| /* |
| * Copyright (c) 2012, 2015, 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.locale.provider; |
| |
| import java.util.Locale; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.TimeZone; |
| import java.util.spi.TimeZoneNameProvider; |
| import sun.util.calendar.ZoneInfoFile; |
| |
| /** |
| * Concrete implementation of the |
| * {@link java.util.spi.TimeZoneNameProvider TimeZoneNameProvider} class |
| * for the JRE LocaleProviderAdapter. |
| * |
| * @author Naoto Sato |
| * @author Masayoshi Okutsu |
| */ |
| public class TimeZoneNameProviderImpl extends TimeZoneNameProvider { |
| private final LocaleProviderAdapter.Type type; |
| private final Set<String> langtags; |
| private static final String CLDR_NO_INHERITANCE_MARKER = "\u2205\u2205\u2205"; |
| |
| TimeZoneNameProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) { |
| this.type = type; |
| this.langtags = langtags; |
| } |
| |
| /** |
| * Returns an array of all locales for which this locale service provider |
| * can provide localized objects or names. |
| * |
| * @return An array of all locales for which this locale service provider |
| * can provide localized objects or names. |
| */ |
| @Override |
| public Locale[] getAvailableLocales() { |
| return LocaleProviderAdapter.toLocaleArray(langtags); |
| } |
| |
| @Override |
| public boolean isSupportedLocale(Locale locale) { |
| return LocaleProviderAdapter.forType(type).isSupportedProviderLocale(locale, langtags); |
| } |
| |
| /** |
| * Returns a name for the given time zone ID that's suitable for |
| * presentation to the user in the specified locale. The given time |
| * zone ID is "GMT" or one of the names defined using "Zone" entries |
| * in the "tz database", a public domain time zone database at |
| * <a href="ftp://elsie.nci.nih.gov/pub/">ftp://elsie.nci.nih.gov/pub/</a>. |
| * The data of this database is contained in a file whose name starts with |
| * "tzdata", and the specification of the data format is part of the zic.8 |
| * man page, which is contained in a file whose name starts with "tzcode". |
| * <p> |
| * If <code>daylight</code> is true, the method should return a name |
| * appropriate for daylight saving time even if the specified time zone |
| * has not observed daylight saving time in the past. |
| * |
| * @param id a time zone ID string |
| * @param daylight if true, return the daylight saving name. |
| * @param style either {@link java.util.TimeZone#LONG TimeZone.LONG} or |
| * {@link java.util.TimeZone#SHORT TimeZone.SHORT} |
| * @param locale the desired locale |
| * @return the human-readable name of the given time zone in the |
| * given locale, or null if it's not available. |
| * @exception IllegalArgumentException if <code>style</code> is invalid, |
| * or <code>locale</code> isn't one of the locales returned from |
| * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() |
| * getAvailableLocales()}. |
| * @exception NullPointerException if <code>ID</code> or <code>locale</code> |
| * is null |
| * @see java.util.TimeZone#getDisplayName(boolean, int, java.util.Locale) |
| */ |
| @Override |
| public String getDisplayName(String id, boolean daylight, int style, Locale locale) { |
| String[] names = getDisplayNameArray(id, locale); |
| if (Objects.nonNull(names)) { |
| assert names.length >= 7; |
| int index = daylight ? 3 : 1; |
| if (style == TimeZone.SHORT) { |
| index++; |
| } |
| return names[index]; |
| } |
| return null; |
| } |
| |
| @Override |
| public String getGenericDisplayName(String id, int style, Locale locale) { |
| String[] names = getDisplayNameArray(id, locale); |
| if (Objects.nonNull(names)) { |
| assert names.length >= 7; |
| return names[(style == TimeZone.LONG) ? 5 : 6]; |
| } |
| return null; |
| } |
| |
| private String[] getDisplayNameArray(String id, Locale locale) { |
| Objects.requireNonNull(id); |
| Objects.requireNonNull(locale); |
| |
| String[] ret = |
| LocaleProviderAdapter.forType(type).getLocaleResources(locale).getTimeZoneNames(id); |
| |
| if (Objects.nonNull(ret) && type == LocaleProviderAdapter.Type.CLDR) { |
| // check for CLDR's "no inheritance marker" |
| for (int index = 0; index < ret.length; index++) { |
| TimeZone tz = null; |
| if (CLDR_NO_INHERITANCE_MARKER.equals(ret[index])) { |
| if (Objects.isNull(tz)) { |
| tz = TimeZone.getTimeZone(id); |
| } |
| int offset = tz.getRawOffset(); |
| if (index == 3 || index == 4) { // daylight |
| offset += tz.getDSTSavings(); |
| } |
| ret[index] = ZoneInfoFile.toCustomID(offset); |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * Returns a String[][] as the DateFormatSymbols.getZoneStrings() value for |
| * the given locale. This method is package private. |
| * |
| * @param locale a Locale for time zone names |
| * @return an array of time zone names arrays |
| */ |
| String[][] getZoneStrings(Locale locale) { |
| return LocaleProviderAdapter.forType(type).getLocaleResources(locale).getZoneStrings(); |
| } |
| } |