2804 lines
75 KiB
JavaScript
2804 lines
75 KiB
JavaScript
/**
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* marked - a markdown parser
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* Copyright (c) 2011-2022, Christopher Jeffrey. (MIT Licensed)
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* https://github.com/markedjs/marked
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*/
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/**
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* DO NOT EDIT THIS FILE
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* The code in this file is generated from files in ./src/
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*/
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function getDefaults() {
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return {
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async: false,
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baseUrl: null,
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breaks: false,
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extensions: null,
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gfm: true,
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headerIds: true,
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headerPrefix: '',
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highlight: null,
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langPrefix: 'language-',
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mangle: true,
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pedantic: false,
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renderer: null,
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sanitize: false,
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sanitizer: null,
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silent: false,
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smartLists: false,
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smartypants: false,
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tokenizer: null,
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walkTokens: null,
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xhtml: false
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};
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}
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let defaults = getDefaults();
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function changeDefaults(newDefaults) {
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defaults = newDefaults;
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}
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/**
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* Helpers
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*/
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const escapeTest = /[&<>"']/;
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const escapeReplace = /[&<>"']/g;
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const escapeTestNoEncode = /[<>"']|&(?!#?\w+;)/;
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const escapeReplaceNoEncode = /[<>"']|&(?!#?\w+;)/g;
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const escapeReplacements = {
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'&': '&',
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'<': '<',
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'>': '>',
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'"': '"',
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"'": '''
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};
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const getEscapeReplacement = (ch) => escapeReplacements[ch];
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function escape(html, encode) {
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if (encode) {
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if (escapeTest.test(html)) {
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return html.replace(escapeReplace, getEscapeReplacement);
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}
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} else {
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if (escapeTestNoEncode.test(html)) {
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return html.replace(escapeReplaceNoEncode, getEscapeReplacement);
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}
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}
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return html;
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}
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const unescapeTest = /&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/ig;
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/**
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* @param {string} html
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*/
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function unescape(html) {
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// explicitly match decimal, hex, and named HTML entities
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return html.replace(unescapeTest, (_, n) => {
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n = n.toLowerCase();
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if (n === 'colon') return ':';
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if (n.charAt(0) === '#') {
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return n.charAt(1) === 'x'
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? String.fromCharCode(parseInt(n.substring(2), 16))
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: String.fromCharCode(+n.substring(1));
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}
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return '';
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});
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}
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const caret = /(^|[^\[])\^/g;
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/**
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* @param {string | RegExp} regex
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* @param {string} opt
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*/
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function edit(regex, opt) {
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regex = typeof regex === 'string' ? regex : regex.source;
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opt = opt || '';
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const obj = {
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replace: (name, val) => {
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val = val.source || val;
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val = val.replace(caret, '$1');
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regex = regex.replace(name, val);
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return obj;
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},
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getRegex: () => {
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return new RegExp(regex, opt);
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}
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};
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return obj;
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}
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const nonWordAndColonTest = /[^\w:]/g;
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const originIndependentUrl = /^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;
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/**
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* @param {boolean} sanitize
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* @param {string} base
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* @param {string} href
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*/
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function cleanUrl(sanitize, base, href) {
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if (sanitize) {
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let prot;
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try {
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prot = decodeURIComponent(unescape(href))
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.replace(nonWordAndColonTest, '')
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.toLowerCase();
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} catch (e) {
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return null;
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}
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if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0 || prot.indexOf('data:') === 0) {
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return null;
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}
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}
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if (base && !originIndependentUrl.test(href)) {
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href = resolveUrl(base, href);
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}
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try {
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href = encodeURI(href).replace(/%25/g, '%');
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} catch (e) {
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return null;
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}
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return href;
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}
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const baseUrls = {};
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const justDomain = /^[^:]+:\/*[^/]*$/;
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const protocol = /^([^:]+:)[\s\S]*$/;
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const domain = /^([^:]+:\/*[^/]*)[\s\S]*$/;
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/**
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* @param {string} base
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* @param {string} href
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*/
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function resolveUrl(base, href) {
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if (!baseUrls[' ' + base]) {
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// we can ignore everything in base after the last slash of its path component,
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// but we might need to add _that_
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// https://tools.ietf.org/html/rfc3986#section-3
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if (justDomain.test(base)) {
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baseUrls[' ' + base] = base + '/';
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} else {
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baseUrls[' ' + base] = rtrim(base, '/', true);
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}
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}
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base = baseUrls[' ' + base];
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const relativeBase = base.indexOf(':') === -1;
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if (href.substring(0, 2) === '//') {
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if (relativeBase) {
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return href;
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}
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return base.replace(protocol, '$1') + href;
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} else if (href.charAt(0) === '/') {
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if (relativeBase) {
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return href;
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}
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return base.replace(domain, '$1') + href;
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} else {
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return base + href;
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}
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}
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const noopTest = { exec: function noopTest() {} };
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function merge(obj) {
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let i = 1,
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target,
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key;
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for (; i < arguments.length; i++) {
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target = arguments[i];
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for (key in target) {
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if (Object.prototype.hasOwnProperty.call(target, key)) {
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obj[key] = target[key];
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}
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}
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}
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return obj;
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}
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function splitCells(tableRow, count) {
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// ensure that every cell-delimiting pipe has a space
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// before it to distinguish it from an escaped pipe
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const row = tableRow.replace(/\|/g, (match, offset, str) => {
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let escaped = false,
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curr = offset;
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while (--curr >= 0 && str[curr] === '\\') escaped = !escaped;
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if (escaped) {
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// odd number of slashes means | is escaped
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// so we leave it alone
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return '|';
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} else {
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// add space before unescaped |
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return ' |';
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}
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}),
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cells = row.split(/ \|/);
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let i = 0;
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// First/last cell in a row cannot be empty if it has no leading/trailing pipe
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if (!cells[0].trim()) { cells.shift(); }
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if (cells.length > 0 && !cells[cells.length - 1].trim()) { cells.pop(); }
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if (cells.length > count) {
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cells.splice(count);
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} else {
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while (cells.length < count) cells.push('');
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}
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for (; i < cells.length; i++) {
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// leading or trailing whitespace is ignored per the gfm spec
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cells[i] = cells[i].trim().replace(/\\\|/g, '|');
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}
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return cells;
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}
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/**
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* Remove trailing 'c's. Equivalent to str.replace(/c*$/, '').
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* /c*$/ is vulnerable to REDOS.
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*
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* @param {string} str
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* @param {string} c
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* @param {boolean} invert Remove suffix of non-c chars instead. Default falsey.
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*/
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function rtrim(str, c, invert) {
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const l = str.length;
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if (l === 0) {
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return '';
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}
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// Length of suffix matching the invert condition.
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let suffLen = 0;
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// Step left until we fail to match the invert condition.
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while (suffLen < l) {
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const currChar = str.charAt(l - suffLen - 1);
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if (currChar === c && !invert) {
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suffLen++;
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} else if (currChar !== c && invert) {
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suffLen++;
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} else {
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break;
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}
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}
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return str.slice(0, l - suffLen);
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}
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function findClosingBracket(str, b) {
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if (str.indexOf(b[1]) === -1) {
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return -1;
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}
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const l = str.length;
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let level = 0,
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i = 0;
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for (; i < l; i++) {
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if (str[i] === '\\') {
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i++;
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} else if (str[i] === b[0]) {
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level++;
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} else if (str[i] === b[1]) {
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level--;
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if (level < 0) {
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return i;
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}
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}
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}
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return -1;
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}
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function checkSanitizeDeprecation(opt) {
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if (opt && opt.sanitize && !opt.silent) {
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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');
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}
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}
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// copied from https://stackoverflow.com/a/5450113/806777
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/**
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* @param {string} pattern
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* @param {number} count
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*/
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function repeatString(pattern, count) {
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if (count < 1) {
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return '';
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}
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let result = '';
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while (count > 1) {
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if (count & 1) {
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result += pattern;
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}
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count >>= 1;
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pattern += pattern;
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}
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return result + pattern;
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}
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function outputLink(cap, link, raw, lexer) {
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const href = link.href;
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const title = link.title ? escape(link.title) : null;
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const text = cap[1].replace(/\\([\[\]])/g, '$1');
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if (cap[0].charAt(0) !== '!') {
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lexer.state.inLink = true;
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const token = {
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type: 'link',
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raw,
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href,
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title,
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text,
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tokens: lexer.inlineTokens(text)
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};
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lexer.state.inLink = false;
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return token;
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}
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return {
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type: 'image',
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raw,
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href,
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title,
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text: escape(text)
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};
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}
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function indentCodeCompensation(raw, text) {
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const matchIndentToCode = raw.match(/^(\s+)(?:```)/);
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if (matchIndentToCode === null) {
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return text;
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}
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const indentToCode = matchIndentToCode[1];
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return text
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.split('\n')
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.map(node => {
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const matchIndentInNode = node.match(/^\s+/);
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if (matchIndentInNode === null) {
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return node;
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}
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const [indentInNode] = matchIndentInNode;
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if (indentInNode.length >= indentToCode.length) {
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return node.slice(indentToCode.length);
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}
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return node;
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})
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.join('\n');
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}
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/**
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* Tokenizer
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*/
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class Tokenizer {
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constructor(options) {
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this.options = options || defaults;
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}
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space(src) {
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const cap = this.rules.block.newline.exec(src);
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if (cap && cap[0].length > 0) {
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return {
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type: 'space',
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raw: cap[0]
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};
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}
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}
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code(src) {
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const cap = this.rules.block.code.exec(src);
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if (cap) {
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const text = cap[0].replace(/^ {1,4}/gm, '');
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return {
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type: 'code',
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raw: cap[0],
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codeBlockStyle: 'indented',
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text: !this.options.pedantic
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? rtrim(text, '\n')
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: text
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};
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}
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}
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fences(src) {
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const cap = this.rules.block.fences.exec(src);
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if (cap) {
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const raw = cap[0];
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const text = indentCodeCompensation(raw, cap[3] || '');
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return {
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type: 'code',
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raw,
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lang: cap[2] ? cap[2].trim() : cap[2],
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text
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};
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}
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}
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heading(src) {
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const cap = this.rules.block.heading.exec(src);
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if (cap) {
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let text = cap[2].trim();
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|
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// remove trailing #s
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if (/#$/.test(text)) {
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const trimmed = rtrim(text, '#');
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if (this.options.pedantic) {
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text = trimmed.trim();
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} else if (!trimmed || / $/.test(trimmed)) {
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// CommonMark requires space before trailing #s
|
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text = trimmed.trim();
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}
|
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}
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|
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return {
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type: 'heading',
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raw: cap[0],
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depth: cap[1].length,
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text,
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tokens: this.lexer.inline(text)
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};
|
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}
|
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}
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|
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hr(src) {
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const cap = this.rules.block.hr.exec(src);
|
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if (cap) {
|
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return {
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type: 'hr',
|
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raw: cap[0]
|
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};
|
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}
|
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}
|
|
|
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blockquote(src) {
|
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const cap = this.rules.block.blockquote.exec(src);
|
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if (cap) {
|
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const text = cap[0].replace(/^ *>[ \t]?/gm, '');
|
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|
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return {
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type: 'blockquote',
|
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raw: cap[0],
|
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tokens: this.lexer.blockTokens(text, []),
|
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text
|
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};
|
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}
|
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}
|
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|
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list(src) {
|
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let cap = this.rules.block.list.exec(src);
|
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if (cap) {
|
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let raw, istask, ischecked, indent, i, blankLine, endsWithBlankLine,
|
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line, nextLine, rawLine, itemContents, endEarly;
|
|
|
|
let bull = cap[1].trim();
|
|
const isordered = bull.length > 1;
|
|
|
|
const list = {
|
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type: 'list',
|
|
raw: '',
|
|
ordered: isordered,
|
|
start: isordered ? +bull.slice(0, -1) : '',
|
|
loose: false,
|
|
items: []
|
|
};
|
|
|
|
bull = isordered ? `\\d{1,9}\\${bull.slice(-1)}` : `\\${bull}`;
|
|
|
|
if (this.options.pedantic) {
|
|
bull = isordered ? bull : '[*+-]';
|
|
}
|
|
|
|
// Get next list item
|
|
const itemRegex = new RegExp(`^( {0,3}${bull})((?:[\t ][^\\n]*)?(?:\\n|$))`);
|
|
|
|
// Check if current bullet point can start a new List Item
|
|
while (src) {
|
|
endEarly = false;
|
|
if (!(cap = itemRegex.exec(src))) {
|
|
break;
|
|
}
|
|
|
|
if (this.rules.block.hr.test(src)) { // End list if bullet was actually HR (possibly move into itemRegex?)
