this.links[link.toLowerCase()];
|
|
if (!link || !link.href) {
|
|
out += cap[0].charAt(0);
|
|
src = cap[0].substring(1) + src;
|
|
continue;
|
|
}
|
|
this.inLink = true;
|
|
out += this.outputLink(cap, link);
|
|
this.inLink = false;
|
|
continue;
|
|
}
|
|
|
|
// usermention (zulip)
|
|
if (cap = this.rules.usermention.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.usermention(cap[2] || cap[3], cap[1]);
|
|
continue;
|
|
}
|
|
|
|
// stream (zulip)
|
|
if (cap = this.rules.stream.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.stream(cap[1], cap[0]);
|
|
continue;
|
|
}
|
|
|
|
// strong
|
|
if (cap = this.rules.strong.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.renderer.strong(this.output(cap[2] || cap[1]));
|
|
continue;
|
|
}
|
|
|
|
// em
|
|
if (cap = this.rules.em.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.renderer.em(this.output(cap[1] + cap[2]));
|
|
continue;
|
|
}
|
|
|
|
// code
|
|
if (cap = this.rules.code.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.renderer.codespan(escape(cap[2], true));
|
|
continue;
|
|
}
|
|
|
|
// br
|
|
if (cap = this.rules.br.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.renderer.br();
|
|
continue;
|
|
}
|
|
|
|
// del (gfm)
|
|
if (cap = this.rules.del.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.renderer.del(this.output(cap[1]));
|
|
continue;
|
|
}
|
|
|
|
// emoji (gfm)
|
|
if (cap = this.rules.emoji.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.emoji(cap[1]);
|
|
continue;
|
|
}
|
|
|
|
// unicode emoji
|
|
if (cap = this.rules.unicodeemoji.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.unicodeEmoji(cap[1]);
|
|
continue;
|
|
}
|
|
|
|
// user avatar
|
|
if (cap = this.rules.avatar.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.userAvatar(cap[1]);
|
|
continue;
|
|
}
|
|
|
|
// user gravatar
|
|
if (cap = this.rules.gravatar.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.userGravatar(cap[1]);
|
|
continue;
|
|
}
|
|
|
|
// tex
|
|
if (cap = this.rules.tex.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.tex(cap[2], cap[0]);
|
|
continue;
|
|
}
|
|
|
|
// text
|
|
if (cap = this.rules.text.exec(src)) {
|
|
src = src.substring(cap[0].length);
|
|
out += this.renderer.text(escape(this.smartypants(cap[0])));
|
|
continue;
|
|
}
|
|
|
|
if (src) {
|
|
throw new
|
|
Error('Infinite loop on byte: ' + src.charCodeAt(0));
|
|
}
|
|
}
|
|
|
|
return out;
|
|
};
|
|
|
|
/**
|
|
* Compile Link
|
|
*/
|
|
|
|
InlineLexer.prototype.outputLink = function(cap, link) {
|
|
var href = escape(link.href)
|
|
, title = link.title ? escape(link.title) : null;
|
|
|
|
return cap[0].charAt(0) !== '!'
