133 строки
4.0 KiB
JavaScript
133 строки
4.0 KiB
JavaScript
// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
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// See License.txt for license information.
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const TextFormatting = require('./text_formatting.jsx');
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const Utils = require('./utils.jsx');
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const marked = require('marked');
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class MattermostInlineLexer extends marked.InlineLexer {
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constructor(links, options) {
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super(links, options);
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this.rules = Object.assign({}, this.rules);
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// modified version of the regex that doesn't break up words in snake_case,
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// allows for links starting with www, and allows links succounded by parentheses
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// the original is /^[\s\S]+?(?=[\\<!\[_*`~]|https?:\/\/| {2,}\n|$)/
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this.rules.text = /^[\s\S]+?(?=[^\w\/]_|[\\<!\[*`~]|https?:\/\/|www\.|\(| {2,}\n|$)/;
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// modified version of the regex that allows links starting with www and those surrounded
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// by parentheses
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// the original is /^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/
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this.rules.url = /^(\(?(?:https?:\/\/|www\.)[^\s<.][^\s<]*[^<.,:;"'\]\s])/;
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// modified version of the regex that allows <links> starting with www.
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// the original is /^<([^ >]+(@|:\/)[^ >]+)>/
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this.rules.autolink = /^<((?:[^ >]+(@|:\/)|www\.)[^ >]+)>/;
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}
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}
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class MattermostParser extends marked.Parser {
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parse(src) {
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this.inline = new MattermostInlineLexer(src.links, this.options, this.renderer);
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this.tokens = src.reverse();
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var out = '';
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while (this.next()) {
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out += this.tok();
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}
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return out;
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}
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}
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class MattermostMarkdownRenderer extends marked.Renderer {
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constructor(options, formattingOptions = {}) {
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super(options);
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this.heading = this.heading.bind(this);
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this.paragraph = this.paragraph.bind(this);
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this.text = this.text.bind(this);
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this.formattingOptions = formattingOptions;
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}
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br() {
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if (this.formattingOptions.singleline) {
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return ' ';
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}
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return super.br();
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}
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heading(text, level, raw) {
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const id = `${this.options.headerPrefix}${raw.toLowerCase().replace(/[^\w]+/g, '-')}`;
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return `<h${level} id="${id}" class="markdown__heading">${text}</h${level}>`;
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}
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link(href, title, text) {
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let outHref = href;
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let outText = text;
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let prefix = '';
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let suffix = '';
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// some links like https://en.wikipedia.org/wiki/Rendering_(computer_graphics) contain brackets
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// and we try our best to differentiate those from ones just wrapped in brackets when autolinking
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if (outHref.startsWith('(') && outHref.endsWith(')') && text === outHref) {
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prefix = '(';
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suffix = ')';
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outText = text.substring(1, text.length - 1);
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outHref = outHref.substring(1, outHref.length - 1);
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}
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if (!(/[a-z+.-]+:/i).test(outHref)) {
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outHref = `http://${outHref}`;
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}
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let output = '<a class="theme markdown__link" href="' + outHref + '"';
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if (title) {
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output += ' title="' + title + '"';
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}
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if (outHref.lastIndexOf(Utils.getTeamURLFromAddressBar(), 0) === 0) {
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output += '>';
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} else {
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output += ' target="_blank">';
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}
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output += outText + '</a>';
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return prefix + output + suffix;
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}
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paragraph(text) {
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if (this.formattingOptions.singleline) {
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return `<p class="markdown__paragraph-inline">${text}</p>`;
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}
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return super.paragraph(text);
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}
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table(header, body) {
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return `<table class="markdown__table"><thead>${header}</thead><tbody>${body}</tbody></table>`;
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}
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text(txt) {
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return TextFormatting.doFormatText(txt, this.formattingOptions);
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}
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}
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export function format(text, options) {
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const markdownOptions = {
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renderer: new MattermostMarkdownRenderer(null, options),
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sanitize: true,
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gfm: true
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};
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const tokens = marked.lexer(text, markdownOptions);
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return new MattermostParser(markdownOptions).parse(tokens);
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}
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