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114 lines
4 KiB
Text
114 lines
4 KiB
Text
/*
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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 java.util.HashMap;
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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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String mzone = zidToMzone.get(zid);
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if (mzone == null && aliases.containsKey(zid)) {
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zid = aliases.get(zid);
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mzone = zidToMzone.get(zid);
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}
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if (mzone != null) {
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Map<String, String> map = mzoneToZidL.get(mzone);
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if (map != null && map.containsKey(locale.getCountry())) {
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zid = map.get(locale.getCountry());
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} else {
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zid = mzoneToZid.get(mzone);
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}
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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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if (aliases.containsKey(zid)) {
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return aliases.get(zid);
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}
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return zid;
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}
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private static final String[] zidMap = new String[] {
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// From metaZones.xml
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%%%%ZIDMAP%%%%
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// From tzdb
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"Africa/Khartoum", "Africa_Central", "Africa/Maputo", // tzdata2017c
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"Africa/Windhoek", "Africa_Central", "Africa/Maputo", // tzdata2017c
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"Africa/Sao_Tome", "Africa_Western", "Africa/Lagos", // tzdata2018c
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};
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private static final String[] mzoneMap = new String[] {
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// From metaZones.xml
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%%%%MZONEMAP%%%%
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// From tzdb
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"Africa_Western", "ST", "Africa/Sao_Tome", // tzdata2018c
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};
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private static final String[] aliasMap = new String[] {
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// From supplementalMetadata.xml
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%%%%DEPRECATED%%%%
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// From tzdb
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%%%%TZDATALINK%%%%
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};
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private static final Map<String, String> zidToMzone = new HashMap<>();
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private static final Map<String, String> mzoneToZid = new HashMap<>();
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private static final Map<String, Map<String, String>> mzoneToZidL = new HashMap<>();
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private static final Map<String, String> aliases = new HashMap<>();
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static {
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for (int i = 0; i < zidMap.length; i += 3) {
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zidToMzone.put(zidMap[i], zidMap[i + 1]);
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mzoneToZid.put(zidMap[i + 1], zidMap[i + 2]);
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}
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for (int i = 0; i < mzoneMap.length; i += 3) {
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String mzone = mzoneMap[i];
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Map<String, String> map = mzoneToZidL.get(mzone);
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if (map == null) {
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map = new HashMap<>();
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mzoneToZidL.put(mzone, map);
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}
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map.put(mzoneMap[i + 1], mzoneMap[i + 2]);
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}
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for (int i = 0; i < aliasMap.length; i += 2) {
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aliases.put(aliasMap[i], aliasMap[i + 1]);
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}
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}
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}
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