|
|
? this.renderer.link(href, title, this.output(cap[1]))
|
|
: this.renderer.image(href, title, escape(cap[1]));
|
|
};
|
|
InlineLexer.prototype.emoji = function (name) {
|
|
name = escape(name)
|
|
if (typeof this.options.emojiHandler !== 'function')
|
|
return ':' + name + ':';
|
|
|
|
return this.options.emojiHandler(name);
|
|
};
|
|
|
|
InlineLexer.prototype.unicodeEmoji = function (name) {
|
|
name = escape(name)
|
|
if (typeof this.options.unicodeEmojiHandler !== 'function')
|
|
return name;
|
|
return this.options.unicodeEmojiHandler(name);
|
|
};
|
|
|
|
InlineLexer.prototype.tex = function (tex, fullmatch) {
|
|
if (typeof this.options.texHandler !== 'function')
|
|
return fullmatch;
|
|
return this.options.texHandler(tex, fullmatch);
|
|
};
|
|
|
|
InlineLexer.prototype.userAvatar = function (email) {
|
|
email = escape(email);
|
|
if (typeof this.options.avatarHandler !== 'function')
|
|
return '!avatar(' + email + ')';
|
|
return this.options.avatarHandler(email);
|
|
};
|
|
|
|
InlineLexer.prototype.userGravatar = function (email) {
|
|
email = escape(email);
|
|
if (typeof this.options.avatarHandler !== 'function')
|
|
return '!gravatar(' + email + ')';
|
|
return this.options.avatarHandler(email);
|
|
};
|
|
|
|
InlineLexer.prototype.realm_filter = function (filter, matches, orig) {
|
|
if (typeof this.options.realmFilterHandler !== 'function')
|
|
return;
|
|
|
|
return this.options.realmFilterHandler(filter, matches);
|
|
};
|
|
|
|
InlineLexer.prototype.usermention = function (username, orig) {
|
|
orig = escape(orig);
|
|
if (typeof this.options.userMentionHandler !== 'function')
|
|
{
|
|
return orig;
|
|
}
|
|
|
|
var handled = this.options.userMentionHandler(username);
|
|
if (handled !== undefined) {
|
|
return handled;
|
|
}
|
|
|
|
return orig;
|
|
};
|
|
|
|
InlineLexer.prototype.stream = function (streamName, orig) {
|
|
orig = escape(orig);
|
|
if (typeof this.options.streamHandler !== 'function')
|
|
return orig;
|
|
|
|
var handled = this.options.streamHandler(streamName);
|
|
if (handled !== undefined) {
|
|
return handled;
|
|
}
|
|
return orig;
|
|
};
|
|
|
|
/**
|
|
* Smartypants Transformations
|
|
*/
|
|
|
|
InlineLexer.prototype.smartypants = function(text) {
|
|
if (!this.options.smartypants) return text;
|
|
return text
|
|
// em-dashes
|
|
.replace(/---/g, '\u2014')
|
|
// en-dashes
|
|
.replace(/--/g, '\u2013')
|
|
// opening singles
|
|
.replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
|
|
// closing singles & apostrophes
|
|
.replace(/'/g, '\u2019')
|
|
// opening doubles
|
|
.replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
|
|
// closing doubles
|
|
.replace(/"/g, '\u201d')
|
|
// ellipses
|
|
.replace(/\.{3}/g, '\u2026');
|
|
};
|
|
|
|
/**
|
|
* Mangle Links
|
|
*/
|
|
|
|
InlineLexer.prototype.mangle = function(text) {
|
|
if (!this.options.mangle) return text;
|
|
var out = ''
|
|
, l = text.length
|
|
, i = 0
|
|
, ch;
|
|
|
|
for (; i < l; i++) {
|
|
ch = text.charCodeAt(i);
|
|
if (Math.random() > 0.5) {
|
|
ch = 'x' + ch.toString(16);
|
|
}
|
|
