| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package org.chromium.base; |
| |
| import android.annotation.TargetApi; |
| import android.os.Build; |
| import android.os.LocaleList; |
| import android.text.TextUtils; |
| |
| import org.chromium.base.annotations.CalledByNative; |
| |
| import java.util.ArrayList; |
| import java.util.Locale; |
| |
| /** |
| * This class provides the locale related methods. |
| */ |
| public class LocaleUtils { |
| /** |
| * Guards this class from being instantiated. |
| */ |
| private LocaleUtils() { |
| } |
| |
| /** |
| * Java keeps deprecated language codes for Hebrew, Yiddish and Indonesian but Chromium uses |
| * updated ones. Similarly, Android uses "tl" while Chromium uses "fil" for Tagalog/Filipino. |
| * So apply a mapping here. |
| * See http://developer.android.com/reference/java/util/Locale.html |
| * @return a updated language code for Chromium with given language string. |
| */ |
| public static String getUpdatedLanguageForChromium(String language) { |
| // IMPORTANT: Keep in sync with the mapping found in: |
| // build/android/gyp/util/resource_utils.py |
| switch (language) { |
| case "iw": |
| return "he"; // Hebrew |
| case "ji": |
| return "yi"; // Yiddish |
| case "in": |
| return "id"; // Indonesian |
| case "tl": |
| return "fil"; // Filipino |
| default: |
| return language; |
| } |
| } |
| |
| /** |
| * @return a locale with updated language codes for Chromium, with translated modern language |
| * codes used by Chromium. |
| */ |
| @TargetApi(Build.VERSION_CODES.LOLLIPOP) |
| @VisibleForTesting |
| public static Locale getUpdatedLocaleForChromium(Locale locale) { |
| String language = locale.getLanguage(); |
| String languageForChrome = getUpdatedLanguageForChromium(language); |
| if (languageForChrome.equals(language)) { |
| return locale; |
| } |
| return new Locale.Builder().setLocale(locale).setLanguage(languageForChrome).build(); |
| } |
| |
| /** |
| * Android uses "tl" while Chromium uses "fil" for Tagalog/Filipino. |
| * So apply a mapping here. |
| * See http://developer.android.com/reference/java/util/Locale.html |
| * @return a updated language code for Android with given language string. |
| */ |
| public static String getUpdatedLanguageForAndroid(String language) { |
| // IMPORTANT: Keep in sync with the mapping found in: |
| // build/android/gyp/util/resource_utils.py |
| switch (language) { |
| case "und": |
| return ""; // Undefined |
| case "fil": |
| return "tl"; // Filipino |
| default: |
| return language; |
| } |
| } |
| |
| /** |
| * @return a locale with updated language codes for Android, from translated modern language |
| * codes used by Chromium. |
| */ |
| @TargetApi(Build.VERSION_CODES.LOLLIPOP) |
| @VisibleForTesting |
| public static Locale getUpdatedLocaleForAndroid(Locale locale) { |
| String language = locale.getLanguage(); |
| String languageForAndroid = getUpdatedLanguageForAndroid(language); |
| if (languageForAndroid.equals(language)) { |
| return locale; |
| } |
| return new Locale.Builder().setLocale(locale).setLanguage(languageForAndroid).build(); |
| } |
| |
| /** |
| * This function creates a Locale object from xx-XX style string where xx is language code |
| * and XX is a country code. This works for API level lower than 21. |
| * @return the locale that best represents the language tag. |
| */ |
| public static Locale forLanguageTagCompat(String languageTag) { |
| String[] tag = languageTag.split("-"); |
| if (tag.length == 0) { |
| return new Locale(""); |
| } |
| String language = getUpdatedLanguageForAndroid(tag[0]); |
| if ((language.length() != 2 && language.length() != 3)) { |
| return new Locale(""); |
| } |
| if (tag.length == 1) { |
| return new Locale(language); |
| } |
| String country = tag[1]; |
| if (country.length() != 2 && country.length() != 3) { |
| return new Locale(language); |
| } |
| return new Locale(language, country); |
| } |
| |
| /** |
| * This function creates a Locale object from xx-XX style string where xx is language code |
| * and XX is a country code. |
| * @return the locale that best represents the language tag. |
| */ |
| public static Locale forLanguageTag(String languageTag) { |
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { |
| Locale locale = Locale.forLanguageTag(languageTag); |
| return getUpdatedLocaleForAndroid(locale); |
| } |
| return forLanguageTagCompat(languageTag); |
| } |
| |
| /** |
| * Converts Locale object to the BCP 47 compliant string format. |
| * This works for API level lower than 24. |
| * |
| * Note that for Android M or before, we cannot use Locale.getLanguage() and |
| * Locale.toLanguageTag() for this purpose. Since Locale.getLanguage() returns deprecated |
| * language code even if the Locale object is constructed with updated language code. As for |
| * Locale.toLanguageTag(), it does a special conversion from deprecated language code to updated |
| * one, but it is only usable for Android N or after. |
| * @return a well-formed IETF BCP 47 language tag with language and country code that |
| * represents this locale. |
| */ |
| public static String toLanguageTag(Locale locale) { |
| String language = getUpdatedLanguageForChromium(locale.getLanguage()); |
| String country = locale.getCountry(); |
| if (language.equals("no") && country.equals("NO") && locale.getVariant().equals("NY")) { |
| return "nn-NO"; |
| } |
| return country.isEmpty() ? language : language + "-" + country; |
| } |
| |
| /** |
| * Converts LocaleList object to the comma separated BCP 47 compliant string format. |
| * |
| * @return a well-formed IETF BCP 47 language tag with language and country code that |
| * represents this locale list. |
| */ |
| @TargetApi(Build.VERSION_CODES.N) |
| public static String toLanguageTags(LocaleList localeList) { |
| ArrayList<String> newLocaleList = new ArrayList<>(); |
| for (int i = 0; i < localeList.size(); i++) { |
| Locale locale = getUpdatedLocaleForChromium(localeList.get(i)); |
| newLocaleList.add(toLanguageTag(locale)); |
| } |
| return TextUtils.join(",", newLocaleList); |
| } |
| |
| /** |
| * @return a comma separated language tags string that represents a default locale. |
| * Each language tag is well-formed IETF BCP 47 language tag with language and country |
| * code. |
| */ |
| @CalledByNative |
| public static String getDefaultLocaleString() { |
| return toLanguageTag(Locale.getDefault()); |
| } |
| |
| /** |
| * @return a comma separated language tags string that represents a default locale or locales. |
| * Each language tag is well-formed IETF BCP 47 language tag with language and country |
| * code. |
| */ |
| public static String getDefaultLocaleListString() { |
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { |
| return toLanguageTags(LocaleList.getDefault()); |
| } |
| return getDefaultLocaleString(); |
| } |
| |
| /** |
| * @return The default country code set during install. |
| */ |
| @CalledByNative |
| private static String getDefaultCountryCode() { |
| CommandLine commandLine = CommandLine.getInstance(); |
| return commandLine.hasSwitch(BaseSwitches.DEFAULT_COUNTRY_CODE_AT_INSTALL) |
| ? commandLine.getSwitchValue(BaseSwitches.DEFAULT_COUNTRY_CODE_AT_INSTALL) |
| : Locale.getDefault().getCountry(); |
| } |
| |
| } |