| /* |
| * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.util.locale.provider; |
| |
| import java.text.spi.BreakIteratorProvider; |
| import java.text.spi.CollatorProvider; |
| import java.text.spi.DateFormatProvider; |
| import java.text.spi.DateFormatSymbolsProvider; |
| import java.text.spi.DecimalFormatSymbolsProvider; |
| import java.text.spi.NumberFormatProvider; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.ResourceBundle; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.spi.CalendarDataProvider; |
| import java.util.spi.CalendarNameProvider; |
| import java.util.spi.CurrencyNameProvider; |
| import java.util.spi.LocaleNameProvider; |
| import java.util.spi.LocaleServiceProvider; |
| import java.util.spi.TimeZoneNameProvider; |
| import sun.security.action.GetPropertyAction; |
| import sun.util.spi.CalendarProvider; |
| |
| /** |
| * The LocaleProviderAdapter abstract class. |
| * |
| * @author Naoto Sato |
| * @author Masayoshi Okutsu |
| */ |
| public abstract class LocaleProviderAdapter { |
| /** |
| * Adapter type. |
| */ |
| public static enum Type { |
| JRE("sun.util.locale.provider.JRELocaleProviderAdapter", "sun.util.resources", "sun.text.resources"), |
| CLDR("sun.util.cldr.CLDRLocaleProviderAdapter", "sun.util.resources.cldr", "sun.text.resources.cldr"), |
| SPI("sun.util.locale.provider.SPILocaleProviderAdapter"), |
| HOST("sun.util.locale.provider.HostLocaleProviderAdapter"), |
| FALLBACK("sun.util.locale.provider.FallbackLocaleProviderAdapter", "sun.util.resources", "sun.text.resources"); |
| |
| private final String CLASSNAME; |
| private final String UTIL_RESOURCES_PACKAGE; |
| private final String TEXT_RESOURCES_PACKAGE; |
| |
| private Type(String className) { |
| this(className, null, null); |
| } |
| |
| private Type(String className, String util, String text) { |
| CLASSNAME = className; |
| UTIL_RESOURCES_PACKAGE = util; |
| TEXT_RESOURCES_PACKAGE = text; |
| } |
| |
| public String getAdapterClassName() { |
| return CLASSNAME; |
| } |
| |
| public String getUtilResourcesPackage() { |
| return UTIL_RESOURCES_PACKAGE; |
| } |
| |
| public String getTextResourcesPackage() { |
| return TEXT_RESOURCES_PACKAGE; |
| } |
| } |
| |
| /** |
| * LocaleProviderAdapter preference list. |
| */ |
| private static final List<Type> adapterPreference; |
| |
| /** |
| * LocaleProviderAdapter instances |
| */ |
| private static final Map<Type, LocaleProviderAdapter> adapterInstances = new ConcurrentHashMap<>(); |
| |
| /** |
| * Default fallback adapter type, which should return something meaningful in any case. |
| * This is either CLDR or FALLBACK. |
| */ |
| static volatile LocaleProviderAdapter.Type defaultLocaleProviderAdapter; |
| |
| /** |
| * Adapter lookup cache. |
| */ |
| private static ConcurrentMap<Class<? extends LocaleServiceProvider>, ConcurrentMap<Locale, LocaleProviderAdapter>> |
| adapterCache = new ConcurrentHashMap<>(); |
| |
| static { |
| String order = GetPropertyAction.getProperty("java.locale.providers"); |
| List<Type> typeList = new ArrayList<>(); |
| |
| // Check user specified adapter preference |
| if (order != null && order.length() != 0) { |
| String[] types = order.split(","); |
| for (String type : types) { |
| type = type.trim().toUpperCase(Locale.ROOT); |
| if (type.equals("COMPAT")) { |
| type = "JRE"; |
| } |
| try { |
| Type aType = Type.valueOf(type.trim().toUpperCase(Locale.ROOT)); |
| if (!typeList.contains(aType)) { |
| typeList.add(aType); |
| } |
| } catch (IllegalArgumentException | UnsupportedOperationException e) { |
| // could be caused by the user specifying wrong |
| // provider name or format in the system property |
| LocaleServiceProviderPool.config(LocaleProviderAdapter.class, e.toString()); |
| } |
| } |
| } |
| |
| defaultLocaleProviderAdapter = Type.CLDR; |
| if (!typeList.isEmpty()) { |
| // bona fide preference exists |
| if (!typeList.contains(Type.CLDR)) { |
| // Append FALLBACK as the last resort. |
| typeList.add(Type.FALLBACK); |
| defaultLocaleProviderAdapter = Type.FALLBACK; |
| } |
| } else { |
| // Default preference list. |
| typeList.add(Type.CLDR); |
| typeList.add(Type.JRE); |
| } |
| adapterPreference = Collections.unmodifiableList(typeList); |
| } |
| |
| /** |
| * Returns the singleton instance for each adapter type |
| */ |
| public static LocaleProviderAdapter forType(Type type) { |