out += '&#' + ch + ';';
|
|
}
|
|
|
|
return out;
|
|
};
|
|
|
|
/**
|
|
* Renderer
|
|
*/
|
|
|
|
function Renderer(options) {
|
|
this.options = options || {};
|
|
}
|
|
|
|
Renderer.prototype.code = function(code, lang, escaped) {
|
|
if (this.options.highlight) {
|
|
var out = this.options.highlight(code, lang);
|
|
if (out != null && out !== code) {
|
|
escaped = true;
|
|
code = out;
|
|
}
|
|
}
|
|
|
|
if (!lang) {
|
|
return '<pre><code>'
|
|
+ (escaped ? code : escape(code, true))
|
|
+ '\n</code></pre>';
|
|
}
|
|
|
|
return '<pre><code class="'
|
|
+ this.options.langPrefix
|
|
+ escape(lang, true)
|
|
+ '">'
|
|
+ (escaped ? code : escape(code, true))
|
|
+ '\n</code></pre>\n';
|
|
};
|
|
|
|
Renderer.prototype.blockquote = function(quote) {
|
|
return '<blockquote>\n' + quote + '</blockquote>\n';
|
|
};
|
|
|
|
Renderer.prototype.html = function(html) {
|
|
return html;
|
|
};
|
|
|
|
Renderer.prototype.hr = function() {
|
|
return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
|
|
};
|
|
|
|
Renderer.prototype.list = function(body, ordered) {
|
|
var type = ordered ? 'ol' : 'ul';
|
|
return '<' + type + '>\n' + body + '</' + type + '>\n';
|
|
};
|
|
|
|
Renderer.prototype.listitem = function(text) {
|
|
return '<li>' + text + '</li>\n';
|
|
};
|
|
|
|
Renderer.prototype.paragraph = function(text) {
|
|
return '<p>' + text + '</p>\n';
|
|
};
|
|
|
|
Renderer.prototype.table = function(header, body) {
|
|
return '<table>\n'
|
|
+ '<thead>\n'
|
|
+ header
|
|
+ '</thead>\n'
|
|
+ '<tbody>\n'
|
|
+ body
|
|
+ '</tbody>\n'
|
|
+ '</table>\n';
|
|
};
|
|
|
|
Renderer.prototype.tablerow = function(content) {
|
|
return '<tr>\n' + content + '</tr>\n';
|
|
};
|
|
|
|
Renderer.prototype.tablecell = function(content, flags) {
|
|
var type = flags.header ? 'th' : 'td';
|
|
var tag = flags.align
|
|
? '<' + type + ' style="text-align:' + flags.align + '">'
|
|
: '<' + type + '>';
|
|
return tag + content + '</' + type + '>\n';
|
|
};
|
|
|
|
// span level renderer
|
|
Renderer.prototype.strong = function(text) {
|
|
return '<strong>' + text + '</strong>';
|
|
};
|
|
|
|
Renderer.prototype.em = function(text) {
|
|
text = escape(text);
|
|
return '<em>' + text + '</em>';
|
|
};
|
|
|
|
Renderer.prototype.codespan = function(text) {
|
|
return '<code>' + text + '</code>';
|
|
};
|
|
|
|
Renderer.prototype.br = function() {
|
|
return this.options.xhtml ? '<br/>' : '<br>';
|
|
};
|
|
|
|
Renderer.prototype.del = function(text) {
|
|
return '<del>' + text + '</del>';
|
|
};
|
|
|
|
Renderer.prototype.link = function(href, title, text) {
|
|
if (this.options.sanitize) {
|
|
try {
|
|
var prot = decodeURIComponent(unescape(href))
|
|
.replace(/[^\w:]/g, '')
|
|
.toLowerCase();
|
|
} catch (e) {
|
|
return '';
|
|
}
|
|
if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0) {
|
|
return '';
|
|
}
|
|
}
|
|
var out = '<a href="' + href + '"';
|
|
if (title) {
|
|
out += ' title="' + title + '"';
|
|
}
|
|
out += '>' + text + '</a>';
|
|
return out;
|
|
};
|
|
|
|
Renderer.prototype.image = function(href, title, text) {
|
|
