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/*
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* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.util.locale.provider;
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import java.security.AccessController;
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import java.text.spi.BreakIteratorProvider;
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import java.text.spi.CollatorProvider;
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import java.text.spi.DateFormatProvider;
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import java.text.spi.DateFormatSymbolsProvider;
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import java.text.spi.DecimalFormatSymbolsProvider;
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import java.text.spi.NumberFormatProvider;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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import java.util.ResourceBundle;
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import java.util.Set;
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import java.util.spi.CalendarDataProvider;
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import java.util.spi.CurrencyNameProvider;
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import java.util.spi.LocaleNameProvider;
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import java.util.spi.LocaleServiceProvider;
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import java.util.spi.TimeZoneNameProvider;
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import sun.util.cldr.CLDRLocaleProviderAdapter;
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import sun.util.resources.LocaleData;
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/**
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* The LocaleProviderAdapter abstract class.
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*
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* @author Naoto Sato
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* @author Masayoshi Okutsu
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*/
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public abstract class LocaleProviderAdapter {
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/**
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* Adapter type.
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*/
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public static enum Type {
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JRE("sun.util.resources", "sun.text.resources"),
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CLDR("sun.util.resources.cldr", "sun.text.resources.cldr"),
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SPI,
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HOST;
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private final String UTIL_RESOURCES_PACKAGE;
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private final String TEXT_RESOURCES_PACKAGE;
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private Type() {
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this(null, null);
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}
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private Type(String util, String text) {
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UTIL_RESOURCES_PACKAGE = util;
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TEXT_RESOURCES_PACKAGE = text;
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}
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public String getUtilResourcesPackage() {
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return UTIL_RESOURCES_PACKAGE;
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}
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public String getTextResourcesPackage() {
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return TEXT_RESOURCES_PACKAGE;
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}
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}
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/**
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* LocaleProviderAdapter preference list. The default list is intended
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* to behave the same manner in JDK7.
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*/
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private static Type[] adapterPreference = {
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Type.JRE,
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Type.SPI,
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};
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/**
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* JRE Locale Data Adapter instance
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*/
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private static LocaleProviderAdapter jreLocaleProviderAdapter = new JRELocaleProviderAdapter();
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/**
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* SPI Locale Data Adapter instance
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*/
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private static LocaleProviderAdapter spiLocaleProviderAdapter = new SPILocaleProviderAdapter();
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/**
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* CLDR Locale Data Adapter instance, if any.
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*/
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private static LocaleProviderAdapter cldrLocaleProviderAdapter = null;
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/**
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* HOST Locale Data Adapter instance, if any.
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*/
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private static LocaleProviderAdapter hostLocaleProviderAdapter = null;
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static {
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String order = AccessController.doPrivileged(
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new sun.security.action.GetPropertyAction("java.locale.providers"));
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// Override adapterPreference with the properties one
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if (order != null && order.length() != 0) {
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String[] types = order.split(",");
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List<Type> typeList = new ArrayList<>();
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for (String type : types) {
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try {
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Type aType = Type.valueOf(type.trim().toUpperCase(Locale.ROOT));
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// load adapter if necessary
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switch (aType) {
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case CLDR:
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cldrLocaleProviderAdapter = new CLDRLocaleProviderAdapter();
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break;
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case HOST:
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hostLocaleProviderAdapter = new HostLocaleProviderAdapter();
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break;
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}
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typeList.add(aType);
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} catch (// could be caused by the user specifying wrong
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// provider name or format in the system property
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IllegalArgumentException |
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UnsupportedOperationException e) {
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LocaleServiceProviderPool.config(LocaleProviderAdapter.class, e.toString());
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}
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}
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if (!typeList.contains(Type.JRE)) {
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// Append JRE as the last resort.
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typeList.add(Type.JRE);
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}
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adapterPreference = typeList.toArray(new Type[0]);
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}
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}
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/**
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* Returns the singleton instance for each adapter type
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*/
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public static LocaleProviderAdapter forType(Type type) {
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switch (type) {
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case JRE:
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return jreLocaleProviderAdapter;
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case CLDR:
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return cldrLocaleProviderAdapter;
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case SPI:
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return spiLocaleProviderAdapter;
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case HOST:
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return hostLocaleProviderAdapter;
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default:
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throw new InternalError("unknown locale data adapter type");
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}
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}
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public static LocaleProviderAdapter forJRE() {
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return jreLocaleProviderAdapter;
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}
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public static LocaleProviderAdapter getResourceBundleBased() {
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for (Type type : getAdapterPreference()) {
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if (type == Type.JRE || type == Type.CLDR) {
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return forType(type);
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}
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}
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// Shouldn't happen.
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throw new InternalError();
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}
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/**
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* Returns the preference order of LocaleProviderAdapter.Type
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*/
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public static Type[] getAdapterPreference() {
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return adapterPreference;
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}
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/**
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* Returns a LocaleProviderAdapter for the given locale service provider that
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* best matches the given locale. This method returns the LocaleProviderAdapter
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* for JRE if none is found for the given locale.
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*
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* @param providerClass the class for the locale service provider
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* @param locale the desired locale.
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* @return a LocaleProviderAdapter
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*/
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public static LocaleProviderAdapter getAdapter(Class<? extends LocaleServiceProvider> providerClass,
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Locale locale) {
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// Fast look-up for the given locale
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LocaleProviderAdapter adapter = findAdapter(providerClass, locale);
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if (adapter != null) {
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return adapter;
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}
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// Try finding an adapter in the normal candidate locales path of the given locale.
