feat(monospace): embed TTF into pandoc-generated DOCX

2026-08-02 18:10:18 +05:30 · 2026-07-23 09:34:57 +05:30
parent 001c9463e3
commit 992c6b72d6
2 changed files with 111 additions and 0 deletions
@@ -0,0 +1,46 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const JSZip = require('jszip');
+
+const FONT_TABLE_PATH = 'word/fontTable.xml';
+const FONT_TABLE_RELS_PATH = 'word/_rels/fontTable.xml.rels';
+
+function fontTableXml(family) {
+  return `<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<w:fonts xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main">
+  <w:font w:name="${family}">
+    <w:panose1 w:val="020F0502020204030204"/>
+    <w:charset w:val="00"/>
+    <w:family w:val="modern"/>
+    <w:pitch w:val="fixed"/>
+    <w:embedRegular r:id="rId1"/>
+  </w:font>
+</w:fonts>`;
+}
+
+function fontTableRels(fontFilename) {
+  return `<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
+  <Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/font" Target="${fontFilename}"/>
+</Relationships>`;
+}
+
+async function embedDocxFont(inputDocxPath, outputDocxPath, ttfPath, fontFamily) {
+  if (!ttfPath || !fs.existsSync(ttfPath)) {
+    throw new Error(`DocxFontEmbedder: TTF not found at ${ttfPath}`);
+  }
+  const inputBytes = fs.readFileSync(inputDocxPath);
+  const zip = await JSZip.loadAsync(inputBytes);
+  const safeFamily = String(fontFamily).replace(/[^A-Za-z0-9]/g, '');
+  const fontFilename = `${safeFamily}.ttf`;
+  const fontBytes = fs.readFileSync(ttfPath);
+  zip.file(`word/fonts/${fontFilename}`, fontBytes);
+  zip.file(FONT_TABLE_PATH, fontTableXml(safeFamily));
+  zip.file(FONT_TABLE_RELS_PATH, fontTableRels(fontFilename));
+  const out = await zip.generateAsync({ type: 'nodebuffer' });
+  fs.writeFileSync(outputDocxPath, out);
+}
+
+module.exports = { embedDocxFont };