/** * marked - a markdown parser * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed) * https://github.com/markedjs/marked */ export const marked = (function (root) { "use strict"; /** * Block-Level Grammar */ var block = { newline: /^\n+/, code: /^( {4}[^\n]+\n*)+/, fences: /^ {0,3}(`{3,}|~{3,})([^`~\n]*)\n(?:|([\s\S]*?)\n)(?: {0,3}\1[~`]* *(?:\n+|$)|$)/, hr: /^ {0,3}((?:- *){3,}|(?:_ *){3,}|(?:\* *){3,})(?:\n+|$)/, heading: /^ {0,3}(#{1,6}) +([^\n]*?)(?: +#+)? *(?:\n+|$)/, blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/, list: /^( {0,3})(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/, html: "^ {0,3}(?:" + // optional indentation "<(script|pre|style)[\\s>][\\s\\S]*?(?:[^\\n]*\\n+|$)" + // (1) "|comment[^\\n]*(\\n+|$)" + // (2) "|<\\?[\\s\\S]*?\\?>\\n*" + // (3) "|\\n*" + // (4) "|\\n*" + // (5) "|)[\\s\\S]*?(?:\\n{2,}|$)" + // (6) "|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$)" + // (7) open tag "|(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$)" + // (7) closing tag ")", def: /^ {0,3}\[(label)\]: *\n? *]+)>?(?:(?: +\n? *| *\n *)(title))? *(?:\n+|$)/, nptable: noop, table: noop, lheading: /^([^\n]+)\n {0,3}(=+|-+) *(?:\n+|$)/, // regex template, placeholders will be replaced according to different paragraph // interruption rules of commonmark and the original markdown spec: _paragraph: /^([^\n]+(?:\n(?!hr|heading|lheading|blockquote|fences|list|html)[^\n]+)*)/, text: /^[^\n]+/ }; block._label = /(?!\s*\])(?:\\[\[\]]|[^\[\]])+/; block._title = /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/; block.def = edit(block.def) .replace("label", block._label) .replace("title", block._title) .getRegex(); block.bullet = /(?:[*+-]|\d{1,9}\.)/; block.item = /^( *)(bull) ?[^\n]*(?:\n(?!\1bull ?)[^\n]*)*/; block.item = edit(block.item, "gm").replace(/bull/g, block.bullet).getRegex(); block.list = edit(block.list) .replace(/bull/g, block.bullet) .replace( "hr", "\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))" ) .replace("def", "\\n+(?=" + block.def.source + ")") .getRegex(); block._tag = "address|article|aside|base|basefont|blockquote|body|caption" + "|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption" + "|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe" + "|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option" + "|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr" + "|track|ul"; block._comment = //; block.html = edit(block.html, "i") .replace("comment", block._comment) .replace("tag", block._tag) .replace( "attribute", / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/ ) .getRegex(); block.paragraph = edit(block._paragraph) .replace("hr", block.hr) .replace("heading", " {0,3}#{1,6} +") .replace("|lheading", "") // setex headings don't interrupt commonmark paragraphs .replace("blockquote", " {0,3}>") .replace("fences", " {0,3}(?:`{3,}|~{3,})[^`\\n]*\\n") .replace("list", " {0,3}(?:[*+-]|1[.)]) ") // only lists starting from 1 can interrupt .replace("html", ")|<(?:script|pre|style|!--)") .replace("tag", block._tag) // pars can be interrupted by type (6) html blocks .getRegex(); block.blockquote = edit(block.blockquote) .replace("paragraph", block.paragraph) .getRegex(); /** * Normal Block Grammar */ block.normal = merge({}, block); /** * GFM Block Grammar */ block.gfm = merge({}, block.normal, { nptable: /^ *([^|\n ].*\|.*)\n *([-:]+ *\|[-| :]*)(?:\n((?:.*[^>\n ].*(?:\n|$))*)\n*|$)/, table: /^ *\|(.+)\n *\|?( *[-:]+[-| :]*)(?:\n((?: *[^>\n ].*(?:\n|$))*)\n*|$)/ }); /** * Pedantic grammar (original John Gruber's loose markdown specification) */ block.pedantic = merge({}, block.normal, { html: edit( "^ *(?:comment *(?:\\n|\\s*$)" + "|<(tag)[\\s\\S]+? *(?:\\n{2,}|\\s*$)" + // closed tag "|\\s]*)*?/?> *(?:\\n{2,}|\\s*$))" ) .replace("comment", block._comment) .replace( /tag/g, "(?!