|
|
break;
|
|
}
|
|
|
|
raw = cap[0];
|
|
src = src.substring(raw.length);
|
|
|
|
line = cap[2].split('\n', 1)[0];
|
|
nextLine = src.split('\n', 1)[0];
|
|
|
|
if (this.options.pedantic) {
|
|
indent = 2;
|
|
itemContents = line.trimLeft();
|
|
} else {
|
|
indent = cap[2].search(/[^ ]/); // Find first non-space char
|
|
indent = indent > 4 ? 1 : indent; // Treat indented code blocks (> 4 spaces) as having only 1 indent
|
|
itemContents = line.slice(indent);
|
|
indent += cap[1].length;
|
|
}
|
|
|
|
blankLine = false;
|
|
|
|
if (!line && /^ *$/.test(nextLine)) { // Items begin with at most one blank line
|
|
raw += nextLine + '\n';
|
|
src = src.substring(nextLine.length + 1);
|
|
endEarly = true;
|
|
}
|
|
|
|
if (!endEarly) {
|
|
const nextBulletRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}(?:[*+-]|\\d{1,9}[.)])((?: [^\\n]*)?(?:\\n|$))`);
|
|
const hrRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}((?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$)`);
|
|
const fencesBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}(?:\`\`\`|~~~)`);
|
|
const headingBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}#`);
|
|
|
|
// Check if following lines should be included in List Item
|
|
while (src) {
|
|
rawLine = src.split('\n', 1)[0];
|
|
line = rawLine;
|
|
|
|
// Re-align to follow commonmark nesting rules
|
|
if (this.options.pedantic) {
|
|
line = line.replace(/^ {1,4}(?=( {4})*[^ ])/g, ' ');
|
|
}
|
|
|
|
// End list item if found code fences
|
|
if (fencesBeginRegex.test(line)) {
|
|
break;
|
|
}
|
|
|
|
// End list item if found start of new heading
|
|
if (headingBeginRegex.test(line)) {
|
|
break;
|
|
}
|
|
|
|
// End list item if found start of new bullet
|
|
if (nextBulletRegex.test(line)) {
|
|
break;
|
|
}
|
|
|
|
// Horizontal rule found
|
|
if (hrRegex.test(src)) {
|
|
break;
|
|
}
|
|
|
|
if (line.search(/[^ ]/) >= indent || !line.trim()) { // Dedent if possible
|
|
itemContents += '\n' + line.slice(indent);
|
|
} else if (!blankLine) { // Until blank line, item doesn't need indentation
|
|
itemContents += '\n' + line;
|
|
} else { // Otherwise, improper indentation ends this item
|
|
break;
|
|
}
|
|
|
|
if (!blankLine && !line.trim()) { // Check if current line is blank
|
|
blankLine = true;
|
|
}
|
|
|
|
raw += rawLine + '\n';
|
|
src = src.substring(rawLine.length + 1);
|
|
}
|
|
}
|
|
|
|
if (!list.loose) {
|
|
// If the previous item ended with a blank line, the list is loose
|
|
if (endsWithBlankLine) {
|
|
list.loose = true;
|
|
} else if (/\n *\n *$/.test(raw)) {
|
|
endsWithBlankLine = true;
|
|
}
|
|
}
|
|
|
|
// Check for task list items
|
|
if (this.options.gfm) {
|
|
istask = /^\[[ xX]\] /.exec(itemContents);
|
|
if (istask) {
|
|
ischecked = istask[0] !== '[ ] ';
|
|
itemContents = itemContents.replace(/^\[[ xX]\] +/, '');
|
|
}
|
|
}
|
|
|
|
list.items.push({
|
|
type: 'list_item',
|
|
raw,
|
|
task: !!istask,
|
|
checked: ischecked,
|
|
loose: false,
|
|
text: itemContents
|
|
});
|
|
|
|
list.raw += raw;
|
|
}
|
|
|
|
// Do not consume newlines at end of final item. Alternatively, make itemRegex *start* with any newlines to simplify/speed up endsWithBlankLine logic
|
|
list.items[list.items.length - 1].raw = raw.trimRight();
|
|
list.items[list.items.length - 1].text = itemContents.trimRight();
|
|
list.raw = list.raw.trimRight();
|
|
|
|
const l = list.items.length;
|
|
|
|
// Item child tokens handled here at end because we needed to have the final item to trim it first
|
|
for (i = 0; i < l; i++) {
|
|
this.lexer.state.top = false;
|
|
list.items[i].tokens = this.lexer.blockTokens(list.items[i].text, []);
|
|
const spacers = list.items[i].tokens.filter(t => t.type === 'space');
|
|
const hasMultipleLineBreaks = spacers.every(t => {
|
|
const chars = t.raw.split('');
|
|
let lineBreaks = 0;
|
|
for (const char of chars) {
|
|
if (char === '\n') {
|
|
lineBreaks += 1;
|
|
}
|
|
if (lineBreaks > 1) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
});
|
|
|
|
if (!list.loose && spacers.length && hasMultipleLineBreaks) {
|
|
// Having a single line break doesn't mean a list is loose. A single line break is terminating the last list item
|
|
list.loose = true;
|
|
list.items[i].loose = true;
|
|
}
|
|
}
|
|
|
|
return list;
|
|
}
|
|
}
|
|
|
|
html(src) {
|
|
const cap = this.rules.block.html.exec(src);
|
|
if (cap) {
|
|
const token = {
|
|
type: 'html',
|
|
raw: cap[0],
|
|
pre: !this.options.sanitizer
|
|
&& (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
|
|
text: cap[0]
|
|
};
|
|
if (this.options.sanitize) {
|
|
const text = this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]);
|
|
token.type = 'paragraph';
|
|
token.text = text;
|
|
token.tokens = this.lexer.inline(text);
|
|
}
|
|
return token;
|
|
}
|
|
}
|
|
|
|
def(src) {
|
|
const cap = this.rules.block.def.exec(src);
|
|
if (cap) {
|
|
if (cap[3]) cap[3] = cap[3].substring(1, cap[3].length - 1);
|
|
const tag = cap[1].toLowerCase().replace(/\s+/g, ' ');
|
|
return {
|
|
type: 'def',
|
|
tag,
|
|
raw: cap[0],
|
|
href: cap[2],
|
|
title: cap[3]
|
|
};
|
|
}
|
|
}
|
|
|
|
table(src) {
|
|
const cap = this.rules.block.table.exec(src);
|
|
if (cap) {
|
|
const item = {
|
|
type: 'table',
|
|
header: splitCells(cap[1]).map(c => { return { text: c }; }),
|
|
align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
|
|
rows: cap[3] && cap[3].trim() ? cap[3].replace(/\n[ \t]*$/, '').split('\n') : []
|
|
};
|
|
|
|
if (item.header.length === item.align.length) {
|
|
item.raw = cap[0];
|
|
|
|
let l = item.align.length;
|
|
let i, j, k, row;
|
|
for (i = 0; i < l; 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;
|
|
}
|
|
}
|
|
|
|
l = item.rows.length;
|
|
for (i = 0; i < l; i++) {
|
|
item.rows[i] = splitCells(item.rows[i], item.header.length).map(c => { return { text: c }; });
|
|
}
|
|
|
|
// parse child tokens inside headers and cells
|
|
|
|
// header child tokens
|
|
l = item.header.length;
|
|
for (j = 0; j < l; j++) {
|
|
item.header[j].tokens = this.lexer.inline(item.header[j].text);
|
|
}
|
|
|
|
// cell child tokens
|
|
l = item.rows.length;
|
|
for (j = 0; j < l; j++) {
|
|
row = item.rows[j];
|
|
for (k = 0; k < row.length; k++) {
|
|
row[k].tokens = this.lexer.inline(row[k].text);
|
|
}
|
|
}
|
|
|
|
return item;
|
|
}
|
|
}
|
|
}
|
|
|
|
lheading(src) {
|
|
const cap = this.rules.block.lheading.exec(src);
|
|
if (cap) {
|
|
return {
|
|
type: 'heading',
|
|
raw: cap[0],
|
|
depth: cap[2].charAt(0) === '=' ? 1 : 2,
|
|
text: cap[1],
|
|
tokens: this.lexer.inline(cap[1])
|
|
};
|
|
}
|
|
}
|
|
|
|
paragraph(src) {
|
|
const cap = this.rules.block.paragraph.exec(src);
|
|
if (cap) {
|
|
const text = cap[1].charAt(cap[1].length - 1) === '\n'
|
|
? cap[1].slice(0, -1)
|
|
: cap[1];
|
|
return {
|
|
type: 'paragraph',
|
|
raw: cap[0],
|
|
text,
|
|
tokens: this.lexer.inline(text)
|
|
};
|
|
}
|
|
}
|
|
|
|
text(src) {
|
|
const cap = this.rules.block.text.exec(src);
|
|
if (cap) {
|
|
return {
|
|
type: 'text',
|
|
raw: cap[0],
|
|
text: cap[0],
|
|
tokens: this.lexer.inline(cap[0])
|
|
};
|
|
}
|
|
}
|
|
|
|
escape(src) {
|
|
const cap = this.rules.inline.escape.exec(src);
|
|
if (cap) {
|
|
return {
|
|
type: 'escape',
|
|
raw: cap[0],
|
|
text: escape(cap[1])
|
|
};
|
|
}
|
|
}
|
|
|
|
tag(src) {
|
|
const cap = this.rules.inline.tag.exec(src);
|
|
if (cap) {
|
|
if (!this.lexer.state.inLink && /^<a /i.test(cap[0])) {
|
|
this.lexer.state.inLink = true;
|
|
} else if (this.lexer.state.inLink && /^<\/a>/i.test(cap[0])) {
|
|
this.lexer.state.inLink = false;
|
|
}
|
|
if (!this.lexer.state.inRawBlock && /^<(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
|
|
this.lexer.state.inRawBlock = true;
|
|
} else if (this.lexer.state.inRawBlock && /^<\/(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
|
|
this.lexer.state.inRawBlock = false;
|
|
}
|
|
|
|
return {
|
|
type: this.options.sanitize
|
|
? 'text'
|
|
: 'html',
|
|
raw: cap[0],
|
|
inLink: this.lexer.state.inLink,
|
|
inRawBlock: this.lexer.state.inRawBlock,
|
|
text: this.options.sanitize
|
|
? (this.options.sanitizer
|
|
? this.options.sanitizer(cap[0])
|
|
: escape(cap[0]))
|
|
: cap[0]
|
|
};
|
|
}
|
|
}
|
|
|
|
link(src) {
|
|
const cap = this.rules.inline.link.exec(src);
|
|
if (cap) {
|
|
const trimmedUrl = cap[2].trim();
|
|
if (!this.options.pedantic && /^</.test(trimmedUrl)) {
|
|
// commonmark requires matching angle brackets
