43152351fa
- Wrap browser lifecycle in try/finally so browser.close() always runs - Fall back to SIGKILL of browser.process() if close() fails - Add --disable-dev-shm-usage to launch args (container stability) - Add tini as ENTRYPOINT in Dockerfile for defense in depth - Bump version to 1.0.2
287 lines
7.7 KiB
JavaScript
287 lines
7.7 KiB
JavaScript
const fs = require("fs");
|
|
const path = require("path");
|
|
const { marked } = require("marked");
|
|
|
|
function escapeHtml(s) {
|
|
return s
|
|
.replace(/&/g, "&")
|
|
.replace(/</g, "<")
|
|
.replace(/>/g, ">")
|
|
.replace(/"/g, """);
|
|
}
|
|
|
|
function stripHtml(s) {
|
|
return s.replace(/<[^>]*>/g, "");
|
|
}
|
|
|
|
function buildToc(items) {
|
|
if (items.length === 0) return "";
|
|
let html = "";
|
|
let prevDepth = 0;
|
|
for (const item of items) {
|
|
if (item.depth > prevDepth) {
|
|
for (let i = prevDepth; i < item.depth; i++) html += "<ul>";
|
|
} else if (item.depth < prevDepth) {
|
|
for (let i = item.depth; i < prevDepth; i++) html += "</ul>";
|
|
}
|
|
html += `<li><a href="#${item.slug}">${escapeHtml(item.text)}</a></li>\n`;
|
|
prevDepth = item.depth;
|
|
}
|
|
for (let i = 0; i < prevDepth; i++) html += "</ul>";
|
|
return html;
|
|
}
|
|
|
|
function markdownToHtml(md) {
|
|
const renderer = new marked.Renderer();
|
|
const defaultCode = renderer.code.bind(renderer);
|
|
|
|
renderer.code = function ({ text, lang }) {
|
|
if (lang === "mermaid") {
|
|
return `<pre class="mermaid">${escapeHtml(text)}</pre>\n`;
|
|
}
|
|
return defaultCode({ text, lang });
|
|
};
|
|
|
|
const tocItems = [];
|
|
renderer.heading = function ({ text, depth }) {
|
|
const slug = text
|
|
.toLowerCase()
|
|
.replace(/<[^>]*>/g, "")
|
|
.replace(/[^\w\s-]/g, "")
|
|
.replace(/\s+/g, "-")
|
|
.replace(/-+/g, "-")
|
|
.trim();
|
|
tocItems.push({ text: stripHtml(text), depth, slug });
|
|
return `<h${depth} id="${slug}">${text}</h${depth}>\n`;
|
|
};
|
|
|
|
marked.setOptions({ renderer, gfm: true, breaks: false });
|
|
const bodyHtml = marked.parse(md);
|
|
const tocHtml = buildToc(tocItems);
|
|
const docTitle = tocItems.length > 0 ? tocItems[0].text : "Document";
|
|
|
|
return `<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<meta charset="UTF-8">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
<title>${escapeHtml(docTitle)}</title>
|
|
<style>
|
|
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
|
|
html { font-size: 16px; scroll-behavior: smooth; }
|
|
body {
|
|
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
|
|
color: #24292f;
|
|
background: #ffffff;
|
|
line-height: 1.6;
|
|
display: flex;
|
|
min-height: 100vh;
|
|
}
|
|
#toc-sidebar {
|
|
position: fixed;
|
|
top: 0; left: 0;
|
|
width: 280px;
|
|
height: 100vh;
|
|
overflow-y: auto;
|
|
background: #f6f8fa;
|
|
border-right: 1px solid #d0d7de;
|
|
padding: 20px 16px;
|
|
font-size: 0.85rem;
|
|
