| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.providers.contacts; |
| |
| import android.text.TextUtils; |
| import com.google.common.annotations.VisibleForTesting; |
| import java.util.Locale; |
| |
| public class LocaleSet { |
| private static final String CHINESE_LANGUAGE = Locale.CHINESE.getLanguage().toLowerCase(); |
| private static final String JAPANESE_LANGUAGE = Locale.JAPANESE.getLanguage().toLowerCase(); |
| private static final String KOREAN_LANGUAGE = Locale.KOREAN.getLanguage().toLowerCase(); |
| |
| private static class LocaleWrapper { |
| private final Locale mLocale; |
| private final String mLanguage; |
| private final boolean mLocaleIsCJK; |
| |
| private static boolean isLanguageCJK(String language) { |
| return CHINESE_LANGUAGE.equals(language) || |
| JAPANESE_LANGUAGE.equals(language) || |
| KOREAN_LANGUAGE.equals(language); |
| } |
| |
| public LocaleWrapper(Locale locale) { |
| mLocale = locale; |
| if (mLocale != null) { |
| mLanguage = mLocale.getLanguage().toLowerCase(); |
| mLocaleIsCJK = isLanguageCJK(mLanguage); |
| } else { |
| mLanguage = null; |
| mLocaleIsCJK = false; |
| } |
| } |
| |
| public boolean hasLocale() { |
| return mLocale != null; |
| } |
| |
| public Locale getLocale() { |
| return mLocale; |
| } |
| |
| public boolean isLocale(Locale locale) { |
| return mLocale == null ? (locale == null) : mLocale.equals(locale); |
| } |
| |
| public boolean isLocaleCJK() { |
| return mLocaleIsCJK; |
| } |
| |
| public boolean isLanguage(String language) { |
| return mLanguage == null ? (language == null) |
| : mLanguage.equalsIgnoreCase(language); |
| } |
| |
| public String toString() { |
| return mLocale != null ? mLocale.toLanguageTag() : "(null)"; |
| } |
| } |
| |
| public static LocaleSet getDefault() { |
| return new LocaleSet(Locale.getDefault()); |
| } |
| |
| public LocaleSet(Locale locale) { |
| this(locale, null); |
| } |
| |
| /** |
| * Returns locale set for a given set of IETF BCP-47 tags separated by ';'. |
| * BCP-47 tags are what is used by ICU 52's toLanguageTag/forLanguageTag |
| * methods to represent individual Locales: "en-US" for Locale.US, |
| * "zh-CN" for Locale.CHINA, etc. So eg "en-US;zh-CN" specifies the locale |
| * set LocaleSet(Locale.US, Locale.CHINA). |
| * |
| * @param localeString One or more BCP-47 tags separated by ';'. |
| * @return LocaleSet for specified locale string, or default set if null |
| * or unable to parse. |
| */ |
| public static LocaleSet getLocaleSet(String localeString) { |
| // Locale.toString() generates strings like "en_US" and "zh_CN_#Hans". |
| // Locale.toLanguageTag() generates strings like "en-US" and "zh-Hans-CN". |
| // We can only parse language tags. |
| if (localeString != null && localeString.indexOf('_') == -1) { |
| final String[] locales = localeString.split(";"); |
| final Locale primaryLocale = Locale.forLanguageTag(locales[0]); |
| // ICU tags undefined/unparseable locales "und" |
| if (primaryLocale != null && |
| !TextUtils.equals(primaryLocale.toLanguageTag(), "und")) { |
| if (locales.length > 1 && locales[1] != null) { |
| final Locale secondaryLocale = Locale.forLanguageTag(locales[1]); |
| if (secondaryLocale != null && |
| !TextUtils.equals(secondaryLocale.toLanguageTag(), "und")) { |
| return new LocaleSet(primaryLocale, secondaryLocale); |
| } |
| } |
| return new LocaleSet(primaryLocale); |
| } |
| } |
| return getDefault(); |
| } |
| |
| private final LocaleWrapper mPrimaryLocale; |
| private final LocaleWrapper mSecondaryLocale; |
| |
| public LocaleSet(Locale primaryLocale, Locale secondaryLocale) { |
| mPrimaryLocale = new LocaleWrapper(primaryLocale); |
| mSecondaryLocale = new LocaleWrapper( |
| mPrimaryLocale.equals(secondaryLocale) ? null : secondaryLocale); |
| } |
| |
| public LocaleSet normalize() { |
| final Locale primaryLocale = getPrimaryLocale(); |
