feat(jdk8): move files to new folder to avoid resources compiled.

jdkSrc/jdk8/sun/util/locale/provider/TimeZoneNameUtility.java

@@ -0,0 +1,256 @@
+/*
+ * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.util.locale.provider;
+
+import java.lang.ref.SoftReference;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.spi.TimeZoneNameProvider;
+import sun.util.calendar.ZoneInfo;
+
+/**
+ * Utility class that deals with the localized time zone names
+ *
+ * @author Naoto Sato
+ * @author Masayoshi Okutsu
+ */
+public final class TimeZoneNameUtility {
+
+    /**
+     * cache to hold time zone localized strings. Keyed by Locale
+     */
+    private static ConcurrentHashMap<Locale, SoftReference<String[][]>> cachedZoneData =
+        new ConcurrentHashMap<>();
+
+    /**
+     * Cache for managing display names per timezone per locale
+     * The structure is:
+     *     Map(key=id, value=SoftReference(Map(key=locale, value=displaynames)))
+     */
+    private static final Map<String, SoftReference<Map<Locale, String[]>>> cachedDisplayNames =
+        new ConcurrentHashMap<>();
+
+    /**
+     * get time zone localized strings. Enumerate all keys.
+     */
+    public static String[][] getZoneStrings(Locale locale) {
+        String[][] zones;
+        SoftReference<String[][]> data = cachedZoneData.get(locale);
+
+        if (data == null || ((zones = data.get()) == null)) {
+            zones = loadZoneStrings(locale);
+            data = new SoftReference<>(zones);
+            cachedZoneData.put(locale, data);
+        }
+
+        return zones;
+    }
+
+    private static String[][] loadZoneStrings(Locale locale) {
+        // If the provider is a TimeZoneNameProviderImpl, call its getZoneStrings
+        // in order to avoid per-ID retrieval.
+        LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(TimeZoneNameProvider.class, locale);
+        TimeZoneNameProvider provider = adapter.getTimeZoneNameProvider();
+        if (provider instanceof TimeZoneNameProviderImpl) {
+            return ((TimeZoneNameProviderImpl)provider).getZoneStrings(locale);
+        }
+
+        // Performs per-ID retrieval.
+        Set<String> zoneIDs = LocaleProviderAdapter.forJRE().getLocaleResources(locale).getZoneIDs();
+        List<String[]> zones = new LinkedList<>();
+        for (String key : zoneIDs) {
+            String[] names = retrieveDisplayNamesImpl(key, locale);
+            if (names != null) {
+                zones.add(names);
+            }
+        }
+
+        String[][] zonesArray = new String[zones.size()][];
+        return zones.toArray(zonesArray);
+    }
+
+    /**
+     * Retrieve display names for a time zone ID.
+     */
+    public static String[] retrieveDisplayNames(String id, Locale locale) {
+        Objects.requireNonNull(id);
+        Objects.requireNonNull(locale);
+
+        return retrieveDisplayNamesImpl(id, locale);
+    }
+
+    /**
+     * Retrieves a generic time zone display name for a time zone ID.
+     *
+     * @param id     time zone ID
+     * @param style  TimeZone.LONG or TimeZone.SHORT
+     * @param locale desired Locale
+     * @return the requested generic time zone display name, or null if not found.
+     */
+    public static String retrieveGenericDisplayName(String id, int style, Locale locale) {
+        String[] names = retrieveDisplayNamesImpl(id, locale);
+        if (Objects.nonNull(names)) {
+            return names[6 - style];
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Retrieves a standard or daylight-saving time name for the given time zone ID.
+     *
+     * @param id       time zone ID
+     * @param daylight true for a daylight saving time name, or false for a standard time name
+     * @param style    TimeZone.LONG or TimeZone.SHORT
+     * @param locale   desired Locale
+     * @return the requested time zone name, or null if not found.