|
|
if (!(/>$/.test(trimmedUrl))) {
|
|
return;
|
|
}
|
|
|
|
// ending angle bracket cannot be escaped
|
|
const rtrimSlash = rtrim(trimmedUrl.slice(0, -1), '\\');
|
|
if ((trimmedUrl.length - rtrimSlash.length) % 2 === 0) {
|
|
return;
|
|
}
|
|
} else {
|
|
// find closing parenthesis
|
|
const lastParenIndex = findClosingBracket(cap[2], '()');
|
|
if (lastParenIndex > -1) {
|
|
const start = cap[0].indexOf('!') === 0 ? 5 : 4;
|
|
const linkLen = start + cap[1].length + lastParenIndex;
|
|
cap[2] = cap[2].substring(0, lastParenIndex);
|
|
cap[0] = cap[0].substring(0, linkLen).trim();
|
|
cap[3] = '';
|
|
}
|
|
}
|
|
let href = cap[2];
|
|
let title = '';
|
|
if (this.options.pedantic) {
|
|
// split pedantic href and title
|
|
const link = /^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(href);
|
|
|
|
if (link) {
|
|
href = link[1];
|
|
title = link[3];
|
|
}
|
|
} else {
|
|
title = cap[3] ? cap[3].slice(1, -1) : '';
|
|
}
|
|
|
|
href = href.trim();
|
|
if (/^</.test(href)) {
|
|
if (this.options.pedantic && !(/>$/.test(trimmedUrl))) {
|
|
// pedantic allows starting angle bracket without ending angle bracket
|
|
href = href.slice(1);
|
|
} else {
|
|
href = href.slice(1, -1);
|
|
}
|
|
}
|
|
return outputLink(cap, {
|
|
href: href ? href.replace(this.rules.inline._escapes, '$1') : href,
|
|
title: title ? title.replace(this.rules.inline._escapes, '$1') : title
|
|
}, cap[0], this.lexer);
|
|
}
|
|
}
|
|
|
|
reflink(src, links) {
|
|
let cap;
|
|
if ((cap = this.rules.inline.reflink.exec(src))
|
|
|| (cap = this.rules.inline.nolink.exec(src))) {
|
|
let link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
|
|
link = links[link.toLowerCase()];
|
|
if (!link || !link.href) {
|
|
const text = cap[0].charAt(0);
|
|
return {
|
|
type: 'text',
|
|
raw: text,
|
|
text
|
|
};
|
|
}
|
|
return outputLink(cap, link, cap[0], this.lexer);
|
|
}
|
|
}
|
|
|
|
emStrong(src, maskedSrc, prevChar = '') {
|
|
let match = this.rules.inline.emStrong.lDelim.exec(src);
|
|
if (!match) return;
|
|
|
|
// _ can't be between two alphanumerics. \p{L}\p{N} includes non-english alphabet/numbers as well
|
|
if (match[3] && prevChar.match(/[\p{L}\p{N}]/u)) return;
|
|
|
|
const nextChar = match[1] || match[2] || '';
|
|
|
|
if (!nextChar || (nextChar && (prevChar === '' || this.rules.inline.punctuation.exec(prevChar)))) {
|
|
const lLength = match[0].length - 1;
|
|
let rDelim, rLength, delimTotal = lLength, midDelimTotal = 0;
|
|
|
|
const endReg = match[0][0] === '*' ? this.rules.inline.emStrong.rDelimAst : this.rules.inline.emStrong.rDelimUnd;
|
|
endReg.lastIndex = 0;
|
|
|
|
// Clip maskedSrc to same section of string as src (move to lexer?)
|
|
maskedSrc = maskedSrc.slice(-1 * src.length + lLength);
|
|
|
|
while ((match = endReg.exec(maskedSrc)) != null) {
|
|
rDelim = match[1] || match[2] || match[3] || match[4] || match[5] || match[6];
|
|
|
|
if (!rDelim) continue; // skip single * in __abc*abc__
|
|
|
|
rLength = rDelim.length;
|
|
|
|
if (match[3] || match[4]) { // found another Left Delim
|
|
delimTotal += rLength;
|
|
continue;
|
|
} else if (match[5] || match[6]) { // either Left or Right Delim
|
|
if (lLength % 3 && !((lLength + rLength) % 3)) {
|
|
midDelimTotal += rLength;
|
|
continue; // CommonMark Emphasis Rules 9-10
|
|
}
|
|
}
|
|
|
|
delimTotal -= rLength;
|
|
|
|
if (delimTotal > 0) continue; // Haven't found enough closing delimiters
|
|
|
|
// Remove extra characters. *a*** -> *a*
|
|
rLength = Math.min(rLength, rLength + delimTotal + midDelimTotal);
|
|
|
|
// Create `em` if smallest delimiter has odd char count. *a***
|
|
if (Math.min(lLength, rLength) % 2) {
|
|
const text = src.slice(1, lLength + match.index + rLength);
|
|
return {
|
|
type: 'em',
|
|
raw: src.slice(0, lLength + match.index + rLength + 1),
|
|
text,
|
|
tokens: this.lexer.inlineTokens(text)
|
|
};
|
|
}
|
|
|
|
// Create 'strong' if smallest delimiter has even char count. **a***
|
|
const text = src.slice(2, lLength + match.index + rLength - 1);
|
|
return {
|
|
type: 'strong',
|
|
raw: src.slice(0, lLength + match.index + rLength + 1),
|
|
text,
|
|
tokens: this.lexer.inlineTokens(text)
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
codespan(src) {
|
|
const cap = this.rules.inline.code.exec(src);
|
|
if (cap) {
|
|
let text = cap[2].replace(/\n/g, ' ');
|
|
const hasNonSpaceChars = /[^ ]/.test(text);
|
|
const hasSpaceCharsOnBothEnds = /^ /.test(text) && / $/.test(text);
|
|
if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {
|
|
text = text.substring(1, text.length - 1);
|
|
}
|
|
text = escape(text, true);
|
|
return {
|
|
type: 'codespan',
|
|
raw: cap[0],
|
|
text
|
|
};
|
|
}
|
|
}
|
|
|
|
br(src) {
|
|
const cap = this.rules.inline.br.exec(src);
|
|
if (cap) {
|
|
return {
|
|
type: 'br',
|
|
raw: cap[0]
|
|
};
|
|
}
|
|
}
|
|
|
|
del(src) {
|
|
const cap = this.rules.inline.del.exec(src);
|
|
if (cap) {
|
|
return {
|
|
type: 'del',
|
|
raw: cap[0],
|
|
text: cap[2],
|
|
tokens: this.lexer.inlineTokens(cap[2])
|
|
};
|
|
}
|
|
}
|
|
|
|
autolink(src, mangle) {
|
|
const cap = this.rules.inline.autolink.exec(src);
|
|
if (cap) {
|
|
let text, href;
|
|
if (cap[2] === '@') {
|
|
text = escape(this.options.mangle ? mangle(cap[1]) : cap[1]);
|
|
href = 'mailto:' + text;
|
|
} else {
|
|
text = escape(cap[1]);
|
|
href = text;
|
|
}
|
|
|
|
return {
|
|
type: 'link',
|
|
raw: cap[0],
|
|
text,
|
|
href,
|
|
tokens: [
|
|
{
|
|
type: 'text',
|
|
raw: text,
|
|
text
|
|
}
|
|
]
|
|
};
|
|
}
|
|
}
|
|
|
|
url(src, mangle) {
|
|
let cap;
|
|
if (cap = this.rules.inline.url.exec(src)) {
|
|
let text, href;
|
|
if (cap[2] === '@') {
|
|
text = escape(this.options.mangle ? mangle(cap[0]) : cap[0]);
|
|
href = 'mailto:' + text;
|
|
} else {
|
|
// do extended autolink path validation
|
|
let prevCapZero;
|
|
do {
|
|
prevCapZero = cap[0];
|
|
cap[0] = this.rules.inline._backpedal.exec(cap[0])[0];
|
|
} while (prevCapZero !== cap[0]);
|
|
text = escape(cap[0]);
|
|
if (cap[1] === 'www.') {
|
|
href = 'http://' + text;
|
|
} else {
|
|
href = text;
|
|
}
|
|
}
|
|
return {
|
|
type: 'link',
|
|
raw: cap[0],
|
|
text,
|
|
href,
|
|
tokens: [
|
|
{
|
|
type: 'text',
|
|
raw: text,
|
|
text
|
|
}
|
|
]
|
|
};
|
|
}
|
|
}
|
|
|
|
inlineText(src, smartypants) {
|
|
const cap = this.rules.inline.text.exec(src);
|
|
if (cap) {
|
|
let text;
|
|
if (this.lexer.state.inRawBlock) {
|
|
text = this.options.sanitize ? (this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0])) : cap[0];
|
|
} else {
|
|
text = escape(this.options.smartypants ? smartypants(cap[0]) : cap[0]);
|
|
}
|
|
return {
|
|
type: 'text',
|
|
raw: cap[0],
|
|
text
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Block-Level Grammar
|
|
*/
|
|
const block = {
|
|
newline: /^(?: *(?:\n|$))+/,
|
|
code: /^( {4}[^\n]+(?:\n(?: *(?:\n|$))*)?)+/,
|
|
fences: /^ {0,3}(`{3,}(?=[^`\n]*\n)|~{3,})([^\n]*)\n(?:|([\s\S]*?)\n)(?: {0,3}\1[~`]* *(?=\n|$)|$)/,
|
|
hr: /^ {0,3}((?:-[\t ]*){3,}|(?:_[ \t]*){3,}|(?:\*[ \t]*){3,})(?:\n+|$)/,
|
|
heading: /^ {0,3}(#{1,6})(?=\s|$)(.*)(?:\n+|$)/,
|
|
blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/,
|
|
list: /^( {0,3}bull)([ \t][^\n]+?)?(?:\n|$)/,
|
|
html: '^ {0,3}(?:' // optional indentation
|
|
+ '<(script|pre|style|textarea)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)' // (1)
|
|
+ '|comment[^\\n]*(\\n+|$)' // (2)
|
|
+ '|<\\?[\\s\\S]*?(?:\\?>\\n*|$)' // (3)
|
|
+ '|<![A-Z][\\s\\S]*?(?:>\\n*|$)' // (4)
|
|
+ '|<!\\[CDATA\\[[\\s\\S]*?(?:\\]\\]>\\n*|$)' // (5)
|
|
+ '|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (6)
|
|
+ '|<(?!script|pre|style|textarea)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (7) open tag
|
|
+ '|</(?!script|pre|style|textarea)[a-z][\\w-]*\\s*>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (7) closing tag
|
|
+ ')',
|
|
def: /^ {0,3}\[(label)\]: *(?:\n *)?<?([^\s>]+)>?(?:(?: +(?:\n *)?| *\n *)(title))? *(?:\n+|$)/,
|
|
table: noopTest,
|
|
lheading: /^([^\n]+)\n {0,3}(=+|-+) *(?:\n+|$)/,
|
|
// 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|table| +\n)[^\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.listItemStart = edit(/^( *)(bull) */)
|
|
.replace('bull', block.bullet)
|
|
.getRegex();
|
|
|
|
block.list = edit(block.list)
|
|
.replace(/bull/g, block.bullet)
|
|
.replace('hr', '\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))')
|
|
