masi
42 lines
1.3 KiB
JavaScript
42 lines
1.3 KiB
JavaScript
// Strip translator credits and promo lines from an existing EPUB, in place.
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// Usage: node scripts/clean-epub.js <file.epub>...
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import JSZip from 'jszip';
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import { load } from 'cheerio';
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import fs from 'fs';
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import { stripPromo } from './clean-chapter.js';
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const files = process.argv.slice(2);
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if (!files.length) {
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console.error('Usage: node scripts/clean-epub.js <file.epub>...');
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process.exit(2);
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}
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for (const file of files) {
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const zip = await JSZip.loadAsync(fs.readFileSync(file));
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let removed = 0;
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for (const name of Object.keys(zip.files)) {
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if (!/\.x?html?$/i.test(name) || /(^|\/)nav\.xhtml$/i.test(name)) continue;
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const $ = load(await zip.file(name).async('string'), { xml: true });
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const n = stripPromo($);
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if (n) {
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zip.file(name, $.xml());
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removed += n;
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}
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}
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if (removed) {
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const tmp = `${file}.tmp`;
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// EPUB requires mimetype stored uncompressed; loaded entries lose that option.
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zip.file('mimetype', 'application/epub+zip', { compression: 'STORE' });
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fs.writeFileSync(
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tmp,
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await zip.generateAsync({
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type: 'nodebuffer',
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compression: 'DEFLATE',
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mimeType: 'application/epub+zip',
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}),
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);
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fs.renameSync(tmp, file);
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}
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process.stdout.write(`${file}: removed ${removed} promo paragraphs\n`);
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}
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