dotfiles/script-resources/markdown2htmldoc/main.js
2021-12-16 22:20:03 +01:00

140 lines
3.9 KiB
JavaScript
Executable file

#!/usr/bin/env node
const fs = require('fs');
const pathM = require('path');
const argparse = require('argparse');
const markdownIt = require('markdown-it');
const markdownItTaskCheckbox = require('markdown-it-task-checkbox');
const markdownItEmoji = require('markdown-it-emoji');
const markdownItFootnote = require('markdown-it-footnote');
const markdownItAdmonition = require('markdown-it-admonition');
const markdownItHeaderAnchors = require('./markdown-it-header-anchors');
const Prism = require('prismjs/components/prism-core');
const loadPrismLanguages = require('prismjs/components/');
const PRISM_COMPONENTS = require('prismjs/components.js');
// TODO: integrate <https://github.com/PrismJS/prism-themes>
const PRISM_THEMES = Object.keys(PRISM_COMPONENTS.themes).filter((k) => k !== 'meta');
let parser = new argparse.ArgumentParser();
parser.add_argument('INPUT_FILE', {
nargs: argparse.OPTIONAL,
help: '(stdin by default)',
});
parser.add_argument('OUTPUT_FILE', {
nargs: argparse.OPTIONAL,
help: '(stdout by default)',
});
parser.add_argument('--input-encoding', {
default: 'utf-8',
help: '(utf-8 by default)',
});
parser.add_argument('--output-encoding', {
default: 'utf-8',
help: '(utf-8 by default)',
});
parser.add_argument('--theme', {
choices: ['dotfiles', 'github', 'none'],
default: 'dotfiles',
});
parser.add_argument('--syntax-theme', {
choices: [...PRISM_THEMES, 'none', 'dotfiles'],
});
parser.add_argument('--stylesheet', {
nargs: argparse.ZERO_OR_MORE,
});
parser.add_argument('--script', {
nargs: argparse.ZERO_OR_MORE,
});
let args = parser.parse_args();
loadPrismLanguages(); // loads all languages
let md = markdownIt({
html: true,
linkify: true,
highlight: (code, lang) => {
if (lang && Object.prototype.hasOwnProperty.call(Prism.languages, lang)) {
return Prism.highlight(code, Prism.languages[lang], lang);
}
return null;
},
});
md.use(markdownItTaskCheckbox);
md.use(markdownItEmoji, { shortcuts: {} });
md.use(markdownItHeaderAnchors);
md.use(markdownItFootnote);
md.use(markdownItAdmonition);
let markdownDocument = fs.readFileSync(args.INPUT_FILE || 0, args.input_encoding);
let renderedMarkdown = md.render(markdownDocument);
let stylesheetsTexts = [];
let scriptsTexts = [];
let syntaxThemeName = 'dotfiles';
if (args.theme === 'dotfiles') {
stylesheetsTexts.push(fs.readFileSync(require.resolve('./themes-out/my.css'), 'utf-8'));
} else if (args.theme === 'github') {
stylesheetsTexts.push(fs.readFileSync(require.resolve('./themes-out/github.css'), 'utf-8'));
} else {
syntaxThemeName = 'none';
}
syntaxThemeName = args.syntax_theme || syntaxThemeName;
if (syntaxThemeName && syntaxThemeName !== 'none') {
stylesheetsTexts.push(
fs.readFileSync(
require.resolve(
syntaxThemeName === 'dotfiles'
? './themes-out/my-prismjs-theme.css'
: `prismjs/themes/${syntaxThemeName}.css`,
),
'utf-8',
),
);
}
for (let stylesheetPath of args.stylesheet || []) {
stylesheetsTexts.push(fs.readFileSync(stylesheetPath));
}
for (let scriptPath of args.script || []) {
scriptsTexts.push(fs.readFileSync(scriptPath));
}
let renderedHtmlDocument = `
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>${pathM.basename(args.INPUT_FILE || '<stdin>')}</title>
${stylesheetsTexts
.map((s) => {
let st = s.trim();
return !st.includes('\n') ? `<style>${st}</style>` : `<style>\n${s}\n</style>`;
})
.join('\n')}
</head>
<body>
<article class="markdown-body">
${renderedMarkdown}
</article>
${scriptsTexts
.map((s) => {
let st = s.trim();
return !st.includes('\n') ? `<script>${st}</script>` : `<script>\n${s}\n</script>`;
})
.join('\n')}
</body>
</html>
`.trim();
fs.writeFileSync(args.OUTPUT_FILE || 1, renderedHtmlDocument, args.output_encoding);