refactor(common): simplify closure-locale by removing imports (#18926)
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Olivier Combe
Victor Berchet
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commit
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@ -7,26 +7,54 @@
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*/
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const fs = require('fs');
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const path = require('path');
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const yargs = require('yargs').argv;
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const {I18N_FOLDER, I18N_DATA_FOLDER, RELATIVE_I18N_DATA_FOLDER, HEADER} = require('./extract');
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const OUTPUT_NAME = `closure-locale.ts`;
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module.exports = (gulp, done) => {
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let GOOG_LOCALES;
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// the locales used by closure that will be used to generate the closure-locale file
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// extracted from:
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// https://github.com/google/closure-library/blob/master/closure/goog/i18n/datetimepatterns.js#L2136
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let GOOG_LOCALES = [
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'af', 'am', 'ar', 'ar-DZ', 'az', 'be', 'bg', 'bn', 'br', 'bs',
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'ca', 'chr', 'cs', 'cy', 'da', 'de', 'de-AT', 'de-CH', 'el', 'en-AU',
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'en-CA', 'en-GB', 'en-IE', 'en-IN', 'en-SG', 'en-ZA', 'es', 'es-419', 'es-MX', 'es-US',
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'et', 'eu', 'fa', 'fi', 'fr', 'fr-CA', 'ga', 'gl', 'gsw', 'gu',
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'haw', 'hi', 'hr', 'hu', 'hy', 'in', 'is', 'it', 'iw', 'ja',
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'ka', 'kk', 'km', 'kn', 'ko', 'ky', 'ln', 'lo', 'lt', 'lv',
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'mk', 'ml', 'mn', 'mo', 'mr', 'ms', 'mt', 'my', 'ne', 'nl',
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'no', 'or', 'pa', 'pl', 'pt', 'pt-PT', 'ro', 'ru', 'sh', 'si',
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'sk', 'sl', 'sq', 'sr', 'sv', 'sw', 'ta', 'te', 'th', 'tl',
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'tr', 'uk', 'ur', 'uz', 'vi', 'zh', 'zh-CN', 'zh-HK', 'zh-TW', 'zu'
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];
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// locale id aliases to support deprecated locale ids used by closure
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// it maps deprecated ids --> new ids
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// manually extracted from ./cldr-data/supplemental/aliases.json
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const ALIASES = {
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'in': 'id',
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'iw': 'he',
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'mo': 'ro-MD',
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'no': 'nb',
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'nb': 'no-NO',
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'sh': 'sr-Latn',
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'tl': 'fil',
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'pt': 'pt-BR',
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'zh-CN': 'zh-Hans-CN',
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'zh-Hans-CN': 'zh-Hans',
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'zh-HK': 'zh-Hant-HK',
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'zh-Hant-HK': 'zh-Hant',
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'zh-TW': 'zh-Hant-TW',
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'zh-Hant-TW': 'zh-Hant'
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};
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if (yargs.locales) {
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GOOG_LOCALES = yargs.locales.split(',');
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} else {
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if (!fs.existsSync(path.join(__dirname, 'cldr-data'))) {
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throw new Error(`You must run "gulp cldr:download" before you can extract the data`);
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}
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const cldrData = require('./cldr-data');
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GOOG_LOCALES = cldrData.availableLocales;
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}
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console.log(`Writing file ${I18N_DATA_FOLDER}/${OUTPUT_NAME}`);
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fs.writeFileSync(
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`${RELATIVE_I18N_DATA_FOLDER}/${OUTPUT_NAME}`, generateAllLocalesFile(GOOG_LOCALES));
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`${RELATIVE_I18N_DATA_FOLDER}/${OUTPUT_NAME}`, generateAllLocalesFile(GOOG_LOCALES, ALIASES));
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console.log(`Formatting ${I18N_DATA_FOLDER}/${OUTPUT_NAME}..."`);
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const format = require('gulp-clang-format');
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@ -40,44 +68,59 @@ module.exports = (gulp, done) => {
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* Generate a file that contains all locale to import for closure.
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* Tree shaking will only keep the data for the `goog.LOCALE` locale.
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*/
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function generateAllLocalesFile(LOCALES) {
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function generateAllLocalesFile(LOCALES, ALIASES) {
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function generateCases(locale) {
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let str = '';
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let localeData;
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const equivalentLocales = [locale];
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if (locale.match(/-/)) {
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str = `case '${locale.replace('-', '_')}':\n`
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equivalentLocales.push(locale.replace('-', '_'));
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}
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// clang-format off
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str += `case '${locale}':
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l = ${toCamelCase(locale)};
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break;
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`;
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// clang-format on
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// check for aliases
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const alias = ALIASES[locale];
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if (alias) {
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equivalentLocales.push(alias);
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// to avoid duplicated "case" we regroup all locales in the same "case"
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// the simplest way to do that is to have alias aliases
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// e.g. 'no' --> 'nb', 'nb' --> 'no-NO'
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// which means that we'll have 'no', 'nb' and 'no-NO' in the same "case"
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const aliasKeys = Object.keys(ALIASES);
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for (let i = 0; i < aliasKeys.length; i++) {
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const aliasValue = ALIASES[alias];
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if (aliasKeys.indexOf(alias) !== -1 && equivalentLocales.indexOf(aliasValue) === -1) {
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equivalentLocales.push(aliasValue);
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}
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}
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}
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for (let i = 0; i < equivalentLocales.length; i++) {
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str += `case '${equivalentLocales[i]}':\n`;
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// find the existing content file
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const path = `${RELATIVE_I18N_DATA_FOLDER}/${equivalentLocales[i]}.ts`;
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if (fs.existsSync(`${RELATIVE_I18N_DATA_FOLDER}/${equivalentLocales[i]}.ts`)) {
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localeData = fs.readFileSync(path, 'utf8').replace(`${HEADER}\nexport default `, '');
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}
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}
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str += ` l = ${localeData}break;\n`;
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return str;
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}
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// clang-format off
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return `${HEADER}
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import {registerLocaleData} from '../src/i18n/locale_data';
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${LOCALES.map(locale => `import ${toCamelCase(locale)} from './${locale}';\n`).join('')}
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let l: any;
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switch (goog.LOCALE) {
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${LOCALES.map(locale => generateCases(locale)).join('')}
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default:
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l = en;
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}
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switch (goog.LOCALE.replace(/_/g, '-')) {
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${LOCALES.map(locale => generateCases(locale)).join('')}}
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registerLocaleData(l);
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if(l) {
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l[0] = goog.LOCALE;
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registerLocaleData(l);
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}
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`;
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// clang-format on
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}
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/**
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* Transform a string to camelCase
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*/
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function toCamelCase(str) {
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return str.replace(/-+([a-z0-9A-Z])/g, (...m) => m[1].toUpperCase());
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}
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module.exports.I18N_FOLDER = I18N_FOLDER;
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module.exports.I18N_DATA_FOLDER = I18N_DATA_FOLDER;
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