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List<Locale> lookupLocales = ResourceBundle.Control.getControl(ResourceBundle.Control.FORMAT_DEFAULT)
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.getCandidateLocales("", locale);
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for (Locale loc : lookupLocales) {
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if (loc.equals(locale)) {
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// We've already done with this loc.
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continue;
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}
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adapter = findAdapter(providerClass, loc);
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if (adapter != null) {
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return adapter;
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}
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}
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// returns the adapter for JRE as the last resort
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return jreLocaleProviderAdapter;
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}
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private static LocaleProviderAdapter findAdapter(Class<? extends LocaleServiceProvider> providerClass,
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Locale locale) {
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for (Type type : getAdapterPreference()) {
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LocaleProviderAdapter adapter = forType(type);
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LocaleServiceProvider provider = adapter.getLocaleServiceProvider(providerClass);
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if (provider != null) {
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if (provider.isSupportedLocale(locale)) {
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return adapter;
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}
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}
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}
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return null;
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}
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/**
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* A utility method for implementing the default LocaleServiceProvider.isSupportedLocale
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* for the JRE and CLDR adapters.
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*/
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static boolean isSupportedLocale(Locale locale, LocaleProviderAdapter.Type type, Set<String> langtags) {
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assert type == Type.JRE || type == Type.CLDR;
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if (locale == Locale.ROOT) {
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return true;
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}
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locale = locale.stripExtensions();
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if (langtags.contains(locale.toLanguageTag())) {
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return true;
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}
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if (type == LocaleProviderAdapter.Type.JRE) {
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String oldname = locale.toString().replace('_', '-');
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return langtags.contains(oldname);
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}
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return false;
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}
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public static Locale[] toLocaleArray(Set<String> tags) {
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Locale[] locs = new Locale[tags.size() + 1];
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int index = 0;
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locs[index++] = Locale.ROOT;
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for (String tag : tags) {
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switch (tag) {
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case "ja-JP-JP":
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locs[index++] = JRELocaleConstants.JA_JP_JP;
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break;
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case "th-TH-TH":
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locs[index++] = JRELocaleConstants.TH_TH_TH;
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break;
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default:
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locs[index++] = Locale.forLanguageTag(tag);
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break;
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}
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}
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return locs;
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}
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/**
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* Returns the type of this LocaleProviderAdapter
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*/
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public abstract LocaleProviderAdapter.Type getAdapterType();
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/**
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* Getter method for Locale Service Providers.
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*/
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public abstract <P extends LocaleServiceProvider> P getLocaleServiceProvider(Class<P> c);
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/**
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* Returns a BreakIteratorProvider for this LocaleProviderAdapter, or null if no
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* BreakIteratorProvider is available.
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*
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* @return a BreakIteratorProvider
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*/
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public abstract BreakIteratorProvider getBreakIteratorProvider();
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/**
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* Returns a ollatorProvider for this LocaleProviderAdapter, or null if no
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* ollatorProvider is available.
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*
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* @return a ollatorProvider
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*/
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public abstract CollatorProvider getCollatorProvider();
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/**
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* Returns a DateFormatProvider for this LocaleProviderAdapter, or null if no
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* DateFormatProvider is available.
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*
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* @return a DateFormatProvider
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*/
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public abstract DateFormatProvider getDateFormatProvider();
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/**
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* Returns a DateFormatSymbolsProvider for this LocaleProviderAdapter, or null if no
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* DateFormatSymbolsProvider is available.
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*
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* @return a DateFormatSymbolsProvider
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*/
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public abstract DateFormatSymbolsProvider getDateFormatSymbolsProvider();
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/**
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* Returns a DecimalFormatSymbolsProvider for this LocaleProviderAdapter, or null if no
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* DecimalFormatSymbolsProvider is available.
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*
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* @return a DecimalFormatSymbolsProvider
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*/
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public abstract DecimalFormatSymbolsProvider getDecimalFormatSymbolsProvider();
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/**
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* Returns a NumberFormatProvider for this LocaleProviderAdapter, or null if no
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* NumberFormatProvider is available.
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*
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* @return a NumberFormatProvider
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*/
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public abstract NumberFormatProvider getNumberFormatProvider();
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/*
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* Getter methods for java.util.spi.* providers
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*/
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/**
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* Returns a CurrencyNameProvider for this LocaleProviderAdapter, or null if no
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* CurrencyNameProvider is available.
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*
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* @return a CurrencyNameProvider
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*/
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public abstract CurrencyNameProvider getCurrencyNameProvider();
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/**
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* Returns a LocaleNameProvider for this LocaleProviderAdapter, or null if no
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* LocaleNameProvider is available.
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*
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* @return a LocaleNameProvider
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*/
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public abstract LocaleNameProvider getLocaleNameProvider();
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/**
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* Returns a TimeZoneNameProvider for this LocaleProviderAdapter, or null if no
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* TimeZoneNameProvider is available.
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*
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* @return a TimeZoneNameProvider
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*/
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public abstract TimeZoneNameProvider getTimeZoneNameProvider();
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/**
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* Returns a CalendarDataProvider for this LocaleProviderAdapter, or null if no
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* CalendarDataProvider is available.
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*
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* @return a CalendarDataProvider
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*/
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public abstract CalendarDataProvider getCalendarDataProvider();
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public abstract LocaleResources getLocaleResources(Locale locale);
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public abstract LocaleData getLocaleData();
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public abstract Locale[] getAvailableLocales();
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}
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