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80 lines
3.6 KiB
80 lines
3.6 KiB
'use strict';
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const greentextRegex = /^>((?!>\d+|>>/\w+(/\d*)?).*)/gm
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, pinktextRegex = /^<(.+)/gm
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, boldRegex = /''(.+?)''/gm
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, titleRegex = /==(.+?)==/gm
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, monoRegex = /`(.+?)`/gm
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, underlineRegex = /__(.+?)__/gm
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, strikeRegex = /~~(.+?)~~/gm
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, italicRegex = /\*\*(.+?)\*\*/gm
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, spoilerRegex = /\|\|([\s\S]+?)\|\|/gm
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, detectedRegex = /(\(\(\(.+?\)\)\))/gm
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, linkRegex = /https?\://[^\s<>\[\]{}|\\^]+/g
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, codeRegex = /(?:(?<language>[a-z+]{1,10})\r?\n)?(?<code>[\s\S]+)/i
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, splitRegex = /```([\s\S]+?)```/gm
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, trimNewlineRegex = /^\s*(\r?\n)*|(\r?\n)*$/g
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, diceRegex = /##(?<numdice>[1-9][0-9]{0,8})d(?<numsides>1[0-9]{1,8}|[2-9][0-9]{0,8})(?:(?<operator>[+-])(?<modifier>[1-9][0-9]{0,8}))?/gmi
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, getDomain = (string) => string.split(/\/\/|\//)[1] //unused atm
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, escape = require(__dirname+'/escape.js')
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, { highlight, highlightAuto } = require('highlight.js')
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, { highlightOptions } = require(__dirname+'/../../configs/main.js')
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, replacements = [
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{ regex: pinktextRegex, cb: (match, pinktext) => `<span class='pinktext'><${pinktext}</span>` },
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{ regex: greentextRegex, cb: (match, greentext) => `<span class='greentext'>>${greentext}</span>` },
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{ regex: boldRegex, cb: (match, bold) => `<span class='bold'>${bold}</span>` },
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{ regex: underlineRegex, cb: (match, underline) => `<span class='underline'>${underline}</span>` },
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{ regex: strikeRegex, cb: (match, strike) => `<span class='strike'>${strike}</span>` },
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{ regex: titleRegex, cb: (match, title) => `<span class='title'>${title}</span>` },
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{ regex: italicRegex, cb: (match, italic) => `<span class='em'>${italic}</span>` },
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{ regex: spoilerRegex, cb: (match, spoiler) => `<span class='spoiler'>${spoiler}</span>` },
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{ regex: monoRegex, cb: (match, mono) => `<span class='mono'>${mono}</span>` },
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{ regex: linkRegex, cb: require(__dirname+'/linkmatch.js') },
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{ regex: detectedRegex, cb: (match, detected) => `<span class='detected'>${detected}</span>` },
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{ regex: diceRegex, cb: require(__dirname+'/diceroll.js') },
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];
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module.exports = {
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markdown: (text) => {
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const chunks = text.split(splitRegex);
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for (let i = 0; i < chunks.length; i++) {
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//every other chunk will be a code block
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if (i % 2 === 0) {
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const escaped = escape(chunks[i]);
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const newlineFix = escaped.replace(/^\r?\n/,''); //fix ending newline because of codeblock
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chunks[i] = module.exports.processRegularChunk(newlineFix);
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} else {
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chunks[i] = module.exports.processCodeChunk(chunks[i]);
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}
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}
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return chunks.join('');
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},
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processCodeChunk: (text) => {
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const matches = text.match(codeRegex);
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const trimFix = matches.groups.code.replace(trimNewlineRegex, '');
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let lang;
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if (matches.groups.language && matches.groups.language.length > 0) {
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lang = matches.groups.language.toLowerCase();
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}
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if (!lang) {
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const { language, relevance, value } = highlightAuto(trimFix, highlightOptions.languageSubset);
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if (relevance > highlightOptions.threshold) {
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return `<span class='code hljs'><small>possible language: ${language}, relevance: ${relevance}</small>\n${value}</span>`;
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}
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} else if (lang !== 'plain' && highlightOptions.languageSubset.includes(lang)) {
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const { value } = highlight(lang, trimFix, true);
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return `<span class='code hljs'><small>language: ${lang}</small>\n${value}</span>`;
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}
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return `<span class='code'>${escape(trimFix)}</span>`;
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},
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processRegularChunk: (text) => {
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for (let i = 0; i < replacements.length; i++) {
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text = text.replace(replacements[i].regex, replacements[i].cb);
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}
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return text;
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},
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}
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