(?:" + "a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub" + "|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)" + "\\b)\\w+(?!:|[^\\w\\s@]*@)\\b" ) .getRegex(), def: /^ *\[([^\]]+)\]: *]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/, heading: /^ *(#{1,6}) *([^\n]+?) *(?:#+ *)?(?:\n+|$)/, fences: noop, // fences not supported paragraph: edit(block.normal._paragraph) .replace("hr", block.hr) .replace("heading", " *#{1,6} *[^\n]") .replace("lheading", block.lheading) .replace("blockquote", " {0,3}>") .replace("|fences", "") .replace("|list", "") .replace("|html", "") .getRegex() }); /** * Block Lexer */ function Lexer(options) { this.tokens = []; this.tokens.links = Object.create(null); this.options = options || marked.defaults; this.rules = block.normal; if (this.options.pedantic) { this.rules = block.pedantic; } else if (this.options.gfm) { this.rules = block.gfm; } } /** * Expose Block Rules */ Lexer.rules = block; /** * Static Lex Method */ Lexer.lex = function (src, options) { var lexer = new Lexer(options); return lexer.lex(src); }; /** * Preprocessing */ Lexer.prototype.lex = function (src) { src = src.replace(/\r\n|\r/g, "\n").replace(/\t/g, " "); return this.token(src, true); }; /** * Lexing */ Lexer.prototype.token = function (src, top) { src = src.replace(/^ +$/gm, ""); var next, loose, cap, bull, b, item, listStart, listItems, t, space, i, tag, l, isordered, istask, ischecked; while (src) { // newline if ((cap = this.rules.newline.exec(src))) { src = src.substring(cap[0].length); if (cap[0].length > 1) { this.tokens.push({ type: "space" }); } } // code if ((cap = this.rules.code.exec(src))) { var lastToken = this.tokens[this.tokens.length - 1]; src = src.substring(cap[0].length); // An indented code block cannot interrupt a paragraph. if (lastToken && lastToken.type === "paragraph") { lastToken.text += "\n" + cap[0].trimRight(); } else { cap = cap[0].replace(/^ {4}/gm, ""); this.tokens.push({ type: "code", codeBlockStyle: "indented", text: !this.options.pedantic ? rtrim(cap, "\n") : cap }); } continue; } // fences if ((cap = this.rules.fences.exec(src))) { src = src.substring(cap[0].length); this.tokens.push({ type: "code", lang: cap[2] ? cap[2].trim() : cap[2], text: cap[3] || "" }); continue; } // heading if ((cap = this.rules.heading.exec(src))) { src = src.substring(cap[0].length); this.tokens.push({ type: "heading", depth: cap[1].length, text: cap[2] }); continue; } // table no leading pipe (gfm) if ((cap = this.rules.nptable.exec(src))) { item = { type: "table", header: splitCells(cap[1].replace(/^ *| *\| *$/g, "")), align: cap[2].replace(/^ *|\| *$/g, "").split(/ *\| */), cells: cap[3] ? cap[3].replace(/\n$/, "").split("\n") : [] }; if (item.header.length === item.align.length) { src = src.substring(cap[0].length); for (i = 0; i < item.align.length; i++) { if (/^ *-+: *$/.test(item.align[i])) { item.align[i] = "right"; } else if (/^ *:-+: *$/.test(item.align[i])) { item.align[i] = "center"; } else if (/^ *:-+ *$/.test(item.align[i])) { item.align[i] = "left"; } else { item.align[i] = null; } } for (i = 0; i < item.cells.length; i++) { item.cells[i] = splitCells(item.cells[i], item.header.length); } this.tokens.push(item); continue; } } // hr if ((cap = this.rules.hr.exec(src))) { src = src.substring(cap[0].length); this.tokens.push({ type: "hr" }); continue; } // blockquote if ((cap = this.rules.blockquote.exec(src))) { src = src.substring(cap[0].length); this.tokens.push({ type: "blockquote_start" }); cap = cap[0].replace(/^ *> ?