The Tor Browser / file comparison
comparison: addon-sdk/source/lib/sdk/l10n/locale.js
addon-sdk/source/lib/sdk/l10n/locale.js
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:7cc40f9fc256 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 "use strict"; | |
| 5 | |
| 6 module.metadata = { | |
| 7 "stability": "unstable" | |
| 8 }; | |
| 9 | |
| 10 const prefs = require("../preferences/service"); | |
| 11 const { Cu, Cc, Ci } = require("chrome"); | |
| 12 const { Services } = Cu.import("resource://gre/modules/Services.jsm"); | |
| 13 | |
| 14 /** | |
| 15 * Gets the currently selected locale for display. | |
| 16 * Gets all usable locale that we can use sorted by priority of relevance | |
| 17 * @return Array of locales, begins with highest priority | |
| 18 */ | |
| 19 const PREF_MATCH_OS_LOCALE = "intl.locale.matchOS"; | |
| 20 const PREF_SELECTED_LOCALE = "general.useragent.locale"; | |
| 21 const PREF_ACCEPT_LANGUAGES = "intl.accept_languages"; | |
| 22 | |
| 23 function getPreferedLocales(caseSensitve) { | |
| 24 let locales = []; | |
| 25 function addLocale(locale) { | |
| 26 locale = locale.trim(); | |
| 27 if (!caseSensitve) | |
| 28 locale = locale.toLowerCase(); | |
| 29 if (locales.indexOf(locale) === -1) | |
| 30 locales.push(locale); | |
| 31 } | |
| 32 | |
| 33 // Most important locale is OS one. But we use it, only if | |
| 34 // "intl.locale.matchOS" pref is set to `true`. | |
| 35 // Currently only used for multi-locales mobile builds. | |
| 36 // http://mxr.mozilla.org/mozilla-central/source/mobile/android/installer/Makefile.in#46 | |
| 37 if (prefs.get(PREF_MATCH_OS_LOCALE, false)) { | |
| 38 let localeService = Cc["@mozilla.org/intl/nslocaleservice;1"]. | |
| 39 getService(Ci.nsILocaleService); | |
| 40 let osLocale = localeService.getLocaleComponentForUserAgent(); | |
| 41 addLocale(osLocale); | |
| 42 } | |
| 43 | |
| 44 // In some cases, mainly on Fennec and on Linux version, | |
| 45 // `general.useragent.locale` is a special 'localized' value, like: | |
| 46 // "chrome://global/locale/intl.properties" | |
| 47 let browserUiLocale = prefs.getLocalized(PREF_SELECTED_LOCALE, "") || | |
| 48 prefs.get(PREF_SELECTED_LOCALE, ""); | |
| 49 if (browserUiLocale) | |
| 50 addLocale(browserUiLocale); | |
| 51 | |
| 52 // Third priority is the list of locales used for web content | |
| 53 let contentLocales = prefs.get(PREF_ACCEPT_LANGUAGES, ""); | |
| 54 if (contentLocales) { | |
| 55 // This list is a string of locales seperated by commas. | |
| 56 // There is spaces after commas, so strip each item | |
| 57 for each(let locale in contentLocales.split(",")) | |
| 58 addLocale(locale.replace(/(^\s+)|(\s+$)/g, "")); | |
| 59 } | |
| 60 | |
| 61 // Finally, we ensure that en-US is the final fallback if it wasn't added | |
| 62 addLocale("en-US"); | |
| 63 | |
| 64 return locales; | |
| 65 } | |
| 66 exports.getPreferedLocales = getPreferedLocales; | |
| 67 | |
| 68 /** | |
| 69 * Selects the closest matching locale from a list of locales. | |
| 70 * | |
| 71 * @param aLocales | |
| 72 * An array of available locales | |
| 73 * @param aMatchLocales | |
| 74 * An array of prefered locales, ordered by priority. Most wanted first. | |
| 75 * Locales have to be in lowercase. | |
| 76 * If null, uses getPreferedLocales() results | |
| 77 * @return the best match for the currently selected locale | |
| 78 * | |
| 79 * Stolen from http://mxr.mozilla.org/mozilla-central/source/toolkit/mozapps/extensions/internal/XPIProvider.jsm | |
| 80 */ | |
| 81 exports.findClosestLocale = function findClosestLocale(aLocales, aMatchLocales) { | |
| 82 aMatchLocales = aMatchLocales || getPreferedLocales(); | |
| 83 | |
| 84 // Holds the best matching localized resource | |
| 85 let bestmatch = null; | |
| 86 // The number of locale parts it matched with | |
| 87 let bestmatchcount = 0; | |
| 88 // The number of locale parts in the match | |
| 89 let bestpartcount = 0; | |
| 90 | |
| 91 for each (let locale in aMatchLocales) { | |
| 92 let lparts = locale.split("-"); | |
| 93 for each (let localized in aLocales) { | |
| 94 let found = localized.toLowerCase(); | |
| 95 // Exact match is returned immediately | |
| 96 if (locale == found) | |
| 97 return localized; | |
| 98 | |
| 99 let fparts = found.split("-"); | |
| 100 /* If we have found a possible match and this one isn't any longer | |
| 101 then we dont need to check further. */ | |
| 102 if (bestmatch && fparts.length < bestmatchcount) | |
| 103 continue; | |
| 104 | |
| 105 // Count the number of parts that match | |
| 106 let maxmatchcount = Math.min(fparts.length, lparts.length); | |
| 107 let matchcount = 0; | |
| 108 while (matchcount < maxmatchcount && | |
| 109 fparts[matchcount] == lparts[matchcount]) | |
| 110 matchcount++; | |
| 111 | |
| 112 /* If we matched more than the last best match or matched the same and | |
| 113 this locale is less specific than the last best match. */ | |
| 114 if (matchcount > bestmatchcount || | |
| 115 (matchcount == bestmatchcount && fparts.length < bestpartcount)) { | |
| 116 bestmatch = localized; | |
| 117 bestmatchcount = matchcount; | |
| 118 bestpartcount = fparts.length; | |
| 119 } | |
| 120 } | |
| 121 // If we found a valid match for this locale return it | |
| 122 if (bestmatch) | |
| 123 return bestmatch; | |
| 124 } | |
| 125 return null; | |
| 126 } |
