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 */
25package java.time.format;
26
27import android.icu.impl.ZoneMeta;
28import android.icu.text.TimeZoneNames;
29import android.icu.util.TimeZone;
30import android.icu.util.ULocale;
31import java.util.Locale;
32import java.util.Map;
33
34/**
35 * A helper class to map a zone name to metazone and back to the
36 * appropriate zone id for the particular locale.
37 * <p>
38 * The zid<->metazone mappings are based on CLDR metaZones.xml.
39 * The alias mappings are based on Link entries in tzdb data files.
40 */
41class ZoneName {
42
43    public static String toZid(String zid, Locale locale) {
44        // Android-changed: delegate to ICU.
45        TimeZoneNames tzNames = TimeZoneNames.getInstance(locale);
46        if (tzNames.getAvailableMetaZoneIDs().contains(zid)) {
47            // Compare TimeZoneFormat#getTargetRegion.
48            ULocale uLocale = ULocale.forLocale(locale);
49            String region = uLocale.getCountry();
50            if (region.length() == 0) {
51                uLocale = ULocale.addLikelySubtags(uLocale);
52                region = uLocale.getCountry();
53            }
54            zid = tzNames.getReferenceZoneID(zid, region);
55        }
56        return toZid(zid);
57    }
58
59    public static String toZid(String zid) {
60        // Android-changed: Use ICU ZoneMeta.
61        String canonicalCldrId = ZoneMeta.getCanonicalCLDRID(zid);
62        if (canonicalCldrId != null) {
63            return canonicalCldrId;
64        }
65        return zid;
66    }
67
68    // Android-removed: zidMap and aliasMap containing zone id data.
69    // Android-removed: zidToMzone, mzoneToZid, mzoneToZidL, aliases and their initialization code.
70}
71