/gm, ""); // Pass `top` to keep the current // "toplevel" state. This is exactly // how markdown.pl works. this.token(cap, top); this.tokens.push({ type: "blockquote_end" }); continue; } // list if ((cap = this.rules.list.exec(src))) { src = src.substring(cap[0].length); bull = cap[2]; isordered = bull.length > 1; listStart = { type: "list_start", ordered: isordered, start: isordered ? +bull : "", loose: false }; this.tokens.push(listStart); // Get each top-level item. cap = cap[0].match(this.rules.item); listItems = []; next = false; l = cap.length; i = 0; for (; i < l; i++) { item = cap[i]; // Remove the list item's bullet // so it is seen as the next token. space = item.length; item = item.replace(/^ *([*+-]|\d+\.) */, ""); // Outdent whatever the // list item contains. Hacky. if (~item.indexOf("\n ")) { space -= item.length; item = !this.options.pedantic ? item.replace(new RegExp("^ {1," + space + "}", "gm"), "") : item.replace(/^ {1,4}/gm, ""); } // Determine whether the next list item belongs here. // Backpedal if it does not belong in this list. if (i !== l - 1) { b = block.bullet.exec(cap[i + 1])[0]; if ( bull.length > 1 ? b.length === 1 : b.length > 1 || (this.options.smartLists && b !== bull) ) { src = cap.slice(i + 1).join("\n") + src; i = l - 1; } } // Determine whether item is loose or not. // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/ // for discount behavior. loose = next || /\n\n(?!\s*$)/.test(item); if (i !== l - 1) { next = item.charAt(item.length - 1) === "\n"; if (!loose) loose = next; } if (loose) { listStart.loose = true; } // Check for task list items istask = /^\[[ xX]\] /.test(item); ischecked = undefined; if (istask) { ischecked = item[1] !== " "; item = item.replace(/^\[[ xX]\] +/, ""); } t = { type: "list_item_start", task: istask, checked: ischecked, loose: loose }; listItems.push(t); this.tokens.push(t); // Recurse. this.token(item, false); this.tokens.push({ type: "list_item_end" }); } if (listStart.loose) { l = listItems.length; i = 0; for (; i < l; i++) { listItems[i].loose = true; } } this.tokens.push({ type: "list_end" }); continue; } // html if ((cap = this.rules.html.exec(src))) { src = src.substring(cap[0].length); this.tokens.push({ type: this.options.sanitize ? "paragraph" : "html", pre: !this.options.sanitizer && (cap[1] === "pre" || cap[1] === "script" || cap[1] === "style"), text: this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]) : cap[0] }); continue; } // def if (top && (cap = this.rules.def.exec(src))) { src = src.substring(cap[0].length); if (cap[3]) cap[3] = cap[3].substring(1, cap[3].length - 1); tag = cap[1].toLowerCase().replace(/\s+/g, " "); if (!this.tokens.links[tag]) { this.tokens.links[tag] = { href: cap[2], title: cap[3] }; } continue; } // table (gfm) if ((cap = this.rules.table.exec(src))) { item = { type: "table", header: splitCells(cap[1].replace(/^ *| *\| *$/g, "")), align: cap[2].replace(/^ *|\| *$/g, "").split(/ *\| */), cells: cap[3] ? cap[3].replace(/\n$/, "").split("\n") : [] }; if (item.header.length === item.align.length) { src = src.substring(cap[0].length); for (i = 0; i < item.align.length; i++) { if (/^ *-+: *$/.test(item.align[i])) { item.align[i] = "right"; } else if (/^ *:-+: *$/.test(item.align[i])) { item.align[i] = "center"; } else if (/^ *:-+ *$/.test(item.align[i])) { item.align[i] = "left"; } else { item.align[i] = null; } } for (i = 0; i < item.cells.length; i++) { item.cells[i] = splitCells( item.cells[i].replace(/^ *\| *| *\| *$/g, ""), item.header.length ); } this.tokens.push(item); continue; } } // lheading if ((cap = this.rules.lheading.exec(src))) { src = src.substring(cap[0].length); this.tokens.push({ type: "heading", depth: cap[2].charAt(0) === "=" ? 