1 /*
   2  * Copyright (c) 2012, 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.io.File;
  29 import java.security.AccessController;
  30 import java.security.PrivilegedAction;
  31 import java.text.spi.BreakIteratorProvider;
  32 import java.text.spi.CollatorProvider;
  33 import java.util.HashSet;
  34 import java.util.Locale;
  35 import java.util.ResourceBundle;
  36 import java.util.Set;
  37 import java.util.StringTokenizer;
  38 import java.util.spi.TimeZoneNameProvider;
  39 import sun.util.locale.provider.JRELocaleProviderAdapter;
  40 import sun.util.locale.provider.LocaleProviderAdapter;
  41 
  42 /**
  43  * LocaleProviderAdapter implementation for the CLDR locale data.
  44  *
  45  * @author Masayoshi Okutsu
  46  * @author Naoto Sato
  47  */
  48 public class CLDRLocaleProviderAdapter extends JRELocaleProviderAdapter {
  49     private static final String LOCALE_DATA_JAR_NAME = "cldrdata.jar";
  50 
  51     public CLDRLocaleProviderAdapter() {
  52         final String sep = File.separator;
  53         String localeDataJar = java.security.AccessController.doPrivileged(
  54                     new sun.security.action.GetPropertyAction("java.home"))
  55                 + sep + "lib" + sep + "ext" + sep + LOCALE_DATA_JAR_NAME;
  56 
  57         // Peek at the installed extension directory to see if the jar file for
  58         // CLDR resources is installed or not.
  59         final File f = new File(localeDataJar);
  60         boolean result = AccessController.doPrivileged(
  61                 new PrivilegedAction<Boolean>() {
  62                     @Override
  63                     public Boolean run() {
  64                         return f.exists();
  65                     }
  66                 });
  67         if (!result) {
  68             throw new UnsupportedOperationException();
  69         }
  70     }
  71 
  72     /**
  73      * Returns the type of this LocaleProviderAdapter
  74      * @return the type of this
  75      */
  76     @Override
  77     public LocaleProviderAdapter.Type getAdapterType() {
  78         return LocaleProviderAdapter.Type.CLDR;
  79     }
  80 
  81     @Override
  82     public BreakIteratorProvider getBreakIteratorProvider() {
  83         return null;
  84     }
  85 
  86     @Override
  87     public CollatorProvider getCollatorProvider() {
  88         return null;
  89     }
  90 
  91     @Override
  92     public Locale[] getAvailableLocales() {
  93         Set<String> all = createLanguageTagSet("All");
  94         Locale[] locs = new Locale[all.size()];
  95         int index = 0;
  96         for (String tag : all) {
  97             locs[index++] = Locale.forLanguageTag(tag);
  98         }
  99         return locs;
 100     }
 101 
 102     @Override
 103     protected Set<String> createLanguageTagSet(String category) {
 104         ResourceBundle rb = ResourceBundle.getBundle("sun.util.cldr.CLDRLocaleDataMetaInfo", Locale.ROOT);
 105         String supportedLocaleString = rb.getString(category);
 106         Set<String> tagset = new HashSet<>();
 107         StringTokenizer tokens = new StringTokenizer(supportedLocaleString);
 108         while (tokens.hasMoreTokens()) {
 109             tagset.add(tokens.nextToken());
 110         }
 111         return tagset;
 112     }
 113 }