85 lines
3.3 KiB
Java
85 lines
3.3 KiB
Java
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/*
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* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.time.format;
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import android.icu.text.TimeZoneNames;
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import android.icu.util.TimeZone;
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import android.icu.util.ULocale;
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import java.util.Locale;
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import java.util.Map;
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/**
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* A helper class to map a zone name to metazone and back to the
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* appropriate zone id for the particular locale.
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* <p>
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* The zid<->metazone mappings are based on CLDR metaZones.xml.
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* The alias mappings are based on Link entries in tzdb data files and
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* CLDR's supplementalMetadata.xml.
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*/
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class ZoneName {
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public static String toZid(String zid, Locale locale) {
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// Android-changed: delegate to ICU.
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TimeZoneNames tzNames = TimeZoneNames.getInstance(locale);
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if (tzNames.getAvailableMetaZoneIDs().contains(zid)) {
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// Compare TimeZoneFormat#getTargetRegion.
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ULocale uLocale = ULocale.forLocale(locale);
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String region = uLocale.getCountry();
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if (region.length() == 0) {
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uLocale = ULocale.addLikelySubtags(uLocale);
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region = uLocale.getCountry();
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}
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zid = tzNames.getReferenceZoneID(zid, region);
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}
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return toZid(zid);
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}
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public static String toZid(String zid) {
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// Android-changed: Use ICU TimeZone.getCanonicalID().
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String canonicalCldrId = getSystemCanonicalID(zid);
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if (canonicalCldrId != null) {
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return canonicalCldrId;
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}
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return zid;
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}
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// BEGIN Android-added: Get non-custom system canonical time zone Id from ICU.
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public static String getSystemCanonicalID(String zid) {
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if (TimeZone.UNKNOWN_ZONE_ID.equals(zid)) {
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return zid;
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}
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boolean[] isSystemID = { false };
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String canonicalID = TimeZone.getCanonicalID(zid, isSystemID);
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if (canonicalID == null || !isSystemID[0]) {
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return null;
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}
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return canonicalID;
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}
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// END Android-added: Get non-custom system canonical time zone Id from ICU.
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// Android-removed: zidMap and aliasMap containing zone id data.
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// Android-removed: zidToMzone, mzoneToZid, mzoneToZidL, aliases and their initialization code.
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}
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