1 : 2, text: cap[1] }); continue; } // top-level paragraph if (top && (cap = this.rules.paragraph.exec(src))) { src = src.substring(cap[0].length); this.tokens.push({ type: "paragraph", text: cap[1].charAt(cap[1].length - 1) === "\n" ? cap[1].slice(0, -1) : cap[1] }); continue; } // text if ((cap = this.rules.text.exec(src))) { // Top-level should never reach here. src = src.substring(cap[0].length); this.tokens.push({ type: "text", text: cap[0] }); continue; } if (src) { throw new Error("Infinite loop on byte: " + src.charCodeAt(0)); } } return this.tokens; }; /** * Inline-Level Grammar */ var inline = { escape: /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/, autolink: /^<(scheme:[^\s\x00-\x1f<>]*|email)>/, url: noop, tag: "^comment" + "|^" + // self-closing tag "|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>" + // open tag "|^<\\?[\\s\\S]*?\\?>" + // processing instruction, e.g. "|^" + // declaration, e.g. "|^", // CDATA section link: /^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/, reflink: /^!?\[(label)\]\[(?!\s*\])((?:\\[\[\]]?|[^\[\]\\])+)\]/, nolink: /^!?\[(?!\s*\])((?:\[[^\[\]]*\]|\\[\[\]]|[^\[\]])*)\](?:\[\])?/, strong: /^__([^\s_])__(?!_)|^\*\*([^\s*])\*\*(?!\*)|^__([^\s][\s\S]*?[^\s])__(?!_)|^\*\*([^\s][\s\S]*?[^\s])\*\*(?!\*)/, em: /^_([^\s_])_(?!_)|^\*([^\s*<\[])\*(?!\*)|^_([^\s<][\s\S]*?[^\s_])_(?!_|[^\spunctuation])|^_([^\s_<][\s\S]*?[^\s])_(?!_|[^\spunctuation])|^\*([^\s<"][\s\S]*?[^\s\*])\*(?!\*|[^\spunctuation])|^\*([^\s*"<\[][\s\S]*?[^\s])\*(?!\*)/, code: /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/, br: /^( {2,}|\\)\n(?!\s*$)/, del: noop, text: /^(`+|[^`])(?:[\s\S]*?(?:(?=[\\?@\\[^_{|}~"; inline.em = edit(inline.em) .replace(/punctuation/g, inline._punctuation) .getRegex(); inline._escapes = /\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g; inline._scheme = /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/; inline._email = /[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/; inline.autolink = edit(inline.autolink) .replace("scheme", inline._scheme) .replace("email", inline._email) .getRegex(); inline._attribute = /\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/; inline.tag = edit(inline.tag) .replace("comment", block._comment) .replace("attribute", inline._attribute) .getRegex(); inline._label = /(?:\[[^\[\]]*\]|\\.|`[^`]*`|[^\[\]\\`])*?/; inline._href = /<(?:\\[<>]?|[^\s<>\\])*>|[^\s\x00-\x1f]*/; inline._title = /"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/; inline.link = edit(inline.link) .replace("label", inline._label) .replace("href", inline._href) .replace("title", inline._title) .getRegex(); inline.reflink = edit(inline.reflink) .replace("label", inline._label) .getRegex(); /** * Normal Inline Grammar */ inline.normal = merge({}, inline); /** * Pedantic Inline Grammar */ inline.pedantic = merge({}, inline.normal, { strong: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/, em: /^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/, link: edit(/^!?\[(label)\]\((.*?)\)/) .replace("label", inline._label) .getRegex(), reflink: edit(/^!?\[(label)\]\s*\[([^\]]*)\]/) .replace("label", inline._label) .getRegex() }); /** * GFM Inline Grammar */ inline.gfm = merge({}, inline.normal, { escape: edit(inline.escape).replace("])", "~|])").getRegex(), _extended_email: /[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/, url: /^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/, _backpedal: /(?:[^?!.,:;*_~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_~)]+(?!$))+/, del: /^~+(?=\S)([\s\S]*?\S)~+/, text: /^(`+|[^`])(?:[\s\S]*?(?:(?