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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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8  * particular file as subject to the "Classpath" exception as provided
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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).
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17  * You should have received a copy of the GNU General Public License version
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24  */
25 package java.time.format;
26 
27 import android.icu.impl.ZoneMeta;
28 import android.icu.text.TimeZoneNames;
29 import android.icu.util.TimeZone;
30 import android.icu.util.ULocale;
31 import java.util.Locale;
32 import 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  */
41 // Android-changed: delegate to ICU.
42 class ZoneName {
43 
toZid(String zid, Locale locale)44     public static String toZid(String zid, Locale locale) {
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 
toZid(String zid)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