.replace('def', '\\n+(?=' + block.def.source + ')')
|
|
.getRegex();
|
|
|
|
block._tag = 'address|article|aside|base|basefont|blockquote|body|caption'
|
|
+ '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption'
|
|
+ '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe'
|
|
+ '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option'
|
|
+ '|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr'
|
|
+ '|track|ul';
|
|
block._comment = /<!--(?!-?>)[\s\S]*?(?:-->|$)/;
|
|
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('|table', '')
|
|
.replace('blockquote', ' {0,3}>')
|
|
.replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
|
|
.replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
|
|
.replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|textarea|!--)')
|
|
.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, {
|
|
table: '^ *([^\\n ].*\\|.*)\\n' // Header
|
|
+ ' {0,3}(?:\\| *)?(:?-+:? *(?:\\| *:?-+:? *)*)(?:\\| *)?' // Align
|
|
+ '(?:\\n((?:(?! *\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)' // Cells
|
|
});
|
|
|
|
block.gfm.table = edit(block.gfm.table)
|
|
.replace('hr', block.hr)
|
|
.replace('heading', ' {0,3}#{1,6} ')
|
|
.replace('blockquote', ' {0,3}>')
|
|
.replace('code', ' {4}[^\\n]')
|
|
.replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
|
|
.replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
|
|
.replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|textarea|!--)')
|
|
.replace('tag', block._tag) // tables can be interrupted by type (6) html blocks
|
|
.getRegex();
|
|
|
|
block.gfm.paragraph = edit(block._paragraph)
|
|
.replace('hr', block.hr)
|
|
.replace('heading', ' {0,3}#{1,6} ')
|
|
.replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs
|
|
.replace('table', block.gfm.table) // interrupt paragraphs with table
|
|
.replace('blockquote', ' {0,3}>')
|
|
.replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
|
|
.replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
|
|
.replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|textarea|!--)')
|
|
.replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
|
|
.getRegex();
|
|
/**
|
|
* Pedantic grammar (original John Gruber's loose markdown specification)
|
|
*/
|
|
|
|
block.pedantic = merge({}, block.normal, {
|
|
html: edit(
|
|
'^ *(?:comment *(?:\\n|\\s*$)'
|
|
+ '|<(tag)[\\s\\S]+?</\\1> *(?:\\n{2,}|\\s*$)' // closed tag
|
|
+ '|<tag(?:"[^"]*"|\'[^\']*\'|\\s[^\'"/>\\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: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,
|
|
heading: /^(#{1,6})(.*)(?:\n+|$)/,
|
|
fences: noopTest, // 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()
|
|
});
|
|
|
|
/**
|
|
* Inline-Level Grammar
|
|
*/
|
|
const inline = {
|
|
escape: /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,
|
|
autolink: /^<(scheme:[^\s\x00-\x1f<>]*|email)>/,
|
|
url: noopTest,
|
|
tag: '^comment'
|
|
+ '|^</[a-zA-Z][\\w:-]*\\s*>' // self-closing tag
|
|
+ '|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>' // open tag
|
|
+ '|^<\\?[\\s\\S]*?\\?>' // processing instruction, e.g. <?php ?>
|
|
+ '|^<![a-zA-Z]+\\s[\\s\\S]*?>' // declaration, e.g. <!DOCTYPE html>
|
|
+ '|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>', // CDATA section
|
|
link: /^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,
|
|
reflink: /^!?\[(label)\]\[(ref)\]/,
|
|
nolink: /^!?\[(ref)\](?:\[\])?/,
|
|
reflinkSearch: 'reflink|nolink(?!\\()',
|
|
emStrong: {
|
|
lDelim: /^(?:\*+(?:([punct_])|[^\s*]))|^_+(?:([punct*])|([^\s_]))/,
|
|
// (1) and (2) can only be a Right Delimiter. (3) and (4) can only be Left. (5) and (6) can be either Left or Right.
|
|
// () Skip orphan inside strong () Consume to delim (1) #*** (2) a***#, a*** (3) #***a, ***a (4) ***# (5) #***# (6) a***a
|
|
rDelimAst: /^[^_*]*?\_\_[^_*]*?\*[^_*]*?(?=\_\_)|[^*]+(?=[^*])|[punct_](\*+)(?=[\s]|$)|[^punct*_\s](\*+)(?=[punct_\s]|$)|[punct_\s](\*+)(?=[^punct*_\s])|[\s](\*+)(?=[punct_])|[punct_](\*+)(?=[punct_])|[^punct*_\s](\*+)(?=[^punct*_\s])/,
|
|
rDelimUnd: /^[^_*]*?\*\*[^_*]*?\_[^_*]*?(?=\*\*)|[^_]+(?=[^_])|[punct*](\_+)(?=[\s]|$)|[^punct*_\s](\_+)(?=[punct*\s]|$)|[punct*\s](\_+)(?=[^punct*_\s])|[\s](\_+)(?=[punct*])|[punct*](\_+)(?=[punct*])/ // ^- Not allowed for _
|
|
},
|
|
code: /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,
|
|
br: /^( {2,}|\\)\n(?!\s*$)/,
|
|
del: noopTest,
|
|
text: /^(`+|[^`])(?:(?= {2,}\n)|[\s\S]*?(?:(?=[\\<!\[`*_]|\b_|$)|[^ ](?= {2,}\n)))/,
|
|
punctuation: /^([\spunctuation])/
|
|
};
|
|
|
|
// list of punctuation marks from CommonMark spec
|
|
// without * and _ to handle the different emphasis markers * and _
|
|
inline._punctuation = '!"#$%&\'()+\\-.,/:;<=>?@\\[\\]`^{|}~';
|
|
inline.punctuation = edit(inline.punctuation).replace(/punctuation/g, inline._punctuation).getRegex();
|
|
|
|
// sequences em should skip over [title](link), `code`, <html>
|
|
inline.blockSkip = /\[[^\]]*?\]\([^\)]*?\)|`[^`]*?`|<[^>]*?>/g;
|
|
inline.escapedEmSt = /\\\*|\\_/g;
|
|
|
|
inline._comment = edit(block._comment).replace('(?:-->|$)', '-->').getRegex();
|
|
|
|
inline.emStrong.lDelim = edit(inline.emStrong.lDelim)
|
|
.replace(/punct/g, inline._punctuation)
|
|
.getRegex();
|
|
|
|
inline.emStrong.rDelimAst = edit(inline.emStrong.rDelimAst, 'g')
|
|
.replace(/punct/g, inline._punctuation)
|
|
.getRegex();
|
|
|
|
inline.emStrong.rDelimUnd = edit(inline.emStrong.rDelimUnd, 'g')
|
|
.replace(/punct/g, inline._punctuation)
|
|
.getRegex();
|
|
|
|
inline._escapes = /\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/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', inline._comment)
|
|
.replace('attribute', inline._attribute)
|
|
.getRegex();
|
|
|
|
inline._label = /(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/;
|
|
inline._href = /<(?:\\.|[^\n<>\\])+>|[^\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)
|
|
.replace('ref', block._label)
|
|
.getRegex();
|
|
|
|
inline.nolink = edit(inline.nolink)
|
|
.replace('ref', block._label)
|
|
.getRegex();
|
|
|
|
inline.reflinkSearch = edit(inline.reflinkSearch, 'g')
|
|
.replace('reflink', inline.reflink)
|
|
.replace('nolink', inline.nolink)
|
|
.getRegex();
|
|
|
|
/**
|
|
* Normal Inline Grammar
|
|
*/
|
|
|
|
inline.normal = merge({}, inline);
|
|
|
|
/**
|
|
* Pedantic Inline Grammar
|
|
*/
|
|
|
|
inline.pedantic = merge({}, inline.normal, {
|
|
strong: {
|
|
start: /^__|\*\*/,
|
|
middle: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
|
|
endAst: /\*\*(?!\*)/g,
|
|
endUnd: /__(?!_)/g
|
|
},
|
|
em: {
|
|
start: /^_|\*/,
|
|
middle: /^()\*(?=\S)([\s\S]*?\S)\*(?!\*)|^_(?=\S)([\s\S]*?\S)_(?!_)/,
|
|
endAst: /\*(?!\*)/g,
|
|
endUnd: /_(?!_)/g
|
|
},
|
|
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~])\1(?=[^~]|$)/,
|
|
text: /^([`~]+|[^`~])(?:(?= {2,}\n)|(?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)|[\s\S]*?(?:(?=[\\<!\[`*~_]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)))/
|
|
});
|
|
|
|
inline.gfm.url = edit(inline.gfm.url, 'i')
|
|
.replace('email', inline.gfm._extended_email)
|
|
.getRegex();
|
|
/**
|
|
* GFM + Line Breaks Inline Grammar
|
|
*/
|
|
|
|
inline.breaks = merge({}, inline.gfm, {
|
|
br: edit(inline.br).replace('{2,}', '*').getRegex(),
|
|
text: edit(inline.gfm.text)
|
|
.replace('\\b_', '\\b_| {2,}\\n')
|
|
.replace(/\{2,\}/g, '*')
|
|
.getRegex()
|
|
});
|
|
|
|
/**
|
|
* smartypants text replacement
|
|
* @param {string} text
|
|
*/
|
|
function smartypants(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 email addresses
|
|
* @param {string} text
|
|
*/
|
|
function mangle(text) {
|
|
let out = '',
|
|
i,
|
|
ch;
|
|
|
|
const l = text.length;
|
|
for (i = 0; i < l; i++) {
|
|
ch = text.charCodeAt(i);
|
|
if (Math.random() > 0.5) {
|
|
ch = 'x' + ch.toString(16);
|
|
}
|
|
out += '&#' + ch + ';';
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
/**
|
|
* Block Lexer
|
|
*/
|
|
class Lexer {
|
|
constructor(options) {
|
|
this.tokens = [];
|
|
this.tokens.links = Object.create(null);
|
|
this.options = options || defaults;
|
|
this.options.tokenizer = this.options.tokenizer || new Tokenizer();
|
|
this.tokenizer = this.options.tokenizer;
|
|
this.tokenizer.options = this.options;
|
|
this.tokenizer.lexer = this;
|
|
this.inlineQueue = [];
|
|
this.state = {
|
|
inLink: false,
|
|
inRawBlock: false,
|
|
top: true
|
|
};
|
|
|
|
const rules = {
|
|
block: block.normal,