=[\\/i.test(cap[0])) { this.inLink = false; } if (!this.inRawBlock && /^<(pre|code|kbd|script)(\s|>)/i.test(cap[0])) { this.inRawBlock = true; } else if ( this.inRawBlock && /^<\/(pre|code|kbd|script)(\s|>)/i.test(cap[0]) ) { this.inRawBlock = 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))) { var lastParenIndex = findClosingBracket(cap[2], "()"); if (lastParenIndex > -1) { var linkLen = 4 + cap[1].length + lastParenIndex; cap[2] = cap[2].substring(0, lastParenIndex); cap[0] = cap[0].substring(0, linkLen).trim(); cap[3] = ""; } src = src.substring(cap[0].length); this.inLink = true; href = cap[2]; if (this.options.pedantic) { link = /^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(href); if (link) { href = link[1]; title = link[3]; } else { title = ""; } } else { title = cap[3] ? cap[3].slice(1, -1) : ""; } href = href.trim().replace(/^<([\s\S]*)>$/, "$1"); out += this.outputLink(cap, { href: InlineLexer.escapes(href), title: InlineLexer.escapes(title) }); 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; } // strong if ((cap = this.rules.strong.exec(src))) { src = src.substring(cap[0].length); out += this.renderer.strong( this.output(cap[4] || cap[3] || 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[6] || cap[5] || cap[4] || cap[3] || cap[2] || cap[1]) ); continue; } // code if ((cap = this.rules.code.exec(src))) { src = src.substring(cap[0].length); out += this.renderer.codespan(escape(cap[2].trim(), 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; } // autolink if ((cap = this.rules.autolink.exec(src))) { src = src.substring(cap[0].length); if (cap[2] === "@") { text = escape(this.mangle(cap[1])); href = "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))) { if (cap[2] === "@") { text = escape(cap[0]); href = "mailto:" + text; } else { // do extended autolink path validation do { prevCapZero = cap[0]; cap[0] = this.rules._backpedal.exec(cap[0])[0]; } while (prevCapZero !== cap[0]); text = escape(cap[0]); if (cap[1] === "www.") { href = "http://" + text; } else { href = text; } } src = src.substring(cap[0].length); out += this.renderer.link(href, null, text); continue; } // text if ((cap = this.rules.text.exec(src))) { src = src.substring(cap[0].length); if (this.inRawBlock) { out += this.renderer.text( this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]) : cap[0] ); } else { out += this.renderer.text(escape(this.smartypants(cap[0]))); } continue; } if (src) { throw new Error("Infinite loop on byte: " + src.charCodeAt(0)); } } return out; }; InlineLexer.escapes = function (text) { return text ? text.replace(InlineLexer.rules._escapes, "$1") : text; }; /** * Compile Link */ InlineLexer.prototype.outputLink = function (cap, link) { var href = 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])); }; /** * 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 || marked.defaults; } Renderer.prototype.code = function (code, infostring, escaped) { var lang = (infostring || "").match(/\S*/)[0]; if (this.options.highlight) { var out = this.options.highlight(code, lang); if (out != null && out !== code) { escaped = true; code = out; } } if (!lang) { return ( "
" + (escaped ? code : escape(code, true)) + "
" ); } return ( '
' +
			(escaped ? code : escape(code, true)) +
			"
\n" ); }; Renderer.prototype.blockquote = function (quote) { return "
\n" + quote + "
\n"; }; Renderer.prototype.html = function (html) { return html; }; Renderer.prototype.heading = function (text, level, raw, slugger) { if (this.options.headerIds) { return ( "' + text + "\n" ); } // ignore IDs return "" + text + "\n"; }; Renderer.prototype.hr = function () { return this.options.xhtml ? "
\n" : "
\n"; }; Renderer.prototype.list = function (body, ordered, start) { var type = ordered ? "ol" : "ul", startatt = ordered && start !== 1 ? ' start="' + start + '"' : ""; return "<" + type + startatt + ">\n" + body + "\n"; }; Renderer.prototype.listitem = function (text) { return "
  • " + text + "
  • \n"; }; Renderer.prototype.checkbox = function (checked) { return ( " " ); }; Renderer.prototype.paragraph = function (text) { return "

    " + text + "

    \n"; }; Renderer.prototype.table = function (header, body) { if (body) body = "" + body + ""; return ( "\n" + "\n" + header + "\n" + body + "
