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-rw-r--r--addon-sdk/source/lib/sdk/l10n/locale.js127
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diff --git a/addon-sdk/source/lib/sdk/l10n/locale.js b/addon-sdk/source/lib/sdk/l10n/locale.js
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--- a/addon-sdk/source/lib/sdk/l10n/locale.js
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-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-"use strict";
-
-module.metadata = {
- "stability": "unstable"
-};
-
-const prefs = require("../preferences/service");
-const { Cu, Cc, Ci } = require("chrome");
-const { Services } = Cu.import("resource://gre/modules/Services.jsm");
-
-/**
- * Gets the currently selected locale for display.
- * Gets all usable locale that we can use sorted by priority of relevance
- * @return Array of locales, begins with highest priority
- */
-const PREF_MATCH_OS_LOCALE = "intl.locale.matchOS";
-const PREF_SELECTED_LOCALE = "general.useragent.locale";
-const PREF_ACCEPT_LANGUAGES = "intl.accept_languages";
-
-function getPreferedLocales(caseSensitve) {
- let locales = [];
- function addLocale(locale) {
- locale = locale.trim();
- if (!caseSensitve)
- locale = locale.toLowerCase();
- if (locales.indexOf(locale) === -1)
- locales.push(locale);
- }
-
- // Most important locale is OS one. But we use it, only if
- // "intl.locale.matchOS" pref is set to `true`.
- // Currently only used for multi-locales mobile builds.
- // http://mxr.mozilla.org/mozilla-central/source/mobile/android/installer/Makefile.in#46
- if (prefs.get(PREF_MATCH_OS_LOCALE, false)) {
- let localeService = Cc["@mozilla.org/intl/nslocaleservice;1"].
- getService(Ci.nsILocaleService);
- let osLocale = localeService.getLocaleComponentForUserAgent();
- addLocale(osLocale);
- }
-
- // In some cases, mainly on Fennec and on Linux version,
- // `general.useragent.locale` is a special 'localized' value, like:
- // "chrome://global/locale/intl.properties"
- let browserUiLocale = prefs.getLocalized(PREF_SELECTED_LOCALE, "") ||
- prefs.get(PREF_SELECTED_LOCALE, "");
- if (browserUiLocale)
- addLocale(browserUiLocale);
-
- // Third priority is the list of locales used for web content
- let contentLocales = prefs.getLocalized(PREF_ACCEPT_LANGUAGES, "") ||
- prefs.get(PREF_ACCEPT_LANGUAGES, "");
- if (contentLocales) {
- // This list is a string of locales seperated by commas.
- // There is spaces after commas, so strip each item
- for (let locale of contentLocales.split(","))
- addLocale(locale.replace(/(^\s+)|(\s+$)/g, ""));
- }
-
- // Finally, we ensure that en-US is the final fallback if it wasn't added
- addLocale("en-US");
-
- return locales;
-}
-exports.getPreferedLocales = getPreferedLocales;
-
-/**
- * Selects the closest matching locale from a list of locales.
- *
- * @param aLocales
- * An array of available locales
- * @param aMatchLocales
- * An array of prefered locales, ordered by priority. Most wanted first.
- * Locales have to be in lowercase.
- * If null, uses getPreferedLocales() results
- * @return the best match for the currently selected locale
- *
- * Stolen from http://dxr.mozilla.org/mozilla-central/source/toolkit/mozapps/extensions/internal/XPIProvider.jsm
- */
-exports.findClosestLocale = function findClosestLocale(aLocales, aMatchLocales) {
- aMatchLocales = aMatchLocales || getPreferedLocales();
-
- // Holds the best matching localized resource
- let bestmatch = null;
- // The number of locale parts it matched with
- let bestmatchcount = 0;
- // The number of locale parts in the match
- let bestpartcount = 0;
-
- for (let locale of aMatchLocales) {
- let lparts = locale.split("-");
- for (let localized of aLocales) {
- let found = localized.toLowerCase();
- // Exact match is returned immediately
- if (locale == found)
- return localized;
-
- let fparts = found.split("-");
- /* If we have found a possible match and this one isn't any longer
- then we dont need to check further. */
- if (bestmatch && fparts.length < bestmatchcount)
- continue;
-
- // Count the number of parts that match
- let maxmatchcount = Math.min(fparts.length, lparts.length);
- let matchcount = 0;
- while (matchcount < maxmatchcount &&
- fparts[matchcount] == lparts[matchcount])
- matchcount++;
-
- /* If we matched more than the last best match or matched the same and
- this locale is less specific than the last best match. */
- if (matchcount > bestmatchcount ||
- (matchcount == bestmatchcount && fparts.length < bestpartcount)) {
- bestmatch = localized;
- bestmatchcount = matchcount;
- bestpartcount = fparts.length;
- }
- }
- // If we found a valid match for this locale return it
- if (bestmatch)
- return bestmatch;
- }
- return null;
-}