|
|
inline: inline.normal
|
|
};
|
|
|
|
if (this.options.pedantic) {
|
|
rules.block = block.pedantic;
|
|
rules.inline = inline.pedantic;
|
|
} else if (this.options.gfm) {
|
|
rules.block = block.gfm;
|
|
if (this.options.breaks) {
|
|
rules.inline = inline.breaks;
|
|
} else {
|
|
rules.inline = inline.gfm;
|
|
}
|
|
}
|
|
this.tokenizer.rules = rules;
|
|
}
|
|
|
|
/**
|
|
* Expose Rules
|
|
*/
|
|
static get rules() {
|
|
return {
|
|
block,
|
|
inline
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Static Lex Method
|
|
*/
|
|
static lex(src, options) {
|
|
const lexer = new Lexer(options);
|
|
return lexer.lex(src);
|
|
}
|
|
|
|
/**
|
|
* Static Lex Inline Method
|
|
*/
|
|
static lexInline(src, options) {
|
|
const lexer = new Lexer(options);
|
|
return lexer.inlineTokens(src);
|
|
}
|
|
|
|
/**
|
|
* Preprocessing
|
|
*/
|
|
lex(src) {
|
|
src = src
|
|
.replace(/\r\n|\r/g, '\n');
|
|
|
|
this.blockTokens(src, this.tokens);
|
|
|
|
let next;
|
|
while (next = this.inlineQueue.shift()) {
|
|
this.inlineTokens(next.src, next.tokens);
|
|
}
|
|
|
|
return this.tokens;
|
|
}
|
|
|
|
/**
|
|
* Lexing
|
|
*/
|
|
blockTokens(src, tokens = []) {
|
|
if (this.options.pedantic) {
|
|
src = src.replace(/\t/g, ' ').replace(/^ +$/gm, '');
|
|
} else {
|
|
src = src.replace(/^( *)(\t+)/gm, (_, leading, tabs) => {
|
|
return leading + ' '.repeat(tabs.length);
|
|
});
|
|
}
|
|
|
|
let token, lastToken, cutSrc, lastParagraphClipped;
|
|
|
|
while (src) {
|
|
if (this.options.extensions
|
|
&& this.options.extensions.block
|
|
&& this.options.extensions.block.some((extTokenizer) => {
|
|
if (token = extTokenizer.call({ lexer: this }, src, tokens)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
return true;
|
|
}
|
|
return false;
|
|
})) {
|
|
continue;
|
|
}
|
|
|
|
// newline
|
|
if (token = this.tokenizer.space(src)) {
|
|
src = src.substring(token.raw.length);
|
|
if (token.raw.length === 1 && tokens.length > 0) {
|
|
// if there's a single \n as a spacer, it's terminating the last line,
|
|
// so move it there so that we don't get unecessary paragraph tags
|
|
tokens[tokens.length - 1].raw += '\n';
|
|
} else {
|
|
tokens.push(token);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// code
|
|
if (token = this.tokenizer.code(src)) {
|
|
src = src.substring(token.raw.length);
|
|
lastToken = tokens[tokens.length - 1];
|
|
// An indented code block cannot interrupt a paragraph.
|
|
if (lastToken && (lastToken.type === 'paragraph' || lastToken.type === 'text')) {
|
|
lastToken.raw += '\n' + token.raw;
|
|
lastToken.text += '\n' + token.text;
|
|
this.inlineQueue[this.inlineQueue.length - 1].src = lastToken.text;
|
|
} else {
|
|
tokens.push(token);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// fences
|
|
if (token = this.tokenizer.fences(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// heading
|
|
if (token = this.tokenizer.heading(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// hr
|
|
if (token = this.tokenizer.hr(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// blockquote
|
|
if (token = this.tokenizer.blockquote(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// list
|
|
if (token = this.tokenizer.list(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// html
|
|
if (token = this.tokenizer.html(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// def
|
|
if (token = this.tokenizer.def(src)) {
|
|
src = src.substring(token.raw.length);
|
|
lastToken = tokens[tokens.length - 1];
|
|
if (lastToken && (lastToken.type === 'paragraph' || lastToken.type === 'text')) {
|
|
lastToken.raw += '\n' + token.raw;
|
|
lastToken.text += '\n' + token.raw;
|
|
this.inlineQueue[this.inlineQueue.length - 1].src = lastToken.text;
|
|
} else if (!this.tokens.links[token.tag]) {
|
|
this.tokens.links[token.tag] = {
|
|
href: token.href,
|
|
title: token.title
|
|
};
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// table (gfm)
|
|
if (token = this.tokenizer.table(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// lheading
|
|
if (token = this.tokenizer.lheading(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// top-level paragraph
|
|
// prevent paragraph consuming extensions by clipping 'src' to extension start
|
|
cutSrc = src;
|
|
if (this.options.extensions && this.options.extensions.startBlock) {
|
|
let startIndex = Infinity;
|
|
const tempSrc = src.slice(1);
|
|
let tempStart;
|
|
this.options.extensions.startBlock.forEach(function(getStartIndex) {
|
|
tempStart = getStartIndex.call({ lexer: this }, tempSrc);
|
|
if (typeof tempStart === 'number' && tempStart >= 0) { startIndex = Math.min(startIndex, tempStart); }
|
|
});
|
|
if (startIndex < Infinity && startIndex >= 0) {
|
|
cutSrc = src.substring(0, startIndex + 1);
|
|
}
|
|
}
|
|
if (this.state.top && (token = this.tokenizer.paragraph(cutSrc))) {
|
|
lastToken = tokens[tokens.length - 1];
|
|
if (lastParagraphClipped && lastToken.type === 'paragraph') {
|
|
lastToken.raw += '\n' + token.raw;
|
|
lastToken.text += '\n' + token.text;
|
|
this.inlineQueue.pop();
|
|
this.inlineQueue[this.inlineQueue.length - 1].src = lastToken.text;
|
|
} else {
|
|
tokens.push(token);
|
|
}
|
|
lastParagraphClipped = (cutSrc.length !== src.length);
|
|
src = src.substring(token.raw.length);
|
|
continue;
|
|
}
|
|
|
|
// text
|
|
if (token = this.tokenizer.text(src)) {
|
|
src = src.substring(token.raw.length);
|
|
lastToken = tokens[tokens.length - 1];
|
|
if (lastToken && lastToken.type === 'text') {
|
|
lastToken.raw += '\n' + token.raw;
|
|
lastToken.text += '\n' + token.text;
|
|
this.inlineQueue.pop();
|
|
this.inlineQueue[this.inlineQueue.length - 1].src = lastToken.text;
|
|
} else {
|
|
tokens.push(token);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (src) {
|
|
const errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);
|
|
if (this.options.silent) {
|
|
console.error(errMsg);
|
|
break;
|
|
} else {
|
|
throw new Error(errMsg);
|
|
}
|
|
}
|
|
}
|
|
|
|
this.state.top = true;
|
|
return tokens;
|
|
}
|
|
|
|
inline(src, tokens = []) {
|
|
this.inlineQueue.push({ src, tokens });
|
|
return tokens;
|
|
}
|
|
|
|
/**
|
|
* Lexing/Compiling
|
|
*/
|
|
inlineTokens(src, tokens = []) {
|
|
let token, lastToken, cutSrc;
|
|
|
|
// String with links masked to avoid interference with em and strong
|
|
let maskedSrc = src;
|
|
let match;
|
|
let keepPrevChar, prevChar;
|
|
|
|
// Mask out reflinks
|
|
if (this.tokens.links) {
|
|
const links = Object.keys(this.tokens.links);
|
|
if (links.length > 0) {
|
|
while ((match = this.tokenizer.rules.inline.reflinkSearch.exec(maskedSrc)) != null) {
|
|
if (links.includes(match[0].slice(match[0].lastIndexOf('[') + 1, -1))) {
|
|
maskedSrc = maskedSrc.slice(0, match.index) + '[' + repeatString('a', match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Mask out other blocks
|
|
while ((match = this.tokenizer.rules.inline.blockSkip.exec(maskedSrc)) != null) {
|
|
maskedSrc = maskedSrc.slice(0, match.index) + '[' + repeatString('a', match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);
|
|
}
|
|
|
|
// Mask out escaped em & strong delimiters
|
|
while ((match = this.tokenizer.rules.inline.escapedEmSt.exec(maskedSrc)) != null) {
|
|
maskedSrc = maskedSrc.slice(0, match.index) + '++' + maskedSrc.slice(this.tokenizer.rules.inline.escapedEmSt.lastIndex);
|
|
}
|
|
|
|
while (src) {
|
|
if (!keepPrevChar) {
|
|
prevChar = '';
|
|
}
|
|
keepPrevChar = false;
|
|
|
|
// extensions
|
|
if (this.options.extensions
|
|
&& this.options.extensions.inline
|
|
&& this.options.extensions.inline.some((extTokenizer) => {
|
|
if (token = extTokenizer.call({ lexer: this }, src, tokens)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
return true;
|
|
}
|
|
return false;
|
|
})) {
|
|
continue;
|
|
}
|
|
|
|
// escape
|
|
if (token = this.tokenizer.escape(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// tag
|
|
if (token = this.tokenizer.tag(src)) {
|
|
src = src.substring(token.raw.length);
|
|
lastToken = tokens[tokens.length - 1];
|
|
if (lastToken && token.type === 'text' && lastToken.type === 'text') {
|
|
lastToken.raw += token.raw;
|
|
lastToken.text += token.text;
|
|
} else {
|
|
tokens.push(token);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// link
|
|
if (token = this.tokenizer.link(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// reflink, nolink
|
|
