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 package sun.util.locale.provider;
  26 
  27 import java.util.Calendar;
  28 import static java.util.Calendar.*;
  29 import java.util.Locale;
  30 import java.util.ResourceBundle;
  31 import java.util.Set;
  32 import java.util.spi.CalendarDataProvider;
  33 
  34 /**
  35  * Concrete implementation of the  {@link java.util.spi.CalendarDataProvider
  36  * CalendarDataProvider} class for the JRE LocaleProviderAdapter.
  37  *
  38  * @author Masayoshi Okutsu
  39  * @author Naoto Sato
  40  */
  41 public class CalendarDataProviderImpl extends CalendarDataProvider implements AvailableLanguageTags {
  42     private final LocaleProviderAdapter.Type type;
  43     private final Set<String> langtags;
  44 
  45     public CalendarDataProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) {
  46         this.type = type;
  47         this.langtags = langtags;
  48     }
  49 
  50     @Override
  51     public int getFirstDayOfWeek(Locale locale) {
  52         return getIntData(CalendarDataUtility.FIRST_DAY_OF_WEEK, locale);
  53     }
  54 
  55     @Override
  56     public int getMinimalDaysInFirstWeek(Locale locale) {
  57         return getIntData(CalendarDataUtility.MINIMAL_DAYS_IN_FIRST_WEEK, locale);
  58     }
  59 
  60     @Override
  61     public Locale[] getAvailableLocales() {
  62         return LocaleProviderAdapter.toLocaleArray(langtags);
  63     }
  64 
  65     @Override
  66     public Set<String> getAvailableLanguageTags() {
  67         return langtags;
  68     }
  69 
  70     private int getIntData(String key, Locale locale) {
  71         ResourceBundle rb = LocaleProviderAdapter.forType(type).getLocaleData().getCalendarData(locale);
  72         if (rb.containsKey(key)) {
  73             String firstday = rb.getString(key);
  74             return Integer.parseInt(firstday);
  75         }
  76         return 0;
  77     }
  78 }