102 lines
3.5 KiB
JavaScript
102 lines
3.5 KiB
JavaScript
// 1.Flattens messages extracted via the React Intl Babel plugin. An error will be
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// thrown if there are messages with the same `id`. The result is a file containing
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// `id: message` pairs in "en" locale.
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//
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// 2. Takes all translations and groups them into a single file.
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var fs = require('fs');
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var path = require('path');
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var globSync = require('glob').sync;
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var mkdirpSync = require('mkdirp').sync;
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const DEFAULT_TRANSLATION = 'en.json';
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const MESSAGES_PATTERN = './src/i18n/src/**/*.json';
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const LANG_DIR = './src/i18n/';
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const LANG_PATTERN = './src/i18n/*.json';
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const FINAL_FILE = './src/messages.json';
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const MISSING_MARKER = ':!![MISSING]!!:';
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const OBSOLETE_MARKER = ':!![OBSOLETE]!!:';
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// The react-intl-babel-plugin saves extracted messages
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// into files, one fine per component. Rewrite them into
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// a single file en.json.
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let messages = globSync(MESSAGES_PATTERN)
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.map((filename) => fs.readFileSync(filename, 'utf8'))
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.map((file) => JSON.parse(file))
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.reduce((collection, descriptors) => {
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descriptors.forEach(({id, defaultMessage}) => {
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if (!defaultMessage) {
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return;
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}
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if (collection.hasOwnProperty(id)) {
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// Message is already defined.
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throw new Error(`Duplicate message id: ${id}`);
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}
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collection[id] = defaultMessage;
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});
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return collection;
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}, {});
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let filename = path.join(LANG_DIR, DEFAULT_TRANSLATION);
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mkdirpSync(path.dirname(filename));
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fs.writeFileSync(filename, JSON.stringify(messages, null, 2)+"\n");
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// Find messages present in en.json but missing in translations and vice versa.
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// Mark missing or obsolete messages as such in translation files.
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globSync(LANG_PATTERN)
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.map((filename) => {
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const parts = filename.split('/');
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if (parts[parts.length-1] != DEFAULT_TRANSLATION) {
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const translated = JSON.parse(fs.readFileSync(filename, 'utf8'));
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// Find missing messages.
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Object.entries(messages).forEach((ent) => {
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if (!translated.hasOwnProperty(ent[0])) {
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translated[ent[0]] = MISSING_MARKER + ent[1];
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}
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});
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// Find no longer needed messages.
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Object.entries(translated).forEach((ent) => {
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if (!messages.hasOwnProperty(ent[0])) {
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let val = translated[ent[0]];
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if (val.indexOf(MISSING_MARKER) == 0) {
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val = val.substring(0, MISSING_MARKER.length);
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}
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if (val.indexOf(OBSOLETE_MARKER) != 0) {
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val = OBSOLETE_MARKER + val;
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}
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translated[ent[0]] = val;
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}
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});
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fs.writeFileSync(filename, JSON.stringify(translated, null, 2)+"\n");
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}
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});
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// Combine all translations into a single json {"lang_1": {...}, "lang_2: {...}"}
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// while removing messages marked as missing or obsolete.
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// Read all translations.
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messages = globSync(LANG_PATTERN)
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.map((filename) => {
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const parts = filename.split('/');
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const locale = parts[parts.length - 1].split('.json')[0];
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const translated = JSON.parse(fs.readFileSync(filename, 'utf8'));
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// Strip messages prefixed with MISSING or OBSOLETE markers.
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for (let id in translated) {
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if (translated[id].indexOf(OBSOLETE_MARKER) == 0 ||
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translated[id].indexOf(MISSING_MARKER) == 0) {
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delete translated[id];
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}
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}
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return { [locale]: translated };
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})
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.reduce((collection, descriptors) => {
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return { ...collection, ...descriptors };
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}, {});
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// Write file with all translations combined.
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mkdirpSync(path.dirname(FINAL_FILE));
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fs.writeFileSync(FINAL_FILE, JSON.stringify(messages, null, 2)+"\n");
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