84 lines
2.3 KiB
JavaScript
84 lines
2.3 KiB
JavaScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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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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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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console.log(`Formatting ${I18N_DATA_FOLDER}/${OUTPUT_NAME}..."`);
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const format = require('gulp-clang-format');
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const clangFormat = require('clang-format');
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return gulp.src([`${I18N_DATA_FOLDER}/${OUTPUT_NAME}`], {base: '.'})
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.pipe(format.format('file', clangFormat))
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.pipe(gulp.dest('.'));
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};
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/**
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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 generateCases(locale) {
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let str = '';
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if (locale.match(/-/)) {
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str = `case '${locale.replace('-', '_')}':\n`
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}
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// clang-format off
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str += `case '${locale}':
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l = ${toCamelCase(locale)};
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break;
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`;
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// clang-format on
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return str;
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}
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// clang-format off
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return `${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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registerLocaleData(l);
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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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