angular-cn/tools/gulp-tasks/cldr/closure.js

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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
const fs = require('fs');
const yargs = require('yargs').argv;
const {I18N_DATA_FOLDER, RELATIVE_I18N_DATA_FOLDER, HEADER} = require('./extract');
const OUTPUT_NAME = `closure-locale.ts`;
// tslint:disable:no-console
module.exports = (gulp, done) => {
// the locales used by closure that will be used to generate the closure-locale file
// extracted from:
// https://github.com/google/closure-library/blob/master/closure/goog/i18n/datetimepatterns.js#L2136
let GOOG_LOCALES = [
'af', 'am', 'ar', 'ar-DZ', 'az', 'be', 'bg', 'bn', 'br', 'bs',
'ca', 'chr', 'cs', 'cy', 'da', 'de', 'de-AT', 'de-CH', 'el', 'en-AU',
'en-CA', 'en-GB', 'en-IE', 'en-IN', 'en-SG', 'en-ZA', 'es', 'es-419', 'es-MX', 'es-US',
'et', 'eu', 'fa', 'fi', 'fr', 'fr-CA', 'ga', 'gl', 'gsw', 'gu',
'haw', 'hi', 'hr', 'hu', 'hy', 'in', 'is', 'it', 'iw', 'ja',
'ka', 'kk', 'km', 'kn', 'ko', 'ky', 'ln', 'lo', 'lt', 'lv',
'mk', 'ml', 'mn', 'mo', 'mr', 'ms', 'mt', 'my', 'ne', 'nl',
'no', 'or', 'pa', 'pl', 'pt', 'pt-PT', 'ro', 'ru', 'sh', 'si',
'sk', 'sl', 'sq', 'sr', 'sv', 'sw', 'ta', 'te', 'th', 'tl',
'tr', 'uk', 'ur', 'uz', 'vi', 'zh', 'zh-CN', 'zh-HK', 'zh-TW', 'zu'
];
// locale id aliases to support deprecated locale ids used by closure
// it maps deprecated ids --> new ids
// manually extracted from ./cldr-data/supplemental/aliases.json
const ALIASES = {
'in': 'id',
'iw': 'he',
'mo': 'ro-MD',
'no': 'nb',
'nb': 'no-NO',
'sh': 'sr-Latn',
'tl': 'fil',
'pt': 'pt-BR',
'zh-CN': 'zh-Hans-CN',
'zh-Hans-CN': 'zh-Hans',
'zh-HK': 'zh-Hant-HK',
'zh-TW': 'zh-Hant-TW',
'zh-Hant-TW': 'zh-Hant',
};
if (yargs.locales) {
GOOG_LOCALES = yargs.locales.split(',');
}
console.log(`Writing file ${I18N_DATA_FOLDER}/${OUTPUT_NAME}`);
fs.writeFileSync(
`${RELATIVE_I18N_DATA_FOLDER}/${OUTPUT_NAME}`, generateAllLocalesFile(GOOG_LOCALES, ALIASES));
console.log(`Formatting ${I18N_DATA_FOLDER}/${OUTPUT_NAME}..."`);
const format = require('gulp-clang-format');
const clangFormat = require('clang-format');
return gulp.src([`${I18N_DATA_FOLDER}/${OUTPUT_NAME}`], {base: '.'})
.pipe(format.format('file', clangFormat))
.pipe(gulp.dest('.'));
};
/**
* Generate a file that contains all locale to import for closure.
* Tree shaking will only keep the data for the `goog.LOCALE` locale.
*/
function generateAllLocalesFile(LOCALES, ALIASES) {
const existingLocalesAliases = {};
const existingLocalesData = {};
// for each locale, get the data and the list of equivalent locales
LOCALES.forEach(locale => {
const eqLocales = new Set();
eqLocales.add(locale);
if (locale.match(/-/)) {
eqLocales.add(locale.replace(/-/g, '_'));
}
// check for aliases
const alias = ALIASES[locale];
if (alias) {
eqLocales.add(alias);
if (alias.match(/-/)) {
eqLocales.add(alias.replace(/-/g, '_'));
}
// to avoid duplicated "case" we regroup all locales in the same "case"
// the simplest way to do that is to have alias aliases
// e.g. 'no' --> 'nb', 'nb' --> 'no-NO'
// which means that we'll have 'no', 'nb' and 'no-NO' in the same "case"
const aliasKeys = Object.keys(ALIASES);
for (let i = 0; i < aliasKeys.length; i++) {
const aliasValue = ALIASES[alias];
if (aliasKeys.indexOf(alias) !== -1 && !eqLocales.has(aliasValue)) {
eqLocales.add(aliasValue);
if (aliasValue.match(/-/)) {
eqLocales.add(aliasValue.replace(/-/g, '_'));
}
}
}
}
for (let l of eqLocales) {
// find the existing content file
const path = `${RELATIVE_I18N_DATA_FOLDER}/${l}.ts`;
if (fs.existsSync(`${RELATIVE_I18N_DATA_FOLDER}/${l}.ts`)) {
const localeName = formatLocale(locale);
existingLocalesData[locale] =
fs.readFileSync(path, 'utf8')
.replace(`${HEADER}\n`, '')
.replace('export default ', `export const locale_${localeName} = `)
.replace('function plural', `function plural_${localeName}`)
.replace(/,(\n | )plural/, `, plural_${localeName}`)
.replace('const u = undefined;\n\n', '');
}
}
existingLocalesAliases[locale] = eqLocales;
});
function generateCases(locale) {
let str = '';
const eqLocales = existingLocalesAliases[locale];
for (let l of eqLocales) {
str += `case '${l}':\n`;
}
str += ` l = locale_${formatLocale(locale)};
break;\n`;
return str;
}
function formatLocale(locale) { return locale.replace(/-/g, '_'); }
// clang-format off
return `${HEADER}
import {registerLocaleData} from '../src/i18n/locale_data';
const u = undefined;
${LOCALES.map(locale => `${existingLocalesData[locale]}`).join('\n')}
let l: any;
switch (goog.LOCALE) {
${LOCALES.map(locale => generateCases(locale)).join('')}}
if(l) {
registerLocaleData(l, goog.LOCALE);
}
`;
// clang-format on
}