var out = '<img src="' + href + '" alt="' + text + '"';
|
|
if (title) {
|
|
out += ' title="' + title + '"';
|
|
}
|
|
out += this.options.xhtml ? '/>' : '>';
|
|
return out;
|
|
};
|
|
|
|
Renderer.prototype.text = function(text) {
|
|
return text;
|
|
};
|
|
|
|
/**
|
|
* Parsing & Compiling
|
|
*/
|
|
|
|
function Parser(options) {
|
|
this.tokens = [];
|
|
this.token = null;
|
|
this.options = options || marked.defaults;
|
|
this.options.renderer = this.options.renderer || new Renderer;
|
|
this.renderer = this.options.renderer;
|
|
this.renderer.options = this.options;
|
|
}
|
|
|
|
/**
|
|
* Static Parse Method
|
|
*/
|
|
|
|
Parser.parse = function(src, options, renderer) {
|
|
var parser = new Parser(options, renderer);
|
|
var out = parser.parse(src);
|
|
out = parser.postprocess(out);
|
|
return out;
|
|
};
|
|
|
|
/**
|
|
* Parse Loop
|
|
*/
|
|
|
|
Parser.prototype.parse = function(src) {
|
|
this.inline = new InlineLexer(src.links, this.options, this.renderer);
|
|
this.tokens = src.reverse();
|
|
|
|
var out = '';
|
|
while (this.next()) {
|
|
out += this.tok();
|
|
}
|
|
|
|
return out;
|
|
};
|
|
|
|
/**
|
|
* Post Processing - replace stashed HTML
|
|
**/
|
|
Parser.prototype.postprocess = function(output) {
|
|
for (var i = 0; i < htmlStash.length; i++) {
|
|
var stash = htmlStash[i];
|
|
var key = stash[0],
|
|
html = stash[1],
|
|
safe = stash[2];
|
|
if (!safe) {
|
|
html = escape(html);
|
|
} else {
|
|
html += '\n';
|
|
}
|
|
output = output.replace('<p>' + key + '</p>', html)
|
|
}
|
|
return output;
|
|
};
|
|
|
|
/**
|
|
* Next Token
|
|
*/
|
|
|
|
Parser.prototype.next = function() {
|
|
return this.token = this.tokens.pop();
|
|
};
|
|
|
|
/**
|
|
* Preview Next Token
|
|
*/
|
|
|
|
Parser.prototype.peek = function() {
|
|
return this.tokens[this.tokens.length - 1] || 0;
|
|
};
|
|
|
|
/**
|
|
* Parse Text Tokens
|
|
*/
|
|
|
|
Parser.prototype.parseText = function() {
|
|
var body = this.token.text;
|
|
|
|
while (this.peek().type === 'text') {
|
|
body += '\n' + this.next().text;
|
|
}
|
|
|
|
return this.inline.output(body);
|
|
};
|
|
|
|
/**
|
|
* Parse Current Token
|
|
*/
|
|
|
|
Parser.prototype.tok = function() {
|
|
switch (this.token.type) {
|
|
case 'space': {
|
|
return '';
|
|
}
|
|
case 'hr': {
|
|
return this.renderer.hr();
|
|
}
|
|
case 'code': {
|
|
return this.renderer.code(this.token.text,
|
|
this.token.lang,
|
|
this.token.escaped);
|
|
}
|
|
case 'table': {
|
|
var header = ''
|
|
, body = ''
|
|
, i
|
|
, row
|
|
, cell
|
|
, flags
|
|
, j;
|
|
|
|
// header
|
|
cell = '';
|
|
for (i = 0; i < this.token.header.length; i++) {
|
|
flags = { header: true, align: this.token.align[i] };
|
|
cell += this.renderer.tablecell(
|
|
this.inline.output(this.token.header[i]),
|
|
{ header: true, align: this.token.align[i] }
|
|
);
|
|
}
|
|
header += this.renderer.tablerow(cell);
|
|
|
|
for (i = 0; i < this.token.cells.length; i++) {
|
|
row = this.token.cells[i];
|
|
|
|
cell = '';
|
|
for (j = 0; j < row.length; j++) {
|
|
cell += this.renderer.tablecell(
|
|
this.inline.output(row[j]),
