gmi-web/to-html.js

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const TOKENS_EXT = /\.tokens\.json$/;
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module.exports = ({ css } = { css: true }) => (file, cb) => {
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if (!TOKENS_EXT.test(file.path)) return cb(null, file);
file.path = file.path.replace(TOKENS_EXT, ".html");
file.contents = Buffer.from(`<!DOCTYPE html>
<html>
<meta charset="utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1">${
css
? '\n<meta name="color-scheme" content="dark light">\n<link rel="stylesheet" href="/gmi.min.css">'
: ""
}
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<body>
${toHTML(JSON.parse(file.contents.toString("utf8")))}
</body>
</html>
`);
return cb(null, file);
};
function toHTML(tokens) {
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let body = [];
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let cursor = tokens.shift();
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while (tokens.length) {
if (cursor.pre) {
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body.push(`<pre${cursor.alt ? `title="${cursor.alt}"` : ""}>`);
const closing = tokens.findIndex((token) => token.pre);
body = body.concat(tokens.slice(0, closing).map(({ text }) => text));
body.push("</pre>");
tokens = tokens.slice(closing + 1);
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}
if (cursor.li) {
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body.push(`<ul>`);
const closing = tokens.findIndex((token) => !token.li);
body = body.concat(tokens.slice(0, closing).map(line));
body.push("</ul>");
tokens = tokens.slice(closing + 1);
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}
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body.push(line(cursor));
cursor = tokens.shift();
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}
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return body.join("\n");
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}
function line({ text, href, title, pre, alt, h1, h2, h3, li, quote }) {
if (text) return `<p>${text}</p>`;
if (href) return `<a href="${href}">${title || href}</a>`;
if (h1) return `<h1>${h1}</h1>`;
if (h2) return `<h2>${h2}</h2>`;
if (h3) return `<h3>${h3}</h3>`;
if (li) return `<li>${li}</li>`;
if (quote) return `<blockquote>${quote}</blockquote>`;
return `<p><br></p>`;
}