if (token = this.tokenizer.reflink(src, this.tokens.links)) {
|
|
src = src.substring(token.raw.length);
|
|
lastToken = tokens[tokens.length - 1];
|
|
if (lastToken && token.type === 'text' && lastToken.type === 'text') {
|
|
lastToken.raw += token.raw;
|
|
lastToken.text += token.text;
|
|
} else {
|
|
tokens.push(token);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// em & strong
|
|
if (token = this.tokenizer.emStrong(src, maskedSrc, prevChar)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// code
|
|
if (token = this.tokenizer.codespan(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// br
|
|
if (token = this.tokenizer.br(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// del (gfm)
|
|
if (token = this.tokenizer.del(src)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// autolink
|
|
if (token = this.tokenizer.autolink(src, mangle)) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// url (gfm)
|
|
if (!this.state.inLink && (token = this.tokenizer.url(src, mangle))) {
|
|
src = src.substring(token.raw.length);
|
|
tokens.push(token);
|
|
continue;
|
|
}
|
|
|
|
// text
|
|
// prevent inlineText consuming extensions by clipping 'src' to extension start
|
|
cutSrc = src;
|
|
if (this.options.extensions && this.options.extensions.startInline) {
|
|
let startIndex = Infinity;
|
|
const tempSrc = src.slice(1);
|
|
let tempStart;
|
|
this.options.extensions.startInline.forEach(function(getStartIndex) {
|
|
tempStart = getStartIndex.call({ lexer: this }, tempSrc);
|
|
if (typeof tempStart === 'number' && tempStart >= 0) { startIndex = Math.min(startIndex, tempStart); }
|
|
});
|
|
if (startIndex < Infinity && startIndex >= 0) {
|
|
cutSrc = src.substring(0, startIndex + 1);
|
|
}
|
|
}
|
|
if (token = this.tokenizer.inlineText(cutSrc, smartypants)) {
|
|
src = src.substring(token.raw.length);
|
|
if (token.raw.slice(-1) !== '_') { // Track prevChar before string of ____ started
|
|
prevChar = token.raw.slice(-1);
|
|
}
|
|
keepPrevChar = true;
|
|
lastToken = tokens[tokens.length - 1];
|
|
if (lastToken && lastToken.type === 'text') {
|
|
lastToken.raw += token.raw;
|
|
lastToken.text += token.text;
|
|
} else {
|
|
tokens.push(token);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (src) {
|
|
const errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);
|
|
if (this.options.silent) {
|
|
console.error(errMsg);
|
|
break;
|
|
} else {
|
|
throw new Error(errMsg);
|
|
}
|
|
}
|
|
}
|
|
|
|
return tokens;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Renderer
|
|
*/
|
|
class Renderer {
|
|
constructor(options) {
|
|
this.options = options || defaults;
|
|
}
|
|
|
|
code(code, infostring, escaped) {
|
|
const lang = (infostring || '').match(/\S*/)[0];
|
|
if (this.options.highlight) {
|
|
const out = this.options.highlight(code, lang);
|
|
if (out != null && out !== code) {
|
|
escaped = true;
|
|
code = out;
|
|
}
|
|
}
|
|
|
|
code = code.replace(/\n$/, '') + '\n';
|
|
|
|
if (!lang) {
|
|
return '<pre><code>'
|
|
+ (escaped ? code : escape(code, true))
|
|
+ '</code></pre>\n';
|
|
}
|
|
|
|
return '<pre><code class="'
|
|
+ this.options.langPrefix
|
|
+ escape(lang, true)
|
|
+ '">'
|
|
+ (escaped ? code : escape(code, true))
|
|
+ '</code></pre>\n';
|
|
}
|
|
|
|
/**
|
|
* @param {string} quote
|
|
*/
|
|
blockquote(quote) {
|
|
return `<blockquote>\n${quote}</blockquote>\n`;
|
|
}
|
|
|
|
html(html) {
|
|
return html;
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
* @param {string} level
|
|
* @param {string} raw
|
|
* @param {any} slugger
|
|
*/
|
|
heading(text, level, raw, slugger) {
|
|
if (this.options.headerIds) {
|
|
const id = this.options.headerPrefix + slugger.slug(raw);
|
|
return `<h${level} id="${id}">${text}</h${level}>\n`;
|
|
}
|
|
|
|
// ignore IDs
|
|
return `<h${level}>${text}</h${level}>\n`;
|
|
}
|
|
|
|
hr() {
|
|
return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
|
|
}
|
|
|
|
list(body, ordered, start) {
|
|
const type = ordered ? 'ol' : 'ul',
|
|
startatt = (ordered && start !== 1) ? (' start="' + start + '"') : '';
|
|
return '<' + type + startatt + '>\n' + body + '</' + type + '>\n';
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
*/
|
|
listitem(text) {
|
|
return `<li>${text}</li>\n`;
|
|
}
|
|
|
|
checkbox(checked) {
|
|
return '<input '
|
|
+ (checked ? 'checked="" ' : '')
|
|
+ 'disabled="" type="checkbox"'
|
|
+ (this.options.xhtml ? ' /' : '')
|
|
+ '> ';
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
*/
|
|
paragraph(text) {
|
|
return `<p>${text}</p>\n`;
|
|
}
|
|
|
|
/**
|
|
* @param {string} header
|
|
* @param {string} body
|
|
*/
|
|
table(header, body) {
|
|
if (body) body = `<tbody>${body}</tbody>`;
|
|
|
|
return '<table>\n'
|
|
+ '<thead>\n'
|
|
+ header
|
|
+ '</thead>\n'
|
|
+ body
|
|
+ '</table>\n';
|
|
}
|
|
|
|
/**
|
|
* @param {string} content
|
|
*/
|
|
tablerow(content) {
|
|
return `<tr>\n${content}</tr>\n`;
|
|
}
|
|
|
|
tablecell(content, flags) {
|
|
const type = flags.header ? 'th' : 'td';
|
|
const tag = flags.align
|
|
? `<${type} align="${flags.align}">`
|
|
: `<${type}>`;
|
|
return tag + content + `</${type}>\n`;
|
|
}
|
|
|
|
/**
|
|
* span level renderer
|
|
* @param {string} text
|
|
*/
|
|
strong(text) {
|
|
return `<strong>${text}</strong>`;
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
*/
|
|
em(text) {
|
|
return `<em>${text}</em>`;
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
*/
|
|
codespan(text) {
|
|
return `<code>${text}</code>`;
|
|
}
|
|
|
|
br() {
|
|
return this.options.xhtml ? '<br/>' : '<br>';
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
*/
|
|
del(text) {
|
|
return `<del>${text}</del>`;
|
|
}
|
|
|
|
/**
|
|
* @param {string} href
|
|
* @param {string} title
|
|
* @param {string} text
|
|
*/
|
|
link(href, title, text) {
|
|
href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);
|
|
if (href === null) {
|
|
return text;
|
|
}
|
|
let out = '<a href="' + escape(href) + '"';
|
|
if (title) {
|
|
out += ' title="' + title + '"';
|
|
}
|
|
out += '>' + text + '</a>';
|
|
return out;
|
|
}
|
|
|
|
/**
|
|
* @param {string} href
|
|
* @param {string} title
|
|
* @param {string} text
|
|
*/
|
|
image(href, title, text) {
|
|
href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);
|
|
if (href === null) {
|
|
return text;
|
|
}
|
|
|
|
let out = `<img src="${href}" alt="${text}"`;
|
|
if (title) {
|
|
out += ` title="${title}"`;
|
|
}
|
|
out += this.options.xhtml ? '/>' : '>';
|
|
return out;
|
|
}
|
|
|
|
text(text) {
|
|
return text;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* TextRenderer
|
|
* returns only the textual part of the token
|
|
*/
|
|
class TextRenderer {
|
|
// no need for block level renderers
|
|
strong(text) {
|
|
return text;
|
|
}
|
|
|
|
em(text) {
|
|
return text;
|
|
}
|
|
|
|
codespan(text) {
|
|
return text;
|
|
}
|
|
|
|
del(text) {
|
|
return text;
|
|
}
|
|
|
|
html(text) {
|
|
return text;
|
|
}
|
|
|
|
text(text) {
|
|
return text;
|
|
}
|
|
|
|
link(href, title, text) {
|
|
return '' + text;
|
|
}
|
|
|
|
image(href, title, text) {
|
|
return '' + text;
|
|
}
|
|
|
|
br() {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Slugger generates header id
|
|
*/
|
|
class Slugger {
|
|
constructor() {
|
|
this.seen = {};
|
|
}
|
|
|
|
/**
|
|
* @param {string} value
|
|
*/
|
|
serialize(value) {
|
|
return value
|
|
.toLowerCase()
|
|
.trim()
|
|
// remove html tags
|
|
.replace(/<[!\/a-z].*?>/ig, '')
|
|
// remove unwanted chars
|
|
.replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g, '')
|
|
.replace(/\s/g, '-');
|
|
}
|
|
|
|
/**
|
|
* Finds the next safe (unique) slug to use
|
|
* @param {string} originalSlug
|
|
* @param {boolean} isDryRun
|
|
*/
|
|
getNextSafeSlug(originalSlug, isDryRun) {
|
|
let slug = originalSlug;
|
|
let occurenceAccumulator = 0;
|
|
if (this.seen.hasOwnProperty(slug)) {
|
|
occurenceAccumulator = this.seen[originalSlug];
|
|
do {
|
|
occurenceAccumulator++;
|
|
slug = originalSlug + '-' + occurenceAccumulator;
|
|
} while (this.seen.hasOwnProperty(slug));
|
|
}
|
|
if (!isDryRun) {
|
|
this.seen[originalSlug] = occurenceAccumulator;
|
|
this.seen[slug] = 0;
|
|
}
|
|
return slug;
|
|
}
|
|
|
|
/**
|
|
* Convert string to unique id
|
|
* @param {object} [options]
|
|
* @param {boolean} [options.dryrun] Generates the next unique slug without
|
|
* updating the internal accumulator.