|
|
{ header: false, align: this.token.align[j] }
|
|
);
|
|
}
|
|
|
|
body += this.renderer.tablerow(cell);
|
|
}
|
|
return this.renderer.table(header, body);
|
|
}
|
|
case 'blockquote_start': {
|
|
var body = '';
|
|
|
|
while (this.next().type !== 'blockquote_end') {
|
|
body += this.tok();
|
|
}
|
|
|
|
return this.renderer.blockquote(body);
|
|
}
|
|
case 'list_start': {
|
|
var body = ''
|
|
, ordered = this.token.ordered;
|
|
|
|
while (this.next().type !== 'list_end') {
|
|
body += this.tok();
|
|
}
|
|
|
|
return this.renderer.list(body, ordered);
|
|
}
|
|
case 'list_item_start': {
|
|
var body = '';
|
|
|
|
while (this.next().type !== 'list_item_end') {
|
|
body += this.token.type === 'text'
|
|
? this.parseText()
|
|
: this.tok();
|
|
}
|
|
|
|
return this.renderer.listitem(body);
|
|
}
|
|
case 'loose_item_start': {
|
|
var body = '';
|
|
|
|
while (this.next().type !== 'list_item_end') {
|
|
body += this.tok();
|
|
}
|
|
|
|
return this.renderer.listitem(body);
|
|
}
|
|
case 'html': {
|
|
var html = !this.token.pre && !this.options.pedantic
|
|
? this.inline.output(this.token.text)
|
|
: this.token.text;
|
|
return this.renderer.html(html);
|
|
}
|
|
case 'paragraph': {
|
|
return this.renderer.paragraph(this.inline.output(this.token.text));
|
|
}
|
|
case 'text': {
|
|
return this.renderer.paragraph(this.parseText());
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Helpers
|
|
*/
|
|
|
|
function escape(html, encode) {
|
|
return html
|
|
.replace(!encode ? /&(?!#?\w+;)/g : /&/g, '&')
|
|
.replace(/</g, '<')
|
|
.replace(/>/g, '>')
|
|
.replace(/"/g, '"')
|
|
.replace(/'/g, ''');
|
|
}
|
|
|
|
function unescape(html) {
|
|
// explicitly match decimal, hex, and named HTML entities
|
|
return html.replace(/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/g, function(_, n) {
|
|
n = n.toLowerCase();
|
|
if (n === 'colon') return ':';
|
|
if (n.charAt(0) === '#') {
|
|
return n.charAt(1) === 'x'
|
|
? String.fromCharCode(parseInt(n.substring(2), 16))
|
|
: String.fromCharCode(+n.substring(1));
|
|
}
|
|
return '';
|
|
});
|
|
}
|
|
|
|
function replace(regex, opt) {
|
|
regex = regex.source;
|
|
opt = opt || '';
|
|
return function self(name, val) {
|
|
if (!name) return new RegExp(regex, opt);
|
|
val = val.source || val;
|
|
val = val.replace(/(^|[^\[])\^/g, '$1');
|
|
regex = regex.replace(name, val);
|
|
return self;
|
|
};
|
|
}
|
|
|
|
function noop() {}
|
|
noop.exec = noop;
|
|
|
|
function merge(obj) {
|
|
var i = 1
|
|
, target
|
|
, key;
|
|
|
|
for (; i < arguments.length; i++) {
|
|
target = arguments[i];
|
|
for (key in target) {
|
|
if (Object.prototype.hasOwnProperty.call(target, key)) {
|
|
obj[key] = target[key];
|
|
}
|
|
}
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
|
|
/**
|
|
* Marked
|
|
*/
|
|
|
|
function marked(src, opt, callback) {
|
|
if (callback || typeof opt === 'function') {
|
|
if (!callback) {
|
|
callback = opt;
|
|
opt = null;
|
|
}
|
|
|
|
opt = merge({}, marked.defaults, opt || {});
|
|
|
|
var highlight = opt.highlight
|
|
, tokens
|
|
, pending
|
|
