1 /*
   2  * Copyright (c) 2018, 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 static sun.util.locale.provider.LocaleProviderAdapter.Type;
  29 
  30 import java.util.Locale;
  31 import java.util.Set;
  32 import sun.util.locale.provider.AvailableLanguageTags;
  33 import sun.util.locale.provider.CalendarNameProviderImpl;
  34 import sun.util.locale.provider.LocaleProviderAdapter;
  35 
  36 
  37 public class CLDRCalendarNameProviderImpl extends CalendarNameProviderImpl implements AvailableLanguageTags{
  38 
  39     public CLDRCalendarNameProviderImpl(Type type, Set<String> langtags) {
  40         super(type, langtags);
  41     }
  42     
  43     @Override
  44     public boolean isSupportedLocale(Locale locale) {
  45         if (Locale.ROOT.equals(locale)) {
  46             return true;
  47         }
  48         String calendarType = null;
  49         if (locale.hasExtensions()) {
  50             calendarType = locale.getUnicodeLocaleType("ca");
  51             locale = locale.stripExtensions();
  52         }
  53         if (calendarType != null) {
  54             switch (calendarType) {
  55                 case "buddhist":
  56                 case "japanese":
  57                 case "gregory":
  58                 case "islamic":
  59                 case "roc":
  60                     break;
  61                 default:
  62                     // Unknown calendar type
  63                     return false;
  64             }
  65         }
  66         return LocaleProviderAdapter.forType(Type.CLDR).isSupportedProviderLocale(locale, langtags);
  67     }
  68 }