author | naoto |
Wed, 11 Jul 2018 14:47:43 -0700 | |
changeset 51061 | 9f310b672b8c |
parent 50576 | 374bd919d8fe |
child 51763 | caef940517be |
permissions | -rw-r--r-- |
49904 | 1 |
/* |
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.util.cldr; |
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import static sun.util.locale.provider.LocaleProviderAdapter.Type; |
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import java.text.MessageFormat; |
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import java.util.Arrays; |
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import java.util.Locale; |
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import java.util.Objects; |
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import java.util.ResourceBundle; |
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import java.util.Set; |
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import java.util.TimeZone; |
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import java.util.stream.Collectors; |
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import sun.util.calendar.ZoneInfoFile; |
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import sun.util.locale.provider.LocaleProviderAdapter; |
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import sun.util.locale.provider.LocaleResources; |
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import sun.util.locale.provider.TimeZoneNameProviderImpl; |
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import sun.util.locale.provider.TimeZoneNameUtility; |
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/** |
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* Concrete implementation of the |
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* {@link java.util.spi.TimeZoneNameProvider TimeZoneNameProvider} class |
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* for the CLDR LocaleProviderAdapter. |
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* |
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* @author Naoto Sato |
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*/ |
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public class CLDRTimeZoneNameProviderImpl extends TimeZoneNameProviderImpl { |
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private static final String NO_INHERITANCE_MARKER = "\u2205\u2205\u2205"; |
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private static class AVAILABLE_IDS { |
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static final String[] INSTANCE = |
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Arrays.stream(ZoneInfoFile.getZoneIds()) |
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.sorted() |
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.toArray(String[]::new); |
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} |
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// display name array indexes |
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private static final int INDEX_TZID = 0; |
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private static final int INDEX_STD_LONG = 1; |
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private static final int INDEX_STD_SHORT = 2; |
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private static final int INDEX_DST_LONG = 3; |
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private static final int INDEX_DST_SHORT = 4; |
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private static final int INDEX_GEN_LONG = 5; |
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private static final int INDEX_GEN_SHORT = 6; |
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public CLDRTimeZoneNameProviderImpl(Type type, Set<String> langtags) { |
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super(type, langtags); |
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} |
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@Override |
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protected String[] getDisplayNameArray(String id, Locale locale) { |
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String tzid = TimeZoneNameUtility.canonicalTZID(id).orElse(id); |
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String[] namesSuper = super.getDisplayNameArray(tzid, locale); |
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if (Objects.nonNull(namesSuper)) { |
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// CLDR's resource bundle has an translated entry for this id. |
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// Fix up names if needed, either missing or no-inheritance |
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namesSuper[INDEX_TZID] = id; |
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// Check if standard long name exists. If not, try to retrieve the name |
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// from language only locale resources. E.g., "Europe/London" |
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// for en-GB only contains DST names |
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if (!exists(namesSuper, INDEX_STD_LONG) && !locale.getCountry().isEmpty()) { |
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String[] names = |
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getDisplayNameArray(id, Locale.forLanguageTag(locale.getLanguage())); |
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if (exists(names, INDEX_STD_LONG)) { |
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namesSuper[INDEX_STD_LONG] = names[INDEX_STD_LONG]; |
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} |
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} |
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for(int i = INDEX_STD_LONG; i < namesSuper.length; i++) { // index 0 is the 'id' itself |
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switch (namesSuper[i]) { |
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case "": |
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// Fill in empty elements |
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deriveFallbackName(namesSuper, i, locale, |
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namesSuper[INDEX_DST_LONG].isEmpty()); |
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break; |
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case NO_INHERITANCE_MARKER: |
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// CLDR's "no inheritance marker" |
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namesSuper[i] = toGMTFormat(id, i == INDEX_DST_LONG || i == INDEX_DST_SHORT, |
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i % 2 != 0, locale); |
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break; |
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default: |
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break; |
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} |
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} |
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return namesSuper; |
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} else { |
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// Derive the names for this id. Validate the id first. |
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if (Arrays.binarySearch(AVAILABLE_IDS.INSTANCE, id) >= 0) { |
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String[] names = new String[INDEX_GEN_SHORT + 1]; |
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names[INDEX_TZID] = id; |
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deriveFallbackNames(names, locale); |
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return names; |
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} |
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} |
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return null; |
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} |
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@Override |
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protected String[][] getZoneStrings(Locale locale) { |
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// Use English for the ROOT locale |
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locale = locale.equals(Locale.ROOT) ? Locale.ENGLISH : locale; |
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String[][] ret = super.getZoneStrings(locale); |
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// Fill in for the empty names. |
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// English names are prefilled for performance. |
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51061
9f310b672b8c
8206980: ZonedDateTime could not parse timezone name with zh_CN locale correctly.
naoto
parents:
50576
diff
changeset
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if (!locale.equals(Locale.ENGLISH) && |
9f310b672b8c
8206980: ZonedDateTime could not parse timezone name with zh_CN locale correctly.