|
|
*/
|
|
slug(value, options = {}) {
|
|
const slug = this.serialize(value);
|
|
return this.getNextSafeSlug(slug, options.dryrun);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parsing & Compiling
|
|
*/
|
|
class Parser {
|
|
constructor(options) {
|
|
this.options = options || defaults;
|
|
this.options.renderer = this.options.renderer || new Renderer();
|
|
this.renderer = this.options.renderer;
|
|
this.renderer.options = this.options;
|
|
this.textRenderer = new TextRenderer();
|
|
this.slugger = new Slugger();
|
|
}
|
|
|
|
/**
|
|
* Static Parse Method
|
|
*/
|
|
static parse(tokens, options) {
|
|
const parser = new Parser(options);
|
|
return parser.parse(tokens);
|
|
}
|
|
|
|
/**
|
|
* Static Parse Inline Method
|
|
*/
|
|
static parseInline(tokens, options) {
|
|
const parser = new Parser(options);
|
|
return parser.parseInline(tokens);
|
|
}
|
|
|
|
/**
|
|
* Parse Loop
|
|
*/
|
|
parse(tokens, top = true) {
|
|
let out = '',
|
|
i,
|
|
j,
|
|
k,
|
|
l2,
|
|
l3,
|
|
row,
|
|
cell,
|
|
header,
|
|
body,
|
|
token,
|
|
ordered,
|
|
start,
|
|
loose,
|
|
itemBody,
|
|
item,
|
|
checked,
|
|
task,
|
|
checkbox,
|
|
ret;
|
|
|
|
const l = tokens.length;
|
|
for (i = 0; i < l; i++) {
|
|
token = tokens[i];
|
|
|
|
// Run any renderer extensions
|
|
if (this.options.extensions && this.options.extensions.renderers && this.options.extensions.renderers[token.type]) {
|
|
ret = this.options.extensions.renderers[token.type].call({ parser: this }, token);
|
|
if (ret !== false || !['space', 'hr', 'heading', 'code', 'table', 'blockquote', 'list', 'html', 'paragraph', 'text'].includes(token.type)) {
|
|
out += ret || '';
|
|
continue;
|
|
}
|
|
}
|
|
|
|
switch (token.type) {
|
|
case 'space': {
|
|
continue;
|
|
}
|
|
case 'hr': {
|
|
out += this.renderer.hr();
|
|
continue;
|
|
}
|
|
case 'heading': {
|
|
out += this.renderer.heading(
|
|
this.parseInline(token.tokens),
|
|
token.depth,
|
|
unescape(this.parseInline(token.tokens, this.textRenderer)),
|
|
this.slugger);
|
|
continue;
|
|
}
|
|
case 'code': {
|
|
out += this.renderer.code(token.text,
|
|
token.lang,
|
|
token.escaped);
|
|
continue;
|
|
}
|
|
case 'table': {
|
|
header = '';
|
|
|
|
// header
|
|
cell = '';
|
|
l2 = token.header.length;
|
|
for (j = 0; j < l2; j++) {
|
|
cell += this.renderer.tablecell(
|
|
this.parseInline(token.header[j].tokens),
|
|
{ header: true, align: token.align[j] }
|
|
);
|
|
}
|
|
header += this.renderer.tablerow(cell);
|
|
|
|
body = '';
|
|
l2 = token.rows.length;
|
|
for (j = 0; j < l2; j++) {
|
|
row = token.rows[j];
|
|
|
|
cell = '';
|
|
l3 = row.length;
|
|
for (k = 0; k < l3; k++) {
|
|
cell += this.renderer.tablecell(
|
|
this.parseInline(row[k].tokens),
|
|
{ header: false, align: token.align[k] }
|
|
);
|
|
}
|
|
|
|
body += this.renderer.tablerow(cell);
|
|
}
|
|
out += this.renderer.table(header, body);
|
|
continue;
|
|
}
|
|
case 'blockquote': {
|
|
body = this.parse(token.tokens);
|
|
out += this.renderer.blockquote(body);
|
|
continue;
|
|
}
|
|
case 'list': {
|
|
ordered = token.ordered;
|
|
start = token.start;
|
|
loose = token.loose;
|
|
l2 = token.items.length;
|
|
|
|
body = '';
|
|
for (j = 0; j < l2; j++) {
|
|
item = token.items[j];
|
|
checked = item.checked;
|
|
task = item.task;
|
|
|
|
itemBody = '';
|
|
if (item.task) {
|
|
checkbox = this.renderer.checkbox(checked);
|
|
if (loose) {
|
|
if (item.tokens.length > 0 && item.tokens[0].type === 'paragraph') {
|
|
item.tokens[0].text = checkbox + ' ' + item.tokens[0].text;
|
|
if (item.tokens[0].tokens && item.tokens[0].tokens.length > 0 && item.tokens[0].tokens[0].type === 'text') {
|
|
item.tokens[0].tokens[0].text = checkbox + ' ' + item.tokens[0].tokens[0].text;
|
|
}
|
|
} else {
|
|
item.tokens.unshift({
|
|
type: 'text',
|
|
text: checkbox
|
|
});
|
|
}
|
|
} else {
|
|
itemBody += checkbox;
|
|
}
|
|
}
|
|
|
|
itemBody += this.parse(item.tokens, loose);
|
|
body += this.renderer.listitem(itemBody, task, checked);
|
|
}
|
|
|
|
out += this.renderer.list(body, ordered, start);
|
|
continue;
|
|
}
|
|
case 'html': {
|
|
// TODO parse inline content if parameter markdown=1
|
|
out += this.renderer.html(token.text);
|
|
continue;
|
|
}
|
|
case 'paragraph': {
|
|
out += this.renderer.paragraph(this.parseInline(token.tokens));
|
|
continue;
|
|
}
|
|
case 'text': {
|
|
body = token.tokens ? this.parseInline(token.tokens) : token.text;
|
|
while (i + 1 < l && tokens[i + 1].type === 'text') {
|
|
token = tokens[++i];
|
|
body += '\n' + (token.tokens ? this.parseInline(token.tokens) : token.text);
|
|
}
|
|
out += top ? this.renderer.paragraph(body) : body;
|
|
continue;
|
|
}
|
|
|
|
default: {
|
|
const errMsg = 'Token with "' + token.type + '" type was not found.';
|
|
if (this.options.silent) {
|
|
console.error(errMsg);
|
|
return;
|
|
} else {
|
|
throw new Error(errMsg);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
/**
|
|
* Parse Inline Tokens
|
|
*/
|
|
parseInline(tokens, renderer) {
|
|
renderer = renderer || this.renderer;
|
|
let out = '',
|
|
i,
|
|
token,
|
|
ret;
|
|
|
|
const l = tokens.length;
|
|
for (i = 0; i < l; i++) {
|
|
token = tokens[i];
|
|
|
|
// Run any renderer extensions
|
|
if (this.options.extensions && this.options.extensions.renderers && this.options.extensions.renderers[token.type]) {
|
|
ret = this.options.extensions.renderers[token.type].call({ parser: this }, token);
|
|
if (ret !== false || !['escape', 'html', 'link', 'image', 'strong', 'em', 'codespan', 'br', 'del', 'text'].includes(token.type)) {
|
|
out += ret || '';
|
|
continue;
|
|
}
|
|
}
|
|
|
|
switch (token.type) {
|
|
case 'escape': {
|
|
out += renderer.text(token.text);
|
|
break;
|
|
}
|
|
case 'html': {
|
|
out += renderer.html(token.text);
|
|
break;
|
|
}
|
|
case 'link': {
|
|
out += renderer.link(token.href, token.title, this.parseInline(token.tokens, renderer));
|
|
break;
|
|
}
|
|
case 'image': {
|
|
out += renderer.image(token.href, token.title, token.text);
|
|
break;
|
|
}
|
|
case 'strong': {
|
|
out += renderer.strong(this.parseInline(token.tokens, renderer));
|
|
break;
|
|
}
|
|
case 'em': {
|
|
out += renderer.em(this.parseInline(token.tokens, renderer));
|
|
break;
|
|
}
|
|
case 'codespan': {
|
|
out += renderer.codespan(token.text);
|
|
break;
|
|
}
|
|
case 'br': {
|
|
out += renderer.br();
|
|
break;
|
|
}
|
|
case 'del': {
|
|
out += renderer.del(this.parseInline(token.tokens, renderer));
|
|
break;
|
|
}
|
|
case 'text': {
|
|
out += renderer.text(token.text);
|
|
break;
|
|
}
|
|
default: {
|
|
const errMsg = 'Token with "' + token.type + '" type was not found.';
|
|
if (this.options.silent) {
|
|
console.error(errMsg);
|
|
return;
|
|
} else {
|
|
throw new Error(errMsg);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return out;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 (typeof opt === 'function') {
|
|
callback = opt;
|
|
opt = null;
|
|
}
|
|
|
|
opt = merge({}, marked.defaults, opt || {});
|
|
checkSanitizeDeprecation(opt);
|
|
|
|
if (callback) {
|
|
const highlight = opt.highlight;
|
|
let tokens;
|
|
|
|
try {
|
|
tokens = Lexer.lex(src, opt);
|
|
} catch (e) {
|
|
return callback(e);
|
|
}
|
|
|
|
const done = function(err) {
|
|
let out;
|
|
|
|
if (!err) {
|
|
try {
|
|
if (opt.walkTokens) {
|
|
marked.walkTokens(tokens, opt.walkTokens);
|
|
}
|
|
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 (!tokens.length) return done();
|
|
|
|
let pending = 0;
|
|
marked.walkTokens(tokens, function(token) {
|
|
if (token.type === 'code') {
|
|
pending++;
|
|
setTimeout(() => {
|
|
highlight(token.text, token.lang, function(err, code) {
|
|
if (err) {
|
|
return done(err);
|
|
}
|
|
