1 /* 2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.util.cldr; 27 28 import java.security.AccessController; 29 import java.security.PrivilegedActionException; 30 import java.security.PrivilegedExceptionAction; 31 import java.text.spi.BreakIteratorProvider; 32 import java.text.spi.CollatorProvider; 33 import java.util.Collections; 34 import java.util.HashSet; 35 import java.util.Locale; 36 import java.util.ServiceLoader; 37 import java.util.Set; 38 import java.util.StringTokenizer; 39 import sun.util.locale.provider.JRELocaleProviderAdapter; 40 import sun.util.locale.provider.LocaleProviderAdapter; 41 import sun.util.locale.provider.LocaleDataMetaInfo; 42 43 /** 44 * LocaleProviderAdapter implementation for the CLDR locale data. 45 * 46 * @author Masayoshi Okutsu 47 * @author Naoto Sato 48 */ 49 public class CLDRLocaleProviderAdapter extends JRELocaleProviderAdapter { 50 51 private final LocaleDataMetaInfo metaInfo; 52 53 public CLDRLocaleProviderAdapter() { 54 try { 55 metaInfo = AccessController.doPrivileged(new PrivilegedExceptionAction<LocaleDataMetaInfo>() { 56 @Override 57 public LocaleDataMetaInfo run() { 58 for (LocaleDataMetaInfo ldmi : ServiceLoader.loadInstalled(LocaleDataMetaInfo.class)) { 59 if (ldmi.getType() == LocaleProviderAdapter.Type.CLDR) { 60 return ldmi; 61 } 62 } 63 return null; 64 } 65 }); 66 } catch (Exception e) { 67 // Catch any exception, and fail gracefully as if CLDR locales do not exist. 68 // It's ok ignore it if something wrong happens because there always is the 69 // JRE or FALLBACK LocaleProviderAdapter that will do the right thing. 70 throw new UnsupportedOperationException(e); 71 } 72 73 if (metaInfo == null) { 74 throw new UnsupportedOperationException("CLDR locale data could not be found."); 75 } 76 } 77 78 /** 79 * Returns the type of this LocaleProviderAdapter 80 * @return the type of this 81 */ 82 @Override 83 public LocaleProviderAdapter.Type getAdapterType() { 84 return LocaleProviderAdapter.Type.CLDR; 85 } 86 87 @Override 88 public BreakIteratorProvider getBreakIteratorProvider() { 89 return null; 90 } 91 92 @Override 93 public CollatorProvider getCollatorProvider() { 94 return null; 95 } 96 97 @Override 98 public Locale[] getAvailableLocales() { 99 Set<String> all = createLanguageTagSet("AvailableLocales"); 100 Locale[] locs = new Locale[all.size()]; 101 int index = 0; 102 for (String tag : all) { 103 locs[index++] = Locale.forLanguageTag(tag); 104 } 105 return locs; 106 } 107 108 @Override 109 protected Set<String> createLanguageTagSet(String category) { 110 String supportedLocaleString = metaInfo.availableLanguageTags(category); 111 if (supportedLocaleString == null) { 112 return Collections.emptySet(); 113 } 114 Set<String> tagset = new HashSet<>(); 115 StringTokenizer tokens = new StringTokenizer(supportedLocaleString); 116 while (tokens.hasMoreTokens()) { 117 tagset.add(tokens.nextToken()); 118 } 119 return tagset; 120 } 121 }