| switch (type) { |
| case JRE: |
| case CLDR: |
| case SPI: |
| case HOST: |
| case FALLBACK: |
| LocaleProviderAdapter adapter = null; |
| LocaleProviderAdapter cached = adapterInstances.get(type); |
| if (cached == null) { |
| try { |
| // lazily load adapters here |
| adapter = (LocaleProviderAdapter)Class.forName(type.getAdapterClassName()) |
| .newInstance(); |
| cached = adapterInstances.putIfAbsent(type, adapter); |
| if (cached != null) { |
| adapter = cached; |
| } |
| } catch (ClassNotFoundException | |
| IllegalAccessException | |
| InstantiationException | |
| UnsupportedOperationException e) { |
| LocaleServiceProviderPool.config(LocaleProviderAdapter.class, e.toString()); |
| adapterInstances.putIfAbsent(type, NONEXISTENT_ADAPTER); |
| if (defaultLocaleProviderAdapter == type) { |
| defaultLocaleProviderAdapter = Type.FALLBACK; |
| } |
| } |
| } else if (cached != NONEXISTENT_ADAPTER) { |
| adapter = cached; |
| } |
| return adapter; |
| default: |
| throw new InternalError("unknown locale data adapter type"); |
| } |
| } |
| |
| public static LocaleProviderAdapter forJRE() { |
| return forType(Type.JRE); |
| } |
| |
| public static LocaleProviderAdapter getResourceBundleBased() { |
| for (Type type : getAdapterPreference()) { |
| if (type == Type.JRE || type == Type.CLDR || type == Type.FALLBACK) { |
| LocaleProviderAdapter adapter = forType(type); |
| if (adapter != null) { |
| return adapter; |
| } |
| } |
| } |
| // Shouldn't happen. |
| throw new InternalError(); |
| } |
| |
| /** |
| * Returns the preference order of LocaleProviderAdapter.Type |
| */ |
| public static List<Type> getAdapterPreference() { |
| return adapterPreference; |
| } |
| |
| /** |
| * Returns a LocaleProviderAdapter for the given locale service provider that |
| * best matches the given locale. This method returns the LocaleProviderAdapter |
| * for JRE if none is found for the given locale. |
| * |
| * @param providerClass the class for the locale service provider |
| * @param locale the desired locale. |
| * @return a LocaleProviderAdapter |
| */ |
| public static LocaleProviderAdapter getAdapter(Class<? extends LocaleServiceProvider> providerClass, |
| Locale locale) { |
| LocaleProviderAdapter adapter; |
| |
| // cache lookup |
| ConcurrentMap<Locale, LocaleProviderAdapter> adapterMap = adapterCache.get(providerClass); |
| if (adapterMap != null) { |
| if ((adapter = adapterMap.get(locale)) != null) { |
| return adapter; |
| } |
| } else { |
| adapterMap = new ConcurrentHashMap<>(); |
| adapterCache.putIfAbsent(providerClass, adapterMap); |
| } |
| |
| // Fast look-up for the given locale |
| adapter = findAdapter(providerClass, locale); |
| if (adapter != null) { |
| adapterMap.putIfAbsent(locale, adapter); |
| return adapter; |
| } |
| |
| // Try finding an adapter in the normal candidate locales path of the given locale. |
| List<Locale> lookupLocales = ResourceBundle.Control.getControl(ResourceBundle.Control.FORMAT_DEFAULT) |
| .getCandidateLocales("", locale); |
| for (Locale loc : lookupLocales) { |
| if (loc.equals(locale)) { |
| // We've already done with this loc. |
| continue; |
| } |
| adapter = findAdapter(providerClass, loc); |
| if (adapter != null) { |
| adapterMap.putIfAbsent(locale, adapter); |
| return adapter; |
| } |
| } |
| |
| // returns the adapter for FALLBACK as the last resort |
| adapterMap.putIfAbsent(locale, forType(Type.FALLBACK)); |
| return forType(Type.FALLBACK); |
| } |
| |
| private static LocaleProviderAdapter findAdapter(Class<? extends LocaleServiceProvider> providerClass, |
| Locale locale) { |
| for (Type type : getAdapterPreference()) { |
| LocaleProviderAdapter adapter = forType(type); |
| if (adapter != null) { |
| LocaleServiceProvider provider = adapter.getLocaleServiceProvider(providerClass); |
| if (provider != null) { |
| if (provider.isSupportedLocale(locale)) { |
| return adapter; |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * A utility method for implementing the default LocaleServiceProvider.isSupportedLocale |
| * for the JRE, CLDR, and FALLBACK adapters. |
| */ |
| public boolean isSupportedProviderLocale(Locale locale, Set<String> langtags) { |
| LocaleProviderAdapter.Type type = getAdapterType(); |
| assert type == Type.JRE || type == Type.CLDR || type == Type.FALLBACK; |
| return false; |
| } |
| |
