| /* |
| * Copyright (c) 2012, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.util.cldr; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedExceptionAction; |
| import java.text.spi.BreakIteratorProvider; |
| import java.text.spi.CollatorProvider; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.ServiceLoader; |
| import java.util.Set; |
| import java.util.StringTokenizer; |
| import java.util.concurrent.ConcurrentHashMap; |
| import sun.util.locale.provider.JRELocaleProviderAdapter; |
| import sun.util.locale.provider.LocaleProviderAdapter; |
| import sun.util.locale.provider.LocaleDataMetaInfo; |
| |
| /** |
| * LocaleProviderAdapter implementation for the CLDR locale data. |
| * |
| * @author Masayoshi Okutsu |
| * @author Naoto Sato |
| */ |
| public class CLDRLocaleProviderAdapter extends JRELocaleProviderAdapter { |
| |
| private static final CLDRBaseLocaleDataMetaInfo baseMetaInfo = new CLDRBaseLocaleDataMetaInfo(); |
| // Assumption: CLDR has only one non-Base module. |
| private final LocaleDataMetaInfo nonBaseMetaInfo; |
| |
| // parent locales map |
| private static volatile Map<Locale, Locale> parentLocalesMap; |
| static { |
| parentLocalesMap = new ConcurrentHashMap<>(); |
| // Assuming these locales do NOT have irregular parent locales. |
| parentLocalesMap.put(Locale.ROOT, Locale.ROOT); |
| parentLocalesMap.put(Locale.ENGLISH, Locale.ENGLISH); |
| parentLocalesMap.put(Locale.US, Locale.US); |
| } |
| |
| public CLDRLocaleProviderAdapter() { |
| LocaleDataMetaInfo nbmi = null; |
| |
| try { |
| nbmi = AccessController.doPrivileged(new PrivilegedExceptionAction<LocaleDataMetaInfo>() { |
| @Override |
| public LocaleDataMetaInfo run() { |
| for (LocaleDataMetaInfo ldmi : ServiceLoader.loadInstalled(LocaleDataMetaInfo.class)) { |
| if (ldmi.getType() == LocaleProviderAdapter.Type.CLDR) { |
| return ldmi; |
| } |
| } |
| return null; |
| } |
| }); |
| } catch (Exception e) { |
| // Catch any exception, and continue as if only CLDR's base locales exist. |
| } |
| |
| nonBaseMetaInfo = nbmi; |
| } |
| |
| /** |
| * Returns the type of this LocaleProviderAdapter |
| * @return the type of this |
| */ |
| @Override |
| public LocaleProviderAdapter.Type getAdapterType() { |
| return LocaleProviderAdapter.Type.CLDR; |
| } |
| |
| @Override |
| public BreakIteratorProvider getBreakIteratorProvider() { |
| return null; |
| } |
| |
| @Override |
| public CollatorProvider getCollatorProvider() { |
| return null; |
| } |
| |
| @Override |
| public Locale[] getAvailableLocales() { |
| Set<String> all = createLanguageTagSet("AvailableLocales"); |
| Locale[] locs = new Locale[all.size()]; |
| int index = 0; |
| for (String tag : all) { |
| locs[index++] = Locale.forLanguageTag(tag); |
| } |
| return locs; |
| } |
| |
| @Override |
| protected Set<String> createLanguageTagSet(String category) { |
| // Directly call Base tags, as we know it's in the base module. |
| String supportedLocaleString = baseMetaInfo.availableLanguageTags(category); |
| String nonBaseTags = null; |
| |
| if (nonBaseMetaInfo != null) { |
| nonBaseTags = nonBaseMetaInfo.availableLanguageTags(category); |
| } |
| if (nonBaseTags != null) { |
| if (supportedLocaleString != null) { |
| supportedLocaleString += " " + nonBaseTags; |
| } else { |
| supportedLocaleString = nonBaseTags; |
| } |
| } |
| if (supportedLocaleString == null) { |
| return Collections.emptySet(); |
| } |
| Set<String> tagset = new HashSet<>(); |
| StringTokenizer tokens = new StringTokenizer(supportedLocaleString); |
| while (tokens.hasMoreTokens()) { |
| tagset.add(tokens.nextToken()); |
| } |
| return tagset; |
| } |
| |
| // Implementation of ResourceBundleBasedAdapter |
| @Override |
| public List<Locale> getCandidateLocales(String baseName, Locale locale) { |
| List<Locale> candidates = super.getCandidateLocales(baseName, locale); |
| return applyParentLocales(baseName, candidates); |
| } |
| |
| private List<Locale> applyParentLocales(String baseName, List<Locale> candidates) { |
| // check irregular parents |
| for (int i = 0; i < candidates.size(); i++) { |
| Locale l = candidates.get(i); |
| if (!l.equals(Locale.ROOT)) { |
| Locale p = getParentLocale(l); |
| if (p != null && |
| !candidates.get(i+1).equals(p)) { |
| List<Locale> applied = candidates.subList(0, i+1); |
| applied.addAll(applyParentLocales(baseName, super.getCandidateLocales(baseName, p))); |
| return applied; |
| } |
| } |
| } |
| |
| return candidates; |
| } |
| |
| private static Locale getParentLocale(Locale locale) { |
| Locale parent = parentLocalesMap.get(locale); |
| |
| if (parent == null) { |
| String tag = locale.toLanguageTag(); |
| for (Map.Entry<Locale, String[]> entry : baseMetaInfo.parentLocales().entrySet()) { |
| if (Arrays.binarySearch(entry.getValue(), tag) >= 0) { |
| parent = entry.getKey(); |
| break; |
| } |
| } |
| if (parent == null) { |
| parent = locale; // non existent marker |
| } |
| parentLocalesMap.putIfAbsent(locale, parent); |
| } |
| |
| if (locale.equals(parent)) { |
| // means no irregular parent. |
| parent = null; |
| } |
| |
| return parent; |
| } |
| |
| /** |
| * This method returns equivalent CLDR supported locale for zh-HK, |
| * no, no-NO locales so that COMPAT locales do not precede |
| * those locales during ResourceBundle search path. |
| */ |
| private static Locale getEquivalentLoc(Locale locale) { |
| switch (locale.toString()) { |
| case "zh_HK": |
| return Locale.forLanguageTag("zh-Hant-HK"); |
| case "no": |
| case "no_NO": |
| return Locale.forLanguageTag("nb"); |
| } |
| return locale; |
| } |
| |
| @Override |
| public boolean isSupportedProviderLocale(Locale locale, Set<String> langtags) { |
| return Locale.ROOT.equals(locale) |
| || langtags.contains(locale.stripExtensions().toLanguageTag()) |
| || langtags.contains(getEquivalentLoc(locale).toLanguageTag()); |
| } |
| } |