#!/usr/bin/env node const fs = require('fs'); const argparse = require('argparse'); const markdownIt = require('markdown-it'); const markdownItTaskCheckbox = require('markdown-it-task-checkbox'); const markdownItEmoji = require('markdown-it-emoji'); const markdownItHeaderAnchors = require('./markdown-it-header-anchors'); const Prism = require('prismjs'); const PRISM_COMPONENTS = require('prismjs/components.js'); const loadPrismLanguages = require('prismjs/components/'); // TODO: integrate const PRISM_THEMES = Object.keys(PRISM_COMPONENTS.themes).filter( (k) => k !== 'meta', ); let parser = new argparse.ArgumentParser(); parser.addArgument('INPUT_FILE', { nargs: argparse.Const.OPTIONAL, help: '(stdin by default)', }); parser.addArgument('OUTPUT_FILE', { nargs: argparse.Const.OPTIONAL, help: '(stdout by default)', }); parser.addArgument('--input-encoding', { defaultValue: 'utf-8', help: '(utf-8 by default)', }); parser.addArgument('--output-encoding', { defaultValue: 'utf-8', help: '(utf-8 by default)', }); parser.addArgument('--no-default-stylesheets', { nargs: argparse.Const.SUPPRESS, }); parser.addArgument('--syntax-theme', { choices: PRISM_THEMES, }); parser.addArgument('--stylesheet', { nargs: argparse.Const.ZERO_OR_MORE, }); parser.addArgument('--script', { nargs: argparse.Const.ZERO_OR_MORE, }); let args = parser.parseArgs(); let md = markdownIt({ html: true, linkify: true, highlight: (str, lang) => { if (lang.length > 0) { loadPrismLanguages([lang]); if (Object.prototype.hasOwnProperty.call(Prism.languages, lang)) { return Prism.highlight(str, Prism.languages[lang], lang); } } return str; }, }); md.use(markdownItTaskCheckbox); md.use(markdownItEmoji); md.use(markdownItHeaderAnchors); let markdownDocument = fs.readFileSync( args.get('INPUT_FILE', 0), args.get('input_encoding'), ); let renderedMarkdown = md.render(markdownDocument); let stylesheetsTexts = []; let scriptsTexts = []; let syntaxThemeName = null; if (!args.get('no_default_stylesheets')) { syntaxThemeName = 'prism'; stylesheetsTexts.push( fs.readFileSync( require.resolve('github-markdown-css/github-markdown.css'), 'utf-8', ), fs.readFileSync( require.resolve('./github-markdown-additions.css'), 'utf-8', ), ); } syntaxThemeName = args.get('syntax_theme') || syntaxThemeName; if (syntaxThemeName) { stylesheetsTexts.push( fs.readFileSync( require.resolve(`prismjs/themes/${syntaxThemeName}.css`), 'utf-8', ), ); } for (let stylesheetPath of args.get('stylesheet', [])) { stylesheetsTexts.push(fs.readFileSync(stylesheetPath)); } for (let scriptPath of args.get('script', [])) { scriptsTexts.push(fs.readFileSync(scriptPath)); } let renderedHtmlDocument = ` ${stylesheetsTexts.map((s) => ``).join('\n')}

${renderedMarkdown}

${scriptsTexts.map((s) => ``).join('\n')} `; fs.writeFileSync( args.get('OUTPUT_FILE', 1), renderedHtmlDocument, args.get('output_encoding'), );