| public static Locale[] toLocaleArray(Set<String> tags) { |
| Locale[] locs = new Locale[tags.size() + 1]; |
| int index = 0; |
| locs[index++] = Locale.ROOT; |
| for (String tag : tags) { |
| switch (tag) { |
| case "ja-JP-JP": |
| locs[index++] = JRELocaleConstants.JA_JP_JP; |
| break; |
| case "th-TH-TH": |
| locs[index++] = JRELocaleConstants.TH_TH_TH; |
| break; |
| default: |
| locs[index++] = Locale.forLanguageTag(tag); |
| break; |
| } |
| } |
| return locs; |
| } |
| |
| /** |
| * Returns the type of this LocaleProviderAdapter |
| */ |
| public abstract LocaleProviderAdapter.Type getAdapterType(); |
| |
| /** |
| * Getter method for Locale Service Providers. |
| */ |
| public abstract <P extends LocaleServiceProvider> P getLocaleServiceProvider(Class<P> c); |
| |
| /** |
| * Returns a BreakIteratorProvider for this LocaleProviderAdapter, or null if no |
| * BreakIteratorProvider is available. |
| * |
| * @return a BreakIteratorProvider |
| */ |
| public abstract BreakIteratorProvider getBreakIteratorProvider(); |
| |
| /** |
| * Returns a ollatorProvider for this LocaleProviderAdapter, or null if no |
| * ollatorProvider is available. |
| * |
| * @return a ollatorProvider |
| */ |
| public abstract CollatorProvider getCollatorProvider(); |
| |
| /** |
| * Returns a DateFormatProvider for this LocaleProviderAdapter, or null if no |
| * DateFormatProvider is available. |
| * |
| * @return a DateFormatProvider |
| */ |
| public abstract DateFormatProvider getDateFormatProvider(); |
| |
| /** |
| * Returns a DateFormatSymbolsProvider for this LocaleProviderAdapter, or null if no |
| * DateFormatSymbolsProvider is available. |
| * |
| * @return a DateFormatSymbolsProvider |
| */ |
| public abstract DateFormatSymbolsProvider getDateFormatSymbolsProvider(); |
| |
| /** |
| * Returns a DecimalFormatSymbolsProvider for this LocaleProviderAdapter, or null if no |
| * DecimalFormatSymbolsProvider is available. |
| * |
| * @return a DecimalFormatSymbolsProvider |
| */ |
| public abstract DecimalFormatSymbolsProvider getDecimalFormatSymbolsProvider(); |
| |
| /** |
| * Returns a NumberFormatProvider for this LocaleProviderAdapter, or null if no |
| * NumberFormatProvider is available. |
| * |
| * @return a NumberFormatProvider |
| */ |
| public abstract NumberFormatProvider getNumberFormatProvider(); |
| |
| /* |
| * Getter methods for java.util.spi.* providers |
| */ |
| |
| /** |
| * Returns a CurrencyNameProvider for this LocaleProviderAdapter, or null if no |
| * CurrencyNameProvider is available. |
| * |
| * @return a CurrencyNameProvider |
| */ |
| public abstract CurrencyNameProvider getCurrencyNameProvider(); |
| |
| /** |
| * Returns a LocaleNameProvider for this LocaleProviderAdapter, or null if no |
| * LocaleNameProvider is available. |
| * |
| * @return a LocaleNameProvider |
| */ |
| public abstract LocaleNameProvider getLocaleNameProvider(); |
| |
| /** |
| * Returns a TimeZoneNameProvider for this LocaleProviderAdapter, or null if no |
| * TimeZoneNameProvider is available. |
| * |
| * @return a TimeZoneNameProvider |
| */ |
| public abstract TimeZoneNameProvider getTimeZoneNameProvider(); |
| |
| /** |
| * Returns a CalendarDataProvider for this LocaleProviderAdapter, or null if no |
| * CalendarDataProvider is available. |
| * |
| * @return a CalendarDataProvider |
| */ |
| public abstract CalendarDataProvider getCalendarDataProvider(); |
| |
| /** |
| * Returns a CalendarNameProvider for this LocaleProviderAdapter, or null if no |
| * CalendarNameProvider is available. |
| * |
| * @return a CalendarNameProvider |
| */ |
| public abstract CalendarNameProvider getCalendarNameProvider(); |
| |
| /** |
| * Returns a CalendarProvider for this LocaleProviderAdapter, or null if no |
| * CalendarProvider is available. |
| * |
| * @return a CalendarProvider |
| */ |
| public abstract CalendarProvider getCalendarProvider(); |
| |
| public abstract LocaleResources getLocaleResources(Locale locale); |
| |
| public abstract Locale[] getAvailableLocales(); |
| |
| private static final LocaleProviderAdapter NONEXISTENT_ADAPTER = new NonExistentAdapter(); |
| private static final class NonExistentAdapter extends FallbackLocaleProviderAdapter { |
| @Override |
| public LocaleProviderAdapter.Type getAdapterType() { |
| return null; |
| } |
| |
| private NonExistentAdapter() {}; |
| } |
| } |