1 /* 2 * Copyright (c) 2016, 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 23 * questions. 24 */ 25 package java.time.format; 26 27 import android.icu.text.TimeZoneNames; 28 import android.icu.util.TimeZone; 29 import android.icu.util.ULocale; 30 import java.util.Locale; 31 import java.util.Map; 32 33 /** 34 * A helper class to map a zone name to metazone and back to the 35 * appropriate zone id for the particular locale. 36 * <p> 37 * The zid<->metazone mappings are based on CLDR metaZones.xml. 38 * The alias mappings are based on Link entries in tzdb data files. 39 */ 40 class ZoneName { 41 toZid(String zid, Locale locale)42 public static String toZid(String zid, Locale locale) { 43 // Android-changed: delegate to ICU. 44 TimeZoneNames tzNames = TimeZoneNames.getInstance(locale); 45 if (tzNames.getAvailableMetaZoneIDs().contains(zid)) { 46 // Compare TimeZoneFormat#getTargetRegion. 47 ULocale uLocale = ULocale.forLocale(locale); 48 String region = uLocale.getCountry(); 49 if (region.length() == 0) { 50 uLocale = ULocale.addLikelySubtags(uLocale); 51 region = uLocale.getCountry(); 52 } 53 zid = tzNames.getReferenceZoneID(zid, region); 54 } 55 return toZid(zid); 56 } 57 toZid(String zid)58 public static String toZid(String zid) { 59 // Android-changed: Use ICU TimeZone.getCanonicalID(). 60 String canonicalCldrId = getSystemCanonicalID(zid); 61 if (canonicalCldrId != null) { 62 return canonicalCldrId; 63 } 64 return zid; 65 } 66 67 // BEGIN Android-added: Get non-custom system canonical time zone Id from ICU. getSystemCanonicalID(String zid)68 public static String getSystemCanonicalID(String zid) { 69 if (TimeZone.UNKNOWN_ZONE_ID.equals(zid)) { 70 return zid; 71 } 72 boolean[] isSystemID = { false }; 73 String canonicalID = TimeZone.getCanonicalID(zid, isSystemID); 74 if (canonicalID == null || !isSystemID[0]) { 75 return null; 76 } 77 return canonicalID; 78 } 79 // END Android-added: Get non-custom system canonical time zone Id from ICU. 80 81 // Android-removed: zidMap and aliasMap containing zone id data. 82 // Android-removed: zidToMzone, mzoneToZid, mzoneToZidL, aliases and their initialization code. 83 } 84