mirror of
https://github.com/classilla/tenfourfox.git
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71 lines
2.4 KiB
JavaScript
71 lines
2.4 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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module.metadata = {
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"stability": "unstable"
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};
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const { Cc, Ci } = require("chrome");
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const { getPreferedLocales, findClosestLocale } = require("./locale");
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const { readURI } = require("../net/url");
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const { resolve } = require("../core/promise");
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function parseJsonURI(uri) {
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return readURI(uri).
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then(JSON.parse).
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then(null, function (error) {
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throw Error("Failed to parse locale file:\n" + uri + "\n" + error);
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});
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}
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// Returns the array stored in `locales.json` manifest that list available
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// locales files
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function getAvailableLocales(rootURI) {
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let uri = rootURI + "locales.json";
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return parseJsonURI(uri).then(function (manifest) {
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return "locales" in manifest &&
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Array.isArray(manifest.locales) ?
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manifest.locales : [];
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});
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}
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// Returns URI of the best locales file to use from the XPI
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function getBestLocale(rootURI) {
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// Read localization manifest file that contains list of available languages
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return getAvailableLocales(rootURI).then(function (availableLocales) {
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// Retrieve list of prefered locales to use
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let preferedLocales = getPreferedLocales();
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// Compute the most preferable locale to use by using these two lists
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return findClosestLocale(availableLocales, preferedLocales);
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});
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}
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/**
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* Read localization files and returns a promise of data to put in `@l10n/data`
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* pseudo module, in order to allow l10n/json/core to fetch it.
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*/
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exports.load = function load(rootURI) {
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// First, search for a locale file:
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return getBestLocale(rootURI).then(function (bestMatchingLocale) {
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// It may be null if the addon doesn't have any locale file
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if (!bestMatchingLocale)
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return resolve(null);
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let localeURI = rootURI + "locale/" + bestMatchingLocale + ".json";
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// Locale files only contains one big JSON object that is used as
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// an hashtable of: "key to translate" => "translated key"
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// TODO: We are likely to change this in order to be able to overload
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// a specific key translation. For a specific package, module or line?
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return parseJsonURI(localeURI).then(function (json) {
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return {
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hash: json,
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bestMatchingLocale: bestMatchingLocale
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};
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});
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});
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}
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