/* * Copyright (c) 2005, 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; import java.lang.ref.SoftReference;import java.util.Enumeration;import java.util.LinkedList;import java.util.List;import java.util.Locale;import java.util.Map;import java.util.MissingResourceException;import java.util.Set;import java.util.concurrent.ConcurrentHashMap;import java.util.spi.TimeZoneNameProvider;import sun.util.calendar.ZoneInfo;import sun.util.resources.LocaleData;import sun.util.resources.OpenListResourceBundle; /** * Utility class that deals with the localized time zone names */public final class TimeZoneNameUtility { /** * cache to hold time zone resource bundles. Keyed by Locale */ private static ConcurrentHashMap<Locale, SoftReference<OpenListResourceBundle>> cachedBundles = new ConcurrentHashMap<Locale, SoftReference<OpenListResourceBundle>>(); /** * cache to hold time zone localized strings. Keyed by Locale */ private static ConcurrentHashMap<Locale, SoftReference<String[][]>> cachedZoneData = new ConcurrentHashMap<Locale, SoftReference<String[][]>>(); /** * get time zone localized strings. Enumerate all keys. */ public static final String[][] getZoneStrings(Locale locale) { String[][] zones; SoftReference<String[][]> data = cachedZoneData.get(locale); if (data == null || ((zones = data.get()) == null)) { zones = loadZoneStrings(locale); data = new SoftReference<String[][]>(zones); cachedZoneData.put(locale, data); } return zones; } private static final String[][] loadZoneStrings(Locale locale) { List<String[]> zones = new LinkedList<String[]>(); OpenListResourceBundle rb = getBundle(locale); Enumeration<String> keys = rb.getKeys(); String[] names = null; while(keys.hasMoreElements()) { String key = keys.nextElement(); names = retrieveDisplayNames(rb, key, locale); if (names != null) { zones.add(names); } } String[][] zonesArray = new String[zones.size()][]; return zones.toArray(zonesArray); } /** * Retrieve display names for a time zone ID. */ public static final String[] retrieveDisplayNames(String id, Locale locale) { OpenListResourceBundle rb = getBundle(locale); return retrieveDisplayNames(rb, id, locale); } private static final String[] retrieveDisplayNames(OpenListResourceBundle rb, String id, Locale locale) { LocaleServiceProviderPool pool = LocaleServiceProviderPool.getPool(TimeZoneNameProvider.class); String[] names = null; // Check whether a provider can provide an implementation that's closer // to the requested locale than what the Java runtime itself can provide. if (pool.hasProviders()) { names = pool.getLocalizedObject( TimeZoneNameGetter.INSTANCE, locale, rb, id); } if (names == null) { try { names = rb.getStringArray(id); } catch (MissingResourceException mre) { // fall through } } return names; } private static final OpenListResourceBundle getBundle(Locale locale) { OpenListResourceBundle rb; SoftReference<OpenListResourceBundle> data = cachedBundles.get(locale); if (data == null || ((rb = data.get()) == null)) { rb = LocaleData.getTimeZoneNames(locale); data = new SoftReference<OpenListResourceBundle>(rb); cachedBundles.put(locale, data); } return rb; } /** * Obtains a localized time zone strings from a TimeZoneNameProvider * implementation. */ private static class TimeZoneNameGetter implements LocaleServiceProviderPool.LocalizedObjectGetter<TimeZoneNameProvider, String[]>{ private static final TimeZoneNameGetter INSTANCE = new TimeZoneNameGetter(); public String[] getObject(TimeZoneNameProvider timeZoneNameProvider, Locale locale, String requestID, Object... params) { assert params.length == 0; String[] names = null; String queryID = requestID; if (queryID.equals("GMT")) { names = buildZoneStrings(timeZoneNameProvider, locale, queryID); } else { Map<String, String> aliases = ZoneInfo.getAliasTable(); if (aliases != null) { // Check whether this id is an alias, if so, // look for the standard id. if (aliases.containsKey(queryID)) { String prevID = queryID; while ((queryID = aliases.get(queryID)) != null) { prevID = queryID; } queryID = prevID; } names = buildZoneStrings(timeZoneNameProvider, locale, queryID); if (names == null) { // There may be a case that a standard id has become an // alias. so, check the aliases backward. names = examineAliases(timeZoneNameProvider, locale, queryID, aliases, aliases.entrySet()); } } } if (names != null) { names[0] = requestID; } return names; } private static String[] examineAliases(TimeZoneNameProvider tznp, Locale locale, String id, Map<String, String> aliases, Set<Map.Entry<String, String>> aliasesSet) { if (aliases.containsValue(id)) { for (Map.Entry<String, String> entry : aliasesSet) { if (entry.getValue().equals(id)) { String alias = entry.getKey(); String[] names = buildZoneStrings(tznp, locale, alias); if (names != null) { return names; } else { names = examineAliases(tznp, locale, alias, aliases, aliasesSet); if (names != null) { return names; } } } } } return null; } private static String[] buildZoneStrings(TimeZoneNameProvider tznp, Locale locale, String id) { String[] names = new String[5]; for (int i = 1; i <= 4; i ++) { names[i] = tznp.getDisplayName(id, i>=3, i%2, locale); if (i >= 3 && names[i] == null) { names[i] = names[i-2]; } } if (names[1] == null) { // this id seems not localized by this provider names = null; } return names; } }}
/*
* Copyright (c) 2005, 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;
import java.lang.ref.SoftReference;
import java.util.Enumeration;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.spi.TimeZoneNameProvider;
import sun.util.calendar.ZoneInfo;
import sun.util.resources.LocaleData;
import sun.util.resources.OpenListResourceBundle;
/**
* Utility class that deals with the localized time zone names
*/
public final class TimeZoneNameUtility {
/**
* cache to hold time zone resource bundles. Keyed by Locale
*/
private static ConcurrentHashMap<Locale, SoftReference<OpenListResourceBundle>> cachedBundles =
new ConcurrentHashMap<Locale, SoftReference<OpenListResourceBundle>>();
/**
* cache to hold time zone localized strings. Keyed by Locale
*/
private static ConcurrentHashMap<Locale, SoftReference<String[][]>> cachedZoneData =
new ConcurrentHashMap<Locale, SoftReference<String[][]>>();
/**
* get time zone localized strings. Enumerate all keys.