    \n" ); }; Renderer.prototype.tablerow = function (content) { return "\n" + content + "\n"; }; Renderer.prototype.tablecell = function (content, flags) { var type = flags.header ? "th" : "td"; var tag = flags.align ? "<" + type + ' align="' + flags.align + '">' : "<" + type + ">"; return tag + content + "\n"; }; // span level renderer Renderer.prototype.strong = function (text) { return "" + text + ""; }; Renderer.prototype.em = function (text) { return "" + text + ""; }; Renderer.prototype.codespan = function (text) { return "" + text + ""; }; Renderer.prototype.br = function () { return this.options.xhtml ? "
    " : "
    "; }; Renderer.prototype.del = function (text) { return "" + text + ""; }; Renderer.prototype.link = function (href, title, text) { href = cleanUrl(this.options.sanitize, this.options.baseUrl, href); if (href === null) { return text; } var regEx = new RegExp("^@@/static", "g"); if (regEx.test(href)) { href = href.substring(3); } else { href = escape(href); } var out = ""; return out; }; Renderer.prototype.image = function (href, title, text) { href = cleanUrl(this.options.sanitize, this.options.baseUrl, href); if (href === null) { return text; } var out = '' + text + '" : ">"; return out; }; Renderer.prototype.text = function (text) { return text; }; /** * TextRenderer * returns only the textual part of the token */ function TextRenderer() {} // no need for block level renderers TextRenderer.prototype.strong = TextRenderer.prototype.em = TextRenderer.prototype.codespan = TextRenderer.prototype.del = TextRenderer.prototype.text = function (text) { return text; }; TextRenderer.prototype.link = TextRenderer.prototype.image = function ( href, title, text ) { return "" + text; }; TextRenderer.prototype.br = function () { return ""; }; /** * 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; this.slugger = new Slugger(); } /** * Static Parse Method */ Parser.parse = function (src, options) { var parser = new Parser(options); return parser.parse(src); }; /** * Parse Loop */ Parser.prototype.parse = function (src) { this.inline = new InlineLexer(src.links, this.options); // use an InlineLexer with a TextRenderer to extract pure text this.inlineText = new InlineLexer( src.links, merge({}, this.options, { renderer: new TextRenderer() }) ); this.tokens = src.reverse(); var out = ""; while (this.next()) { out += this.tok(); } return out; }; /** * Next Token */ Parser.prototype.next = function () { this.token = this.tokens.pop(); return this.token; }; /** * 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 "heading": { return this.renderer.heading( this.inline.output(this.token.text), this.token.depth, unescape(this.inlineText.output(this.token.text)), this.slugger ); } case "code": { return this.renderer.code( this.token.text, this.token.lang, this.token.escaped ); } case "table": { var header = "", body = "", i, row, cell, j; // header cell = ""; for (i = 0; i < this.token.header.length; 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": { body = ""; while (this.next().type !== "blockquote_end") { body += this.tok(); } return this.renderer.blockquote(body); } case "list_start": { body = ""; var ordered = this.token.ordered, start = this.token.start; while (this.next().type !== "list_end") { body += this.tok(); } return this.renderer.list(body, ordered, start); } case "list_item_start": { body = ""; var loose = this.token.loose; var checked = this.token.checked; var task = this.token.task; if (this.token.task) { if (loose) { if (this.peek().type === "text") { var nextToken = this.peek(); nextToken.text = this.renderer.checkbox(checked) + " " + nextToken.text; } else { this.tokens.push({ type: "text", text: this.renderer.checkbox(checked) }); } } else { body += this.renderer.checkbox(checked); } } while (this.next().type !