| /* |
| * Copyright (c) 2010, 2018, 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. |
| */ |
| |
| /* |
| ******************************************************************************* |
| * Copyright (C) 2009-2010, International Business Machines Corporation and * |
| * others. All Rights Reserved. * |
| ******************************************************************************* |
| */ |
| |
| package sun.util.locale; |
| |
| import java.lang.ref.SoftReference; |
| import java.util.StringJoiner; |
| |
| public final class BaseLocale { |
| |
| public static final String SEP = "_"; |
| |
| private static final Cache CACHE = new Cache(); |
| |
| private final String language; |
| private final String script; |
| private final String region; |
| private final String variant; |
| |
| private volatile int hash; |
| |
| // This method must be called with normalize = false only when creating the |
| // Locale.* constants and non-normalized BaseLocale$Keys used for lookup. |
| private BaseLocale(String language, String script, String region, String variant, |
| boolean normalize) { |
| if (normalize) { |
| this.language = LocaleUtils.toLowerString(language).intern(); |
| this.script = LocaleUtils.toTitleString(script).intern(); |
| this.region = LocaleUtils.toUpperString(region).intern(); |
| this.variant = variant.intern(); |
| } else { |
| this.language = language; |
| this.script = script; |
| this.region = region; |
| this.variant = variant; |
| } |
| } |
| |
| // Called for creating the Locale.* constants. No argument |
| // validation is performed. |
| public static BaseLocale createInstance(String language, String region) { |
| BaseLocale base = new BaseLocale(language, "", region, "", false); |
| CACHE.put(new Key(base), base); |
| return base; |
| } |
| |
| public static BaseLocale getInstance(String language, String script, |
| String region, String variant) { |
| // JDK uses deprecated ISO639.1 language codes for he, yi and id |
| if (language != null) { |
| if (LocaleUtils.caseIgnoreMatch(language, "he")) { |
| language = "iw"; |
| } else if (LocaleUtils.caseIgnoreMatch(language, "yi")) