1 /* 2 * Copyright (c) 2017, 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.Arrays; 31 import java.util.Map; 32 import java.util.Locale; 33 import java.util.Set; 34 import java.util.Optional; 35 import java.util.concurrent.ConcurrentHashMap; 36 import sun.util.locale.provider.LocaleProviderAdapter; 37 import sun.util.locale.provider.LocaleResources; 38 import sun.util.locale.provider.CalendarDataProviderImpl; 39 import sun.util.locale.provider.CalendarDataUtility; 40 41 /** 42 * Concrete implementation of the 43 * {@link java.util.spi.CalendarDataProvider CalendarDataProvider} class 44 * for the CLDR LocaleProviderAdapter. 45 * 46 * @author Naoto Sato 47 */ 48 public class CLDRCalendarDataProviderImpl extends CalendarDataProviderImpl { 49 50 private static Map<String, Integer> firstDay = new ConcurrentHashMap<>(); 51 private static Map<String, Integer> minDays = new ConcurrentHashMap<>(); 52 53 public CLDRCalendarDataProviderImpl(Type type, Set<String> langtags) { 54 super(type, langtags); 55 } 56 57 @Override 58 public int getFirstDayOfWeek(Locale locale) { 59 return findValue(CalendarDataUtility.FIRST_DAY_OF_WEEK, locale); 60 } 61 62 @Override 63 public int getMinimalDaysInFirstWeek(Locale locale) { 64 return findValue(CalendarDataUtility.MINIMAL_DAYS_IN_FIRST_WEEK, locale); 65 } 66 67 /** 68 * Finds the requested integer value for the locale. 69 * Each resource consists of the following: 70 * 71 * (n: cc1 cc2 ... ccx;)* 72 * 73 * where 'n' is the integer for the following region codes, terminated by 74 * a ';'. 75 * 76 */ 77 private static int findValue(String key, Locale locale) { 78 Map<String, Integer> map = CalendarDataUtility.FIRST_DAY_OF_WEEK.equals(key) ? 79 firstDay : minDays; 80 String region = locale.getCountry(); 81 82 if (region.isEmpty()) { 83 return 0; 84 } 85 86 Integer val = map.get(region); 87 if (val == null) { 88 String valStr = 89 LocaleProviderAdapter.forType(Type.CLDR).getLocaleResources(Locale.ROOT) 90 .getCalendarData(key); 91 val = retrieveInteger(valStr, region) 92 .orElse(retrieveInteger(valStr, "001").orElse(0)); 93 map.putIfAbsent(region, val); 94 } 95 96 return val; 97 } 98 99 private static Optional<Integer> retrieveInteger(String src, String region) { 100 return Arrays.stream(src.split(";")) 101 .filter(entry -> entry.contains(region)) 102 .map(entry -> entry.substring(0, entry.indexOf(":"))) 103 .findAny() 104 .map(Integer::parseInt); 105 } 106 }