== "list_item_end") { body += !loose && this.token.type === "text" ? this.parseText() : this.tok(); } return this.renderer.listitem(body, task, checked); } case "html": { // TODO parse inline content if parameter markdown=1 return this.renderer.html(this.token.text); } case "paragraph": { return this.renderer.paragraph(this.inline.output(this.token.text)); } case "text": { return this.renderer.paragraph(this.parseText()); } default: { var errMsg = 'Token with "' + this.token.type + '" type was not found.'; if (this.options.silent) { console.log(errMsg); } else { throw new Error(errMsg); } } } }; /** * Slugger generates header id */ function Slugger() { this.seen = {}; } /** * Convert string to unique id */ Slugger.prototype.slug = function (value) { var slug = value .toLowerCase() .trim() .replace( /[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g, "" ) .replace(/\s/g, "-"); if (this.seen.hasOwnProperty(slug)) { var originalSlug = slug; do { this.seen[originalSlug]++; slug = originalSlug + "-" + this.seen[originalSlug]; } while (this.seen.hasOwnProperty(slug)); } this.seen[slug] = 0; return slug; }; /** * Helpers */ function escape(html, encode) { if (encode) { if (escape.escapeTest.test(html)) { return html.replace(escape.escapeReplace, function (ch) { return escape.replacements[ch]; }); } } else { if (escape.escapeTestNoEncode.test(html)) { return html.replace(escape.escapeReplaceNoEncode, function (ch) { return escape.replacements[ch]; }); } } return html; } escape.escapeTest = /[&<>"']/; escape.escapeReplace = /[&<>"']/g; escape.replacements = { "&": "&", "<": "<", ">": ">", '"': """, "'": "'" }; escape.escapeTestNoEncode = /[<>"']|&(?!#?\w+;)/; escape.escapeReplaceNoEncode = /[<>"']|&(?!#?\w+;)/g; function unescape(html) { // explicitly match decimal, hex, and named HTML entities return html.replace( /&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/gi, 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 edit(regex, opt) { regex = regex.source || regex; opt = opt || ""; return { replace: function (name, val) { val = val.source || val; val = val.replace(/(^|[^\[])\^/g, "$1"); regex = regex.replace(name, val); return this; }, getRegex: function () { return new RegExp(regex, opt); } }; } function cleanUrl(sanitize, base, href) { if (sanitize) { try { var prot = decodeURIComponent(unescape(href)) .replace(/[^\w:]/g, "") .toLowerCase(); } catch (e) { return null; } if ( prot.indexOf("javascript:") === 0 || prot.indexOf("vbscript:") === 0 || prot.indexOf("data:") === 0 ) { return null; } } if (base && !originIndependentUrl.test(href)) { href = resolveUrl(base, href); } try { href = encodeURI(href).replace(/%25/g, "%"); } catch (e) { return null; } return href; } function resolveUrl(base, href) { if (!baseUrls[" " + base]) { // we can ignore everything in base after the last slash of its path component, // but we might need to add _that_ // https://tools.ietf.org/html/rfc3986#section-3 if (/^[^:]+:\/*[^/]*$/.test(base)) { baseUrls[" " + base] = base + "/"; } else { baseUrls[" " + base] = rtrim(base, "/", true); } } base = baseUrls[" " + base]; var relativeBase = base.indexOf(":") === -1; if (href.slice(0, 2) === "//") { if (relativeBase) { return href; } return base.replace(/^([^:]+:)[\s\S]*$/, "$1") + href; } else if (href.charAt(0) === "/") { if (relativeBase) { return href; } return base.replace(/^([^:]+:\/*[^/]*)[\s\S]*$/, "$1") + href; } else { return base + href; } } var baseUrls = {}; var originIndependentUrl = /^$|^[a-z][a-z0-9+.-]*:|^[?