z-index: 10;
|
|
}
|
|
#toc-sidebar ul { list-style: none; padding-left: 0; }
|
|
#toc-sidebar ul ul { padding-left: 16px; }
|
|
#toc-sidebar li { margin: 3px 0; }
|
|
#toc-sidebar a {
|
|
color: #0969da;
|
|
text-decoration: none;
|
|
display: block;
|
|
padding: 2px 6px;
|
|
border-radius: 4px;
|
|
overflow: hidden;
|
|
text-overflow: ellipsis;
|
|
white-space: nowrap;
|
|
}
|
|
#toc-sidebar a:hover { background: #ddf4ff; }
|
|
#toc-sidebar a.active { background: #0969da; color: #fff; }
|
|
#toc-toggle {
|
|
display: none;
|
|
position: fixed;
|
|
top: 12px; left: 12px;
|
|
z-index: 20;
|
|
background: #f6f8fa;
|
|
border: 1px solid #d0d7de;
|
|
border-radius: 6px;
|
|
padding: 6px 10px;
|
|
cursor: pointer;
|
|
font-size: 1.1rem;
|
|
}
|
|
#content {
|
|
margin-left: 280px;
|
|
max-width: 920px;
|
|
padding: 40px 48px 80px;
|
|
width: 100%;
|
|
}
|
|
h1, h2, h3, h4, h5, h6 {
|
|
margin-top: 1.8em;
|
|
margin-bottom: 0.6em;
|
|
font-weight: 600;
|
|
line-height: 1.25;
|
|
color: #1f2328;
|
|
}
|
|
h1 { font-size: 2em; border-bottom: 1px solid #d0d7de; padding-bottom: 0.3em; }
|
|
h2 { font-size: 1.5em; border-bottom: 1px solid #d0d7de; padding-bottom: 0.3em; }
|
|
h3 { font-size: 1.25em; }
|
|
h1:first-child { margin-top: 0; }
|
|
p { margin: 0 0 1em; }
|
|
a { color: #0969da; text-decoration: none; }
|
|
a:hover { text-decoration: underline; }
|
|
strong { font-weight: 600; }
|
|
hr { border: none; border-top: 1px solid #d0d7de; margin: 2em 0; }
|
|
ul, ol { margin: 0 0 1em 2em; }
|
|
li + li { margin-top: 0.25em; }
|
|
table {
|
|
border-collapse: collapse;
|
|
width: 100%;
|
|
margin: 0 0 1em;
|
|
font-size: 0.9rem;
|
|
}
|
|
th, td { border: 1px solid #d0d7de; padding: 8px 12px; text-align: left; }
|
|
th { background: #f6f8fa; font-weight: 600; }
|
|
tr:nth-child(even) { background: #f6f8fa; }
|
|
code {
|
|
font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
|
|
font-size: 0.875em;
|
|
background: #f6f8fa;
|
|
padding: 0.2em 0.4em;
|
|
border-radius: 4px;
|
|
}
|
|
pre {
|
|
background: #f6f8fa;
|
|
border: 1px solid #d0d7de;
|
|
border-radius: 6px;
|
|
padding: 16px;
|
|
overflow-x: auto;
|
|
margin: 0 0 1em;
|
|
line-height: 1.45;
|
|
}
|
|
pre code { background: none; padding: 0; font-size: 0.85rem; }
|
|
pre.mermaid {
|
|
background: #fff;
|
|
border: 1px solid #d0d7de;
|
|
text-align: center;
|
|
padding: 20px;
|
|
}
|
|
@media (max-width: 900px) {
|
|
#toc-sidebar { transform: translateX(-100%); transition: transform 0.25s; }
|
|
#toc-sidebar.open { transform: translateX(0); }
|
|
#toc-toggle { display: block; }
|
|
#content { margin-left: 0; padding: 40px 24px 80px; }
|
|
}
|
|
@media print {
|
|
#toc-sidebar, #toc-toggle { display: none; }
|
|
#content { margin-left: 0; max-width: 100%; padding: 0; }
|
|
pre.mermaid { border: none; }
|
|
h1, h2 { break-after: avoid; }
|
|
table { break-inside: avoid; }
