2019-12-07 16:10:32 +00:00
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#!/usr/bin/env node
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const fs = require('fs');
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const argparse = require('argparse');
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const markdownIt = require('markdown-it');
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const markdownItTaskCheckbox = require('markdown-it-task-checkbox');
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const markdownItEmoji = require('markdown-it-emoji');
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const markdownItHeaderAnchors = require('./markdown-it-header-anchors');
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const Prism = require('prismjs');
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const loadPrismLanguages = require('prismjs/components/');
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let parser = new argparse.ArgumentParser();
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parser.addArgument('inputFile', {
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nargs: argparse.Const.OPTIONAL,
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metavar: 'INPUT_FILE',
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help: '(stdin by default)',
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});
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parser.addArgument('outputFile', {
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nargs: argparse.Const.OPTIONAL,
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metavar: 'OUTPUT_FILE',
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help: '(stdout by default)',
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});
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let args = parser.parseArgs();
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let md = markdownIt({
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html: true,
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linkify: true,
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highlight: (str, lang) => {
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if (lang.length > 0) {
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loadPrismLanguages([lang]);
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2019-12-11 21:03:10 +00:00
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if (Object.prototype.hasOwnProperty.call(Prism.languages, lang)) {
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return Prism.highlight(str, Prism.languages[lang], lang);
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}
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2019-12-07 16:10:32 +00:00
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}
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return str;
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},
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});
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md.use(markdownItTaskCheckbox);
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md.use(markdownItEmoji);
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md.use(markdownItHeaderAnchors);
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let markdownDocument = fs.readFileSync(args.get('inputFile', 0), 'utf-8');
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let renderedMarkdown = md.render(markdownDocument);
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2020-07-06 15:51:13 +00:00
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let githubMarkdownCSS = fs.readFileSync(
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require.resolve('github-markdown-css/github-markdown.css'),
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);
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let syntaxHighlightingThemeCSS = fs.readFileSync(
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require.resolve('prismjs/themes/prism.css'),
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);
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2019-12-07 16:10:32 +00:00
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let renderedHtmlDocument = `
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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2020-07-06 15:51:13 +00:00
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<style>
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${githubMarkdownCSS}
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</style>
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<style>
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${syntaxHighlightingThemeCSS}
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</style>
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2019-12-07 16:10:32 +00:00
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<style>
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html, body {
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padding: 0;
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margin: 0;
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}
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.markdown-body {
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max-width: 882px;
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margin: 0 auto;
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padding: 32px;
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}
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.octicon-link {
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font: normal normal 16px 'octicons-link';
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line-height: 1;
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-webkit-font-smoothing: antialiased;
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-moz-osx-font-smoothing: grayscale;
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-webkit-user-select: none;
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-moz-user-select: none;
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-ms-user-select: none;
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user-select: none;
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}
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.octicon-link::before {
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content: '\\f05c';
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}
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</style>
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</head>
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<body>
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<article class="markdown-body">
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${renderedMarkdown}
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</article>
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</body>
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</html>
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`;
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fs.writeFileSync(args.get('outputFile', 1), renderedHtmlDocument, 'utf-8');
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