31 lines
1.5 KiB
JavaScript
31 lines
1.5 KiB
JavaScript
import fs from 'node:fs/promises';
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import { fileURLToPath } from 'node:url';
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const escapeText = value => value.replaceAll('&', '&').replaceAll('<', '<').replaceAll('>', '>');
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// Populate the checked-in German fallback while retaining all runtime i18n markers.
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export function localizeHtml(source, translate) {
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const result = source.replaceAll(/(<[^>]+\bdata-i18n="([^"]+)"[^>]*>)([^<]*)(<\/)/g,
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(_match, opening, key, _text, closing) => opening + escapeText(translate(key)) + closing);
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return result.replaceAll(/<[^>]+>/g, opening => {
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let translated = opening;
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for (const attribute of ['title', 'aria-label', 'placeholder', 'alt']) {
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const key = new RegExp(`data-i18n-${attribute}="([^"]+)"`).exec(opening)?.[1];
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if (!key) continue;
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const value = escapeText(translate(key)).replaceAll('"', '"');
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// Match an actual attribute, never the suffix of its data-i18n marker.
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translated = translated.replaceAll(new RegExp(`(\\s)${attribute}="[^"]*"`, 'g'), (_match, space) => `${space}${attribute}="${value}"`);
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}
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return translated;
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});
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}
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if (process.argv[1] === fileURLToPath(import.meta.url)) {
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await import('../public/js/texts-de.js');
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await import('../public/js/i18n.js');
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const file = new URL('../public/index.html', import.meta.url);
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const source = await fs.readFile(file, 'utf8');
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const translated = localizeHtml(source, key => globalThis.Wegwichtel.I18n.t(key));
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await fs.writeFile(file, translated);
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}
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