if (code != null && code !== token.text) {
|
|
token.text = code;
|
|
token.escaped = true;
|
|
}
|
|
|
|
pending--;
|
|
if (pending === 0) {
|
|
done();
|
|
}
|
|
});
|
|
}, 0);
|
|
}
|
|
});
|
|
|
|
if (pending === 0) {
|
|
done();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
function onError(e) {
|
|
e.message += '\nPlease report this to https://github.com/markedjs/marked.';
|
|
if (opt.silent) {
|
|
return '<p>An error occurred:</p><pre>'
|
|
+ escape(e.message + '', true)
|
|
+ '</pre>';
|
|
}
|
|
throw e;
|
|
}
|
|
|
|
try {
|
|
const tokens = Lexer.lex(src, opt);
|
|
if (opt.walkTokens) {
|
|
if (opt.async) {
|
|
return Promise.all(marked.walkTokens(tokens, opt.walkTokens))
|
|
.then(() => {
|
|
return Parser.parse(tokens, opt);
|
|
})
|
|
.catch(onError);
|
|
}
|
|
marked.walkTokens(tokens, opt.walkTokens);
|
|
}
|
|
return Parser.parse(tokens, opt);
|
|
} catch (e) {
|
|
onError(e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Options
|
|
*/
|
|
|
|
marked.options =
|
|
marked.setOptions = function(opt) {
|
|
merge(marked.defaults, opt);
|
|
changeDefaults(marked.defaults);
|
|
return marked;
|
|
};
|
|
|
|
marked.getDefaults = getDefaults;
|
|
|
|
marked.defaults = defaults;
|
|
|
|
/**
|
|
* Use Extension
|
|
*/
|
|
|
|
marked.use = function(...args) {
|
|
const opts = merge({}, ...args);
|
|
const extensions = marked.defaults.extensions || { renderers: {}, childTokens: {} };
|
|
let hasExtensions;
|
|
|
|
args.forEach((pack) => {
|
|
// ==-- Parse "addon" extensions --== //
|
|
if (pack.extensions) {
|
|
hasExtensions = true;
|
|
pack.extensions.forEach((ext) => {
|
|
if (!ext.name) {
|
|
throw new Error('extension name required');
|
|
}
|
|
if (ext.renderer) { // Renderer extensions
|
|
const prevRenderer = extensions.renderers ? extensions.renderers[ext.name] : null;
|
|
if (prevRenderer) {
|
|
// Replace extension with func to run new extension but fall back if false
|
|
extensions.renderers[ext.name] = function(...args) {
|
|
let ret = ext.renderer.apply(this, args);
|
|
if (ret === false) {
|
|
ret = prevRenderer.apply(this, args);
|
|
}
|
|
return ret;
|
|
};
|
|
} else {
|
|
extensions.renderers[ext.name] = ext.renderer;
|
|
}
|
|
}
|
|
if (ext.tokenizer) { // Tokenizer Extensions
|
|
if (!ext.level || (ext.level !== 'block' && ext.level !== 'inline')) {
|
|
throw new Error("extension level must be 'block' or 'inline'");
|
|
}
|
|
if (extensions[ext.level]) {
|
|
extensions[ext.level].unshift(ext.tokenizer);
|
|
} else {
|
|
extensions[ext.level] = [ext.tokenizer];
|
|
}
|
|
if (ext.start) { // Function to check for start of token
|
|
if (ext.level === 'block') {
|
|
if (extensions.startBlock) {
|
|
extensions.startBlock.push(ext.start);
|
|
} else {
|
|
extensions.startBlock = [ext.start];
|
|
}
|
|
} else if (ext.level === 'inline') {
|
|
if (extensions.startInline) {
|
|
extensions.startInline.push(ext.start);
|
|
} else {
|
|
extensions.startInline = [ext.start];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (ext.childTokens) { // Child tokens to be visited by walkTokens
|
|
extensions.childTokens[ext.name] = ext.childTokens;
|
|
}
|
|
});
|
|
}
|
|
|
|
// ==-- Parse "overwrite" extensions --== //
|
|
if (pack.renderer) {
|
|
const renderer = marked.defaults.renderer || new Renderer();
|
|
for (const prop in pack.renderer) {
|
|
const prevRenderer = renderer[prop];
|
|
// Replace renderer with func to run extension, but fall back if false
|
|
renderer[prop] = (...args) => {
|
|
let ret = pack.renderer[prop].apply(renderer, args);
|
|
if (ret === false) {
|
|
ret = prevRenderer.apply(renderer, args);
|
|
}
|
|
return ret;
|
|
};
|
|
}
|
|
opts.renderer = renderer;
|
|
}
|
|
if (pack.tokenizer) {
|
|
const tokenizer = marked.defaults.tokenizer || new Tokenizer();
|
|
for (const prop in pack.tokenizer) {
|
|
const prevTokenizer = tokenizer[prop];
|
|
// Replace tokenizer with func to run extension, but fall back if false
|
|
tokenizer[prop] = (...args) => {
|
|
let ret = pack.tokenizer[prop].apply(tokenizer, args);
|
|
if (ret === false) {
|
|
ret = prevTokenizer.apply(tokenizer, args);
|
|
}
|
|
return ret;
|
|
};
|
|
}
|
|
opts.tokenizer = tokenizer;
|
|
}
|
|
|
|
// ==-- Parse WalkTokens extensions --== //
|
|
if (pack.walkTokens) {
|
|
const walkTokens = marked.defaults.walkTokens;
|
|
opts.walkTokens = function(token) {
|
|
let values = [];
|
|
values.push(pack.walkTokens.call(this, token));
|
|
if (walkTokens) {
|
|
values = values.concat(walkTokens.call(this, token));
|
|
}
|
|
return values;
|
|
};
|
|
}
|
|
|
|
if (hasExtensions) {
|
|
opts.extensions = extensions;
|
|
}
|
|
|
|
marked.setOptions(opts);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Run callback for every token
|
|
*/
|
|
|
|
marked.walkTokens = function(tokens, callback) {
|
|
let values = [];
|
|
for (const token of tokens) {
|
|
values = values.concat(callback.call(marked, token));
|
|
switch (token.type) {
|
|
case 'table': {
|
|
for (const cell of token.header) {
|
|
values = values.concat(marked.walkTokens(cell.tokens, callback));
|
|
}
|
|
for (const row of token.rows) {
|
|
for (const cell of row) {
|
|
values = values.concat(marked.walkTokens(cell.tokens, callback));
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case 'list': {
|
|
values = values.concat(marked.walkTokens(token.items, callback));
|
|
break;
|
|
}
|
|
default: {
|
|
if (marked.defaults.extensions && marked.defaults.extensions.childTokens && marked.defaults.extensions.childTokens[token.type]) { // Walk any extensions
|
|
marked.defaults.extensions.childTokens[token.type].forEach(function(childTokens) {
|
|
values = values.concat(marked.walkTokens(token[childTokens], callback));
|
|
});
|
|
} else if (token.tokens) {
|
|
values = values.concat(marked.walkTokens(token.tokens, callback));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return values;
|
|
};
|
|
|
|
/**
|
|
* Parse Inline
|
|
* @param {string} src
|
|
*/
|
|
marked.parseInline = function(src, opt) {
|
|
// throw error in case of non string input
|
|
if (typeof src === 'undefined' || src === null) {
|
|
throw new Error('marked.parseInline(): input parameter is undefined or null');
|
|
}
|
|
if (typeof src !== 'string') {
|
|
throw new Error('marked.parseInline(): input parameter is of type '
|
|
+ Object.prototype.toString.call(src) + ', string expected');
|
|
}
|
|
|
|
opt = merge({}, marked.defaults, opt || {});
|
|
checkSanitizeDeprecation(opt);
|
|
|
|
try {
|
|
const tokens = Lexer.lexInline(src, opt);
|
|
if (opt.walkTokens) {
|
|
marked.walkTokens(tokens, opt.walkTokens);
|
|
}
|
|
return Parser.parseInline(tokens, opt);
|
|
} catch (e) {
|
|
e.message += '\nPlease report this to https://github.com/markedjs/marked.';
|
|
if (opt.silent) {
|
|
return '<p>An error occurred:</p><pre>'
|
|
+ escape(e.message + '', true)
|
|
+ '</pre>';
|
|
}
|
|
throw e;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Expose
|
|
*/
|
|
marked.Parser = Parser;
|
|
marked.parser = Parser.parse;
|
|
marked.Renderer = Renderer;
|
|
marked.TextRenderer = TextRenderer;
|
|
marked.Lexer = Lexer;
|
|
marked.lexer = Lexer.lex;
|
|
marked.Tokenizer = Tokenizer;
|
|
marked.Slugger = Slugger;
|
|
marked.parse = marked;
|
|
|
|
const options = marked.options;
|
|
const setOptions = marked.setOptions;
|
|
const use = marked.use;
|
|
const walkTokens = marked.walkTokens;
|
|
const parseInline = marked.parseInline;
|
|
const parse = marked;
|
|
const parser = Parser.parse;
|
|
const lexer = Lexer.lex;
|
|
|
|
export { Lexer, Parser, Renderer, Slugger, TextRenderer, Tokenizer, defaults, getDefaults, lexer, marked, options, parse, parseInline, parser, setOptions, use, walkTokens };
|