87 lines
2.1 KiB
JavaScript
87 lines
2.1 KiB
JavaScript
const mathjax = require('mathjax-node')
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const _ = require('lodash')
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// ------------------------------------
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// Mathjax
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// ------------------------------------
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/* global WIKI */
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const mathRegex = [
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{
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format: 'TeX',
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regex: /\\\[([\s\S]*?)\\\]/g
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},
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{
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format: 'inline-TeX',
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regex: /\\\((.*?)\\\)/g
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},
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{
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format: 'MathML',
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regex: /<math([\s\S]*?)<\/math>/g
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}
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]
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module.exports = {
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key: 'common/mathjax',
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title: 'Mathjax',
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dependsOn: [],
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props: [],
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init (conf) {
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mathjax.config({
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MathJax: {
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jax: ['input/TeX', 'input/MathML', 'output/SVG'],
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extensions: ['tex2jax.js', 'mml2jax.js'],
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TeX: {
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extensions: ['AMSmath.js', 'AMSsymbols.js', 'noErrors.js', 'noUndefined.js']
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},
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SVG: {
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scale: 120,
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font: 'STIX-Web'
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}
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}
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})
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},
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async render (content) {
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let matchStack = []
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let replaceStack = []
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let currentMatch
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let mathjaxState = {}
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_.forEach(mathRegex, mode => {
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do {
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currentMatch = mode.regex.exec(content)
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if (currentMatch) {
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matchStack.push(currentMatch[0])
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replaceStack.push(
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new Promise((resolve, reject) => {
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mathjax.typeset({
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math: (mode.format === 'MathML') ? currentMatch[0] : currentMatch[1],
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format: mode.format,
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speakText: false,
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svg: true,
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state: mathjaxState,
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timeout: 30 * 1000
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}, result => {
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if (!result.errors) {
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resolve(result.svg)
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} else {
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resolve(currentMatch[0])
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WIKI.logger.warn(result.errors.join(', '))
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}
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})
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})
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)
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}
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} while (currentMatch)
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})
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return (matchStack.length > 0) ? Promise.all(replaceStack).then(results => {
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_.forEach(matchStack, (repMatch, idx) => {
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content = content.replace(repMatch, results[idx])
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})
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return content
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}) : Promise.resolve(content)
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}
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}
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