| if (primaryLocale == null) { |
| return getDefault(); |
| } |
| Locale secondaryLocale = getSecondaryLocale(); |
| // disallow both locales with same language (redundant and/or conflicting) |
| // disallow both locales CJK (conflicting rules) |
| if (secondaryLocale == null || |
| isPrimaryLanguage(secondaryLocale.getLanguage()) || |
| (isPrimaryLocaleCJK() && isSecondaryLocaleCJK())) { |
| return new LocaleSet(primaryLocale); |
| } |
| // unnecessary to specify English as secondary locale (redundant) |
| if (isSecondaryLanguage(Locale.ENGLISH.getLanguage())) { |
| return new LocaleSet(primaryLocale); |
| } |
| return this; |
| } |
| |
| public boolean hasSecondaryLocale() { |
| return mSecondaryLocale.hasLocale(); |
| } |
| |
| public Locale getPrimaryLocale() { |
| return mPrimaryLocale.getLocale(); |
| } |
| |
| public Locale getSecondaryLocale() { |
| return mSecondaryLocale.getLocale(); |
| } |
| |
| public boolean isPrimaryLocale(Locale locale) { |
| return mPrimaryLocale.isLocale(locale); |
| } |
| |
| public boolean isSecondaryLocale(Locale locale) { |
| return mSecondaryLocale.isLocale(locale); |
| } |
| |
| private static final String SCRIPT_SIMPLIFIED_CHINESE = "Hans"; |
| private static final String SCRIPT_TRADITIONAL_CHINESE = "Hant"; |
| |
| @VisibleForTesting |
| public static boolean isLocaleSimplifiedChinese(Locale locale) { |
| // language must match |
| if (locale == null || !TextUtils.equals(locale.getLanguage(), CHINESE_LANGUAGE)) { |
| return false; |
| } |
| // script is optional but if present must match |
| if (!TextUtils.isEmpty(locale.getScript())) { |
| return locale.getScript().equals(SCRIPT_SIMPLIFIED_CHINESE); |
| } |
| // if no script, must match known country |
| return locale.equals(Locale.SIMPLIFIED_CHINESE); |
| } |
| |
| public boolean isPrimaryLocaleSimplifiedChinese() { |
| return isLocaleSimplifiedChinese(getPrimaryLocale()); |
| } |
| |
| public boolean isSecondaryLocaleSimplifiedChinese() { |
| return isLocaleSimplifiedChinese(getSecondaryLocale()); |
| } |
| |
| @VisibleForTesting |
| public static boolean isLocaleTraditionalChinese(Locale locale) { |
| // language must match |
| if (locale == null || !TextUtils.equals(locale.getLanguage(), CHINESE_LANGUAGE)) { |
| return false; |
| } |
| // script is optional but if present must match |
| if (!TextUtils.isEmpty(locale.getScript())) { |
| return locale.getScript().equals(SCRIPT_TRADITIONAL_CHINESE); |
| } |
| // if no script, must match known country |
| return locale.equals(Locale.TRADITIONAL_CHINESE); |
| } |
| |
| public boolean isPrimaryLocaleTraditionalChinese() { |
| return isLocaleTraditionalChinese(getPrimaryLocale()); |
| } |
| |
| public boolean isSecondaryLocaleTraditionalChinese() { |
| return isLocaleTraditionalChinese(getSecondaryLocale()); |
| } |
| |
| public boolean isPrimaryLocaleCJK() { |
| return mPrimaryLocale.isLocaleCJK(); |
| } |
| |
| public boolean isSecondaryLocaleCJK() { |
| return mSecondaryLocale.isLocaleCJK(); |
| } |
| |
| public boolean isPrimaryLanguage(String language) { |
| return mPrimaryLocale.isLanguage(language); |
| } |
| |
| public boolean isSecondaryLanguage(String language) { |
| return mSecondaryLocale.isLanguage(language); |
| } |
| |
| @Override |
| public boolean equals(Object object) { |
| if (object == this) { |
| return true; |
| } |
| if (object instanceof LocaleSet) { |
| final LocaleSet other = (LocaleSet) object; |
| return other.isPrimaryLocale(mPrimaryLocale.getLocale()) |
| && other.isSecondaryLocale(mSecondaryLocale.getLocale()); |
| } |
| return false; |
| } |
| |
| @Override |
| public final String toString() { |
| StringBuilder builder = new StringBuilder(); |
| builder.append(mPrimaryLocale.toString()); |
| if (hasSecondaryLocale()) { |
| builder.append(";"); |
| builder.append(mSecondaryLocale.toString()); |
| } |
| return builder.toString(); |
| } |
| } |