+     */
+    public static String retrieveDisplayName(String id, boolean daylight, int style, Locale locale) {
+        String[] names = retrieveDisplayNamesImpl(id, locale);
+        if (Objects.nonNull(names)) {
+            return names[(daylight ? 4 : 2) - style];
+        } else {
+            return null;
+        }
+    }
+
+    private static String[] retrieveDisplayNamesImpl(String id, Locale locale) {
+        LocaleServiceProviderPool pool =
+            LocaleServiceProviderPool.getPool(TimeZoneNameProvider.class);
+        String[] names;
+        Map<Locale, String[]> perLocale = null;
+
+        SoftReference<Map<Locale, String[]>> ref = cachedDisplayNames.get(id);
+        if (Objects.nonNull(ref)) {
+            perLocale = ref.get();
+            if (Objects.nonNull(perLocale)) {
+                names = perLocale.get(locale);
+                if (Objects.nonNull(names)) {
+                    return names;
+                }
+            }
+        }
+
+        // build names array
+        names = new String[7];
+        names[0] = id;
+        for (int i = 1; i <= 6; i ++) {
+            names[i] = pool.getLocalizedObject(TimeZoneNameGetter.INSTANCE, locale,
+                    i<5 ? (i<3 ? "std" : "dst") : "generic", i%2, id);
+        }
+
+        if (Objects.isNull(perLocale)) {
+            perLocale = new ConcurrentHashMap<>();
+        }
+        perLocale.put(locale, names);
+        ref = new SoftReference<>(perLocale);
+        cachedDisplayNames.put(id, ref);
+        return names;
+    }
+
+
+    /**
+     * Obtains a localized time zone strings from a TimeZoneNameProvider
+     * implementation.
+     */
+    private static class TimeZoneNameGetter
+        implements LocaleServiceProviderPool.LocalizedObjectGetter<TimeZoneNameProvider,
+                                                                   String> {
+        private static final TimeZoneNameGetter INSTANCE =
+            new TimeZoneNameGetter();
+
+        @Override
+        public String getObject(TimeZoneNameProvider timeZoneNameProvider,
+                                Locale locale,
+                                String requestID,
+                                Object... params) {
+            assert params.length == 2;
+            int style = (int) params[0];
+            String tzid = (String) params[1];
+            String value = getName(timeZoneNameProvider, locale, requestID, style, tzid);
+            if (value == null) {
+                Map<String, String> aliases = ZoneInfo.getAliasTable();
+                if (aliases != null) {
+                    String canonicalID = aliases.get(tzid);
+                    if (canonicalID != null) {
+                        value = getName(timeZoneNameProvider, locale, requestID, style, canonicalID);
+                    }
+                    if (value == null) {
+                        value = examineAliases(timeZoneNameProvider, locale, requestID,
+                                     canonicalID != null ? canonicalID : tzid, style, aliases);
+                    }
+                }
+            }
+
+            return value;
+        }
+
+        private static String examineAliases(TimeZoneNameProvider tznp, Locale locale,
+                                             String requestID, String tzid, int style,
+                                             Map<String, String> aliases) {
+            for (Map.Entry<String, String> entry : aliases.entrySet()) {
+                if (entry.getValue().equals(tzid)) {
+                    String alias = entry.getKey();
+                    String name = getName(tznp, locale, requestID, style, alias);
+                    if (name != null) {
+                        return name;
+                    }
+                    name = examineAliases(tznp, locale, requestID, alias, style, aliases);
+                    if (name != null) {
+                        return name;
+                    }
+                }
+            }
+            return null;
+        }
+
+        private static String getName(TimeZoneNameProvider timeZoneNameProvider,
+                                      Locale locale, String requestID, int style, String tzid) {
+            String value = null;
+            switch (requestID) {
+            case "std":
+                value = timeZoneNameProvider.getDisplayName(tzid, false, style, locale);
+                break;
+            case "dst":
+                value = timeZoneNameProvider.getDisplayName(tzid, true, style, locale);
+                break;
+            case "generic":
+                value = timeZoneNameProvider.getGenericDisplayName(tzid, style, locale);
+                break;
+            }
+            return value;
+        }
+    }
+
+    // No instantiation
+    private TimeZoneNameUtility() {
+    }
+}