#]/i; 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; } function splitCells(tableRow, count) { // ensure that every cell-delimiting pipe has a space // before it to distinguish it from an escaped pipe var row = tableRow.replace(/\|/g, function (match, offset, str) { var escaped = false, curr = offset; while (--curr >= 0 && str[curr] === "\\") escaped = !escaped; if (escaped) { // odd number of slashes means | is escaped // so we leave it alone return "|"; } else { // add space before unescaped | return " |"; } }), cells = row.split(/ \|/), i = 0; if (cells.length > count) { cells.splice(count); } else { while (cells.length < count) cells.push(""); } for (; i < cells.length; i++) { // leading or trailing whitespace is ignored per the gfm spec cells[i] = cells[i].trim().replace(/\\\|/g, "|"); } return cells; } // Remove trailing 'c's. Equivalent to str.replace(/c*$/, ''). // /c*$/ is vulnerable to REDOS. // invert: Remove suffix of non-c chars instead. Default falsey. function rtrim(str, c, invert) { if (str.length === 0) { return ""; } // Length of suffix matching the invert condition. var suffLen = 0; // Step left until we fail to match the invert condition. while (suffLen < str.length) { var currChar = str.charAt(str.length - suffLen - 1); if (currChar === c && !invert) { suffLen++; } else if (currChar !== c && invert) { suffLen++; } else { break; } } return str.substr(0, str.length - suffLen); } function findClosingBracket(str, b) { if (str.indexOf(b[1]) === -1) { return -1; } var level = 0; for (var i = 0; i < str.length; i++) { if (str[i] === "\\") { i++; } else if (str[i] === b[0]) { level++; } else if (str[i] === b[1]) { level--; if (level < 0) { return i; } } } return -1; } function checkSanitizeDeprecation(opt) { if (opt && opt.sanitize && !opt.silent) { console.warn( "marked(): sanitize and sanitizer parameters are deprecated since version 0.7.0, should not be used and will be removed in the future. Read more here: https://marked.js.org/#/USING_ADVANCED.md#options" ); } } /** * Marked */ function marked(src, opt, callback) { // throw error in case of non string input if (typeof src === "undefined" || src === null) { throw new Error("marked(): input parameter is undefined or null"); } if (typeof src !== "string") { throw new Error( "marked(): input parameter is of type " + Object.prototype.toString.call(src) + ", string expected" ); } if (callback || typeof opt === "function") { if (!callback) { callback = opt; opt = null; } opt = merge({}, marked.defaults, opt || {}); checkSanitizeDeprecation(opt); var highlight = opt.highlight, tokens, pending, i = 0; 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); checkSanitizeDeprecation(opt); return Parser.parse(Lexer.lex(src, opt), opt); } catch (e) { e.message += "\nPlease report this to https://github.com/markedjs/marked."; if ((opt || marked.defaults).silent) { return ( "

    An error occurred:

    " +
    					escape(e.message + "", true) +
    					"
    " ); } throw e; } } /** * Options */ marked.options = marked.setOptions = function (opt) { merge(marked.defaults, opt); return marked; }; marked.getDefaults = function () { return { baseUrl: null, breaks: false, gfm: true, headerIds: true, headerPrefix: "", highlight: null, langPrefix: "language-", mangle: true, pedantic: false, renderer: new Renderer(), sanitize: false, sanitizer: null, silent: false, smartLists: false, smartypants: false, xhtml: false }; }; marked.defaults = marked.getDefaults(); /** * Expose */ marked.Parser = Parser; marked.parser = Parser.parse; marked.Renderer = Renderer; marked.TextRenderer = TextRenderer; marked.Lexer = Lexer; marked.lexer = Lexer.lex; marked.InlineLexer = InlineLexer; marked.inlineLexer = InlineLexer.output; marked.Slugger = Slugger; marked.parse = marked; if (typeof module !== "undefined" && typeof exports === "object") { module.exports = marked; } else if (typeof define === "function" && define.amd) { define(function () { return marked; }); } else { root.marked = marked; } return marked; })(this || (typeof window !== "undefined" ? window : global));