*/
public static final String[][] getZoneStrings(Locale locale) {
String[][] zones;
SoftReference<String[][]> data = cachedZoneData.get(locale);
if (data == null || ((zones = data.get()) == null)) {
zones = loadZoneStrings(locale);
data = new SoftReference<String[][]>(zones);
cachedZoneData.put(locale, data);
}
return zones;
}
private static final String[][] loadZoneStrings(Locale locale) {
List<String[]> zones = new LinkedList<String[]>();
OpenListResourceBundle rb = getBundle(locale);
Enumeration<String> keys = rb.getKeys();
String[] names = null;
while(keys.hasMoreElements()) {
String key = keys.nextElement();
names = retrieveDisplayNames(rb, key, locale);
if (names != null) {
zones.add(names);
}
}
String[][] zonesArray = new String[zones.size()][];
return zones.toArray(zonesArray);
}
/**
* Retrieve display names for a time zone ID.
*/
public static final String[] retrieveDisplayNames(String id, Locale locale) {
OpenListResourceBundle rb = getBundle(locale);
return retrieveDisplayNames(rb, id, locale);
}
private static final String[] retrieveDisplayNames(OpenListResourceBundle rb,
String id, Locale locale) {
LocaleServiceProviderPool pool =
LocaleServiceProviderPool.getPool(TimeZoneNameProvider.class);
String[] names = null;
// Check whether a provider can provide an implementation that's closer
// to the requested locale than what the Java runtime itself can provide.
if (pool.hasProviders()) {
names = pool.getLocalizedObject(
TimeZoneNameGetter.INSTANCE,
locale, rb, id);
}
if (names == null) {
try {
names = rb.getStringArray(id);
} catch (MissingResourceException mre) {
// fall through
}
}
return names;
}
private static final OpenListResourceBundle getBundle(Locale locale) {
OpenListResourceBundle rb;
SoftReference<OpenListResourceBundle> data = cachedBundles.get(locale);
if (data == null || ((rb = data.get()) == null)) {
rb = LocaleData.getTimeZoneNames(locale);
data = new SoftReference<OpenListResourceBundle>(rb);
cachedBundles.put(locale, data);
}
return rb;
}
/**
* Obtains a localized time zone strings from a TimeZoneNameProvider
* implementation.
*/
private static class TimeZoneNameGetter
implements LocaleServiceProviderPool.LocalizedObjectGetter<TimeZoneNameProvider,
String[]>{
private static final TimeZoneNameGetter INSTANCE =
new TimeZoneNameGetter();
public String[] getObject(TimeZoneNameProvider timeZoneNameProvider,
Locale locale,
String requestID,
Object... params) {
assert params.length == 0;
String[] names = null;
String queryID = requestID;
if (queryID.equals("GMT")) {
names = buildZoneStrings(timeZoneNameProvider, locale, queryID);
} else {
Map<String, String> aliases = ZoneInfo.getAliasTable();
if (aliases != null) {
// Check whether this id is an alias, if so,
// look for the standard id.
if (aliases.containsKey(queryID)) {
String prevID = queryID;
while ((queryID = aliases.get(queryID)) != null) {
prevID = queryID;
}
queryID = prevID;
}
names = buildZoneStrings(timeZoneNameProvider, locale, queryID);
if (names == null) {
// There may be a case that a standard id has become an
// alias. so, check the aliases backward.
names = examineAliases(timeZoneNameProvider, locale,
queryID, aliases, aliases.entrySet());
}
}
}
if (names != null) {
names[0] = requestID;
}
return names;
}
private static String[] examineAliases(TimeZoneNameProvider tznp, Locale locale,
String id,
Map<String, String> aliases,
Set<Map.Entry<String, String>> aliasesSet) {
if (aliases.containsValue(id)) {
for (Map.Entry<String, String> entry : aliasesSet) {
if (entry.getValue().equals(id)) {
String alias = entry.getKey();
String[] names = buildZoneStrings(tznp, locale, alias);
if (names != null) {
return names;
} else {
names = examineAliases(tznp, locale, alias, aliases, aliasesSet);
if (names != null) {
return names;
}
}
}
}
}
return null;
}
private static String[] buildZoneStrings(TimeZoneNameProvider tznp,
Locale locale, String id) {
String[] names = new String[5];
for (int i = 1; i <= 4; i ++) {
names[i] = tznp.getDisplayName(id, i>=3, i%2, locale);
if (i >= 3 && names[i] == null) {
names[i] = names[i-2];
}
}
if (names[1] == null) {
// this id seems not localized by this provider
names = null;
}
return names;
}
}
}