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<button id="toc-toggle" onclick="document.getElementById('toc-sidebar').classList.toggle('open')" aria-label="Toggle table of contents">☰</button>
|
|
<nav id="toc-sidebar">
|
|
${tocHtml}
|
|
</nav>
|
|
<main id="content">
|
|
${bodyHtml}
|
|
</main>
|
|
<script src="https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.min.js"></script>
|
|
<script>
|
|
mermaid.initialize({
|
|
startOnLoad: true,
|
|
theme: "default",
|
|
flowchart: { useMaxWidth: true, htmlLabels: true, curve: "basis" },
|
|
securityLevel: "loose"
|
|
});
|
|
</script>
|
|
<script>
|
|
(function () {
|
|
const links = document.querySelectorAll("#toc-sidebar a");
|
|
const headings = [];
|
|
links.forEach(function (a) {
|
|
const id = a.getAttribute("href").slice(1);
|
|
const el = document.getElementById(id);
|
|
if (el) headings.push({ el: el, a: a });
|
|
});
|
|
if (headings.length === 0) return;
|
|
function onScroll() {
|
|
let current = headings[0];
|
|
for (const h of headings) {
|
|
if (h.el.getBoundingClientRect().top <= 80) current = h;
|
|
}
|
|
links.forEach(function (a) { a.classList.remove("active"); });
|
|
current.a.classList.add("active");
|
|
}
|
|
window.addEventListener("scroll", onScroll, { passive: true });
|
|
onScroll();
|
|
})();
|
|
</script>
|
|
</body>
|
|
</html>`;
|
|
}
|
|
|
|
async function htmlToPdf(html) {
|
|
const puppeteer = require("puppeteer-core");
|
|
|
|
const browser = await puppeteer.launch({
|
|
executablePath: process.env.CHROME_PATH || "/usr/bin/google-chrome-stable",
|
|
args: ["--no-sandbox", "--disable-setuid-sandbox", "--disable-dev-shm-usage"],
|
|
});
|
|
try {
|
|
const page = await browser.newPage();
|
|
|
|
const htmlForPdf = html.replace(
|
|
/<script src="https:\/\/cdn\.jsdelivr\.net\/npm\/mermaid@[^"]*"><\/script>/,
|
|
""
|
|
);
|
|
await page.setContent(htmlForPdf, { waitUntil: "domcontentloaded" });
|
|
|
|
const hasMermaid = await page.evaluate(
|
|
() => document.querySelectorAll("pre.mermaid").length > 0
|
|
);
|
|
if (hasMermaid) {
|
|
const mermaidJs = fs.readFileSync(
|
|
path.join(__dirname, "mermaid.min.js"),
|
|
"utf-8"
|
|
);
|
|
await page.addScriptTag({ content: mermaidJs });
|
|
await page.evaluate(() => {
|
|
mermaid.initialize({
|
|
startOnLoad: false,
|
|
theme: "default",
|
|
flowchart: { useMaxWidth: true, htmlLabels: true, curve: "basis" },
|
|
securityLevel: "loose",
|
|
});
|
|
return mermaid.run({ querySelector: "pre.mermaid" });
|
|
});
|
|
}
|
|
|
|
const pdfBuffer = await page.pdf({
|
|
format: "A4",
|
|
printBackground: true,
|
|
margin: { top: "20mm", bottom: "20mm", left: "15mm", right: "15mm" },
|
|
});
|
|
return pdfBuffer;
|
|
} finally {
|
|
try {
|
|
await browser.close();
|
|
} catch (e) {
|
|
try {
|
|
browser.process()?.kill("SIGKILL");
|
|
} catch (_) {}
|
|
}
|
|
}
|
|
}
|
|
|
|
module.exports = { markdownToHtml, htmlToPdf };
|