naoto
parents:
50576
diff
changeset
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!locale.equals(Locale.US)) { |
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for (int zoneIndex = 0; zoneIndex < ret.length; zoneIndex++) { |
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deriveFallbackNames(ret[zoneIndex], locale); |
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} |
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} |
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return ret; |
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} |
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// Derive fallback time zone name according to LDML's logic |
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private void deriveFallbackNames(String[] names, Locale locale) { |
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for (int i = INDEX_STD_LONG; i <= INDEX_GEN_SHORT; i++) { |
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deriveFallbackName(names, i, locale, false); |
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} |
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} |
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private void deriveFallbackName(String[] names, int index, Locale locale, boolean noDST) { |
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if (exists(names, index)) { |
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return; |
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} |
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// Check if COMPAT can substitute the name |
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if (LocaleProviderAdapter.getAdapterPreference().contains(Type.JRE)) { |
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String[] compatNames = (String[])LocaleProviderAdapter.forJRE() |
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.getLocaleResources(locale) |
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.getTimeZoneNames(names[INDEX_TZID]); |
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if (compatNames != null) { |
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for (int i = INDEX_STD_LONG; i <= INDEX_GEN_SHORT; i++) { |
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// Assumes COMPAT has no empty slots |
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if (i == index || !exists(names, i)) { |
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names[i] = compatNames[i]; |
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} |
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} |
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return; |
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} |
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} |
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// Type Fallback |
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if (noDST && typeFallback(names, index)) { |
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return; |
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} |
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// Region Fallback |
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if (regionFormatFallback(names, index, locale)) { |
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return; |
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} |
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// last resort |
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String id = names[INDEX_TZID].toUpperCase(Locale.ROOT); |
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if (!id.startsWith("UT")) { |
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names[index] = toGMTFormat(names[INDEX_TZID], |
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index == INDEX_DST_LONG || index == INDEX_DST_SHORT, |
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index % 2 != 0, |
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locale); |
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// aliases of "GMT" timezone. |
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if ((exists(names, INDEX_STD_LONG)) && (id.startsWith("Etc/") |
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|| id.startsWith("GMT") || id.startsWith("Greenwich"))) { |
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switch (id) { |
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case "Etc/GMT": |
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case "Etc/GMT-0": |
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case "Etc/GMT+0": |
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case "Etc/GMT0": |
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case "GMT+0": |
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case "GMT-0": |
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case "GMT0": |
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case "Greenwich": |
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names[INDEX_DST_LONG] = names[INDEX_GEN_LONG] = names[INDEX_STD_LONG]; |
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break; |
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} |
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} |
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} |
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} |
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private boolean exists(String[] names, int index) { |
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return Objects.nonNull(names) |
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&& Objects.nonNull(names[index]) |
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&& !names[index].isEmpty(); |
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} |
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private boolean typeFallback(String[] names, int index) { |
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// check generic |
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int genIndex = INDEX_GEN_SHORT - index % 2; |
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if (!exists(names, index) && exists(names, genIndex)) { |
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names[index] = names[genIndex]; |
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} else { |
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// check standard |
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int stdIndex = INDEX_STD_SHORT - index % 2; |
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if (!exists(names, index) && exists(names, stdIndex)) { |
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names[index] = names[stdIndex]; |
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} |
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} |
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return exists(names, index); |
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} |
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private boolean regionFormatFallback(String[] names, int index, Locale l) { |
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String id = names[INDEX_TZID]; |
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LocaleResources lr = LocaleProviderAdapter.forType(Type.CLDR).getLocaleResources(l); |
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ResourceBundle fd = lr.getJavaTimeFormatData(); |
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String rgn = (String) lr.getTimeZoneNames("timezone.excity." + id); |
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if (rgn == null && !id.startsWith("Etc") && !id.startsWith("SystemV")) { |
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int slash = id.lastIndexOf('/'); |
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if (slash > 0) { |
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rgn = id.substring(slash + 1).replaceAll("_", " "); |
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} |
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} |
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if (rgn != null) { |
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String fmt = ""; |
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switch (index) { |
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case INDEX_STD_LONG: |
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fmt = fd.getString("timezone.regionFormat.standard"); |
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break; |
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case INDEX_DST_LONG: |
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fmt = fd.getString("timezone.regionFormat.daylight"); |
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break; |
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case INDEX_GEN_LONG: |
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fmt = fd.getString("timezone.regionFormat"); |
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break; |
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} |
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if (!fmt.isEmpty()) { |
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names[index] = MessageFormat.format(fmt, rgn); |
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} |
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} |
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return exists(names, index); |
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} |
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private String toGMTFormat(String id, boolean daylight, boolean isShort, Locale l) { |
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TimeZone tz = ZoneInfoFile.getZoneInfo(id); |
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int offset = (tz.getRawOffset() + (daylight ? tz.getDSTSavings() : 0)) / 60000; |
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LocaleResources lr = LocaleProviderAdapter.forType(Type.CLDR).getLocaleResources(l); |
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ResourceBundle fd = lr.getJavaTimeFormatData(); |
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if (offset == 0) { |
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return fd.getString("timezone.gmtZeroFormat"); |
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} else { |
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String gmtFormat = fd.getString("timezone.gmtFormat"); |
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String hourFormat = fd.getString("timezone.hourFormat"); |
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if (offset > 0) { |
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hourFormat = hourFormat.substring(0, hourFormat.indexOf(";")); |
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} else { |
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hourFormat = hourFormat.substring(hourFormat.indexOf(";") + 1); |
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offset = -offset; |
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} |
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hourFormat = hourFormat |
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.replaceFirst("H+", (isShort ? "\\%1\\$d" : "\\%1\\$02d")) |
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.replaceFirst("m+", "\\%2\\$02d"); |
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return MessageFormat.format(gmtFormat, |
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String.format(hourFormat, offset / 60, offset % 60)); |
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} |
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} |
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} |