1 /*
2 * Copyright (c) 2005, 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
145 * @param style TimeZone.LONG or TimeZone.SHORT
146 * @param locale desired Locale
147 * @return the requested time zone name, or null if not found.
148 */
149 public static String retrieveDisplayName(String id, boolean daylight, int style, Locale locale) {
150 String[] names = retrieveDisplayNamesImpl(id, locale);
151 if (Objects.nonNull(names)) {
152 return names[(daylight ? 4 : 2) - style];
153 } else {
154 return null;
155 }
156 }
157
158 /**
159 * Converts the time zone id from LDML's 5-letter id to tzdb's id
160 *
161 * @param shortID time zone short ID defined in LDML
162 * @return the tzdb's time zone ID
163 */
164 public static Optional<String> convertLDMLShortID(String shortID) {
165 return ((CLDRLocaleProviderAdapter)LocaleProviderAdapter.forType(Type.CLDR))
166 .getTimeZoneID(shortID)
167 .map(id -> id.replaceAll("\\s.*", ""));
168 }
169
170 private static String[] retrieveDisplayNamesImpl(String id, Locale locale) {
171 LocaleServiceProviderPool pool =
172 LocaleServiceProviderPool.getPool(TimeZoneNameProvider.class);
173 String[] names;
174 Map<Locale, String[]> perLocale = null;
175
176 SoftReference<Map<Locale, String[]>> ref = cachedDisplayNames.get(id);
177 if (Objects.nonNull(ref)) {
178 perLocale = ref.get();
179 if (Objects.nonNull(perLocale)) {
180 names = perLocale.get(locale);
181 if (Objects.nonNull(names)) {
182 return names;
183 }
184 }
185 }
186
187 // build names array
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1 /*
2 * Copyright (c) 2005, 2018, 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
145 * @param style TimeZone.LONG or TimeZone.SHORT
146 * @param locale desired Locale
147 * @return the requested time zone name, or null if not found.
148 */
149 public static String retrieveDisplayName(String id, boolean daylight, int style, Locale locale) {
150 String[] names = retrieveDisplayNamesImpl(id, locale);
151 if (Objects.nonNull(names)) {
152 return names[(daylight ? 4 : 2) - style];
153 } else {
154 return null;
155 }
156 }
157
158 /**
159 * Converts the time zone id from LDML's 5-letter id to tzdb's id
160 *
161 * @param shortID time zone short ID defined in LDML
162 * @return the tzdb's time zone ID
163 */
164 public static Optional<String> convertLDMLShortID(String shortID) {
165 return canonicalTZID(shortID);
166 }
167
168 /**
169 * Returns the canonical ID for the given ID
170 */
171 public static Optional<String> canonicalTZID(String id) {
172 return ((CLDRLocaleProviderAdapter)LocaleProviderAdapter.forType(Type.CLDR))
173 .canonicalTZID(id);
174 }
175
176 private static String[] retrieveDisplayNamesImpl(String id, Locale locale) {
177 LocaleServiceProviderPool pool =
178 LocaleServiceProviderPool.getPool(TimeZoneNameProvider.class);
179 String[] names;
180 Map<Locale, String[]> perLocale = null;
181
182 SoftReference<Map<Locale, String[]>> ref = cachedDisplayNames.get(id);
183 if (Objects.nonNull(ref)) {
184 perLocale = ref.get();
185 if (Objects.nonNull(perLocale)) {
186 names = perLocale.get(locale);
187 if (Objects.nonNull(names)) {
188 return names;
189 }
190 }
191 }
192
193 // build names array
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