, i = 0;
|
|
|
|
htmlStashCounter = 0;
|
|
htmlStash = [];
|
|
for (var k = 0; k < opt.preprocessors.length; k++) {
|
|
src = opt.preprocessors[k](src);
|
|
}
|
|
|
|
try {
|
|
tokens = Lexer.lex(src, opt)
|
|
} catch (e) {
|
|
return callback(e);
|
|
}
|
|
|
|
pending = tokens.length;
|
|
|
|
var done = function(err) {
|
|
if (err) {
|
|
opt.highlight = highlight;
|
|
return callback(err);
|
|
}
|
|
|
|
var out;
|
|
|
|
try {
|
|
out = Parser.parse(tokens, opt);
|
|
} catch (e) {
|
|
err = e;
|
|
}
|
|
|
|
opt.highlight = highlight;
|
|
|
|
return err
|
|
? callback(err)
|
|
: callback(null, out);
|
|
};
|
|
|
|
if (!highlight || highlight.length < 3) {
|
|
return done();
|
|
}
|
|
|
|
delete opt.highlight;
|
|
|
|
if (!pending) return done();
|
|
|
|
for (; i < tokens.length; i++) {
|
|
(function(token) {
|
|
if (token.type !== 'code') {
|
|
return --pending || done();
|
|
}
|
|
return highlight(token.text, token.lang, function(err, code) {
|
|
if (err) return done(err);
|
|
if (code == null || code === token.text) {
|
|
return --pending || done();
|
|
}
|
|
token.text = code;
|
|
token.escaped = true;
|
|
--pending || done();
|
|
});
|
|
})(tokens[i]);
|
|
}
|
|
|
|
return;
|
|
}
|
|
try {
|
|
if (opt) opt = merge({}, marked.defaults, opt);
|
|
htmlStashCounter = 0;
|
|
htmlStash = [];
|
|
for (var i = 0; i < marked.defaults.preprocessors.length; i++) {
|
|
src = marked.defaults.preprocessors[i](src);
|
|
}
|
|
return Parser.parse(Lexer.lex(src, opt), opt);
|
|
} catch (e) {
|
|
e.message += '\nPlease report this to https://github.com/chjj/marked.';
|
|
if ((opt || marked.defaults).silent) {
|
|
return '<p>An error occurred:</p><pre>'
|
|
+ escape(e.message + '', true)
|
|
+ '</pre>';
|
|
}
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Options
|
|
*/
|
|
|
|
marked.options =
|
|
marked.setOptions = function(opt) {
|
|
merge(marked.defaults, opt);
|
|
return marked;
|
|
};
|
|
|
|
marked.defaults = {
|
|
gfm: true,
|
|
emoji: false,
|
|
unicodeemoji: false,
|
|
avatar: false,
|
|
gravatar: false,
|
|
tables: true,
|
|
breaks: false,
|
|
pedantic: false,
|
|
sanitize: false,
|
|
sanitizer: null,
|
|
mangle: true,
|
|
smartLists: false,
|
|
silent: false,
|
|
highlight: null,
|
|
langPrefix: 'lang-',
|
|
smartypants: false,
|
|
headerPrefix: '',
|
|
renderer: new Renderer,
|
|
preprocessors: [],
|
|
xhtml: false
|
|
};
|
|
|
|
/**
|
|
* Expose
|
|
*/
|
|
|
|
marked.Parser = Parser;
|
|
marked.parser = Parser.parse;
|
|
|
|
marked.Renderer = Renderer;
|
|
|
|
marked.Lexer = Lexer;
|
|
marked.lexer = Lexer.lex;
|
|
|
|
marked.InlineLexer = InlineLexer;
|
|
marked.inlineLexer = InlineLexer.output;
|
|
|
|
marked.parse = marked;
|
|
|
|
marked.stashHtml = stashHtml;
|
|
|
|
if (typeof module !== 'undefined' && typeof exports === 'object') {
|
|
module.exports = marked;
|
|
} else if (typeof define === 'function' && define.amd) {
|
|
define(function() { return marked; });
|
|
} else {
|
|
this.marked = marked;
|
|
}
|
|
|
|
}).call(function() {
|
|
return this || (typeof window !== 'undefined' ? window : global);
|
|
}());
|