88 строки
2.3 KiB
JavaScript
88 строки
2.3 KiB
JavaScript
"use strict";
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const fs = require("fs");
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const path = require("path");
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// node.js needs Intl.PluralRules polyfill
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require("intl-pluralrules");
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const { FluentBundle } = require("fluent");
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const AppConstants = require("./app-constants");
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const mozlog = require("./log");
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const log = mozlog("locale-utils");
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const localesDir = "locales";
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const availableLanguages = [];
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const fluentBundles = {};
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class FluentError extends Error {
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constructor(fluentID = null, ...params) {
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super(...params);
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if (Error.captureStackTrace) {
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Error.captureStackTrace(this, FluentError);
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}
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this.fluentID = fluentID;
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this.message = fluentID;
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}
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}
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const LocaleUtils = {
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init() {
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const supportedLocales = AppConstants.SUPPORTED_LOCALES;
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let languageDirectories = supportedLocales.split(",");
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if (supportedLocales === "*") {
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languageDirectories = fs.readdirSync( localesDir ).filter(item => {
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return (!item.startsWith(".") && fs.lstatSync(path.join(localesDir, item)).isDirectory());
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});
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}
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for (const lang of languageDirectories) {
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try {
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const langBundle = new FluentBundle(lang, {useIsolating: false});
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const ftlFiles = fs.readdirSync(path.join(localesDir, lang)).filter(item => {
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return (item.endsWith(".ftl"));
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});
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for (const file of ftlFiles) {
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const langFTLSource = fs.readFileSync(path.join(localesDir, lang, file), "utf8");
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langBundle.addMessages(langFTLSource);
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}
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fluentBundles[lang] = langBundle;
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availableLanguages.push(lang);
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} catch (e) {
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log.error("loadFluentBundle", {stack: e.stack});
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}
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}
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log.info("LocaleUtils.init", {availableLanguages});
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log.info("LocaleUtils.init", {fluentBundles});
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return {availableLanguages, fluentBundles};
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},
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loadLanguagesIntoApp (app) {
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app.locals.AVAILABLE_LANGUAGES = availableLanguages;
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app.locals.FLUENT_BUNDLES = fluentBundles;
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},
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fluentFormat (supportedLocales, id, args=null, errors=null) {
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for (const locale of supportedLocales) {
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const bundle = fluentBundles[locale];
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if (bundle.hasMessage(id)) {
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const message = bundle.getMessage(id);
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return bundle.format(message, args);
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}
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}
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return id;
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},
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};
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module.exports = {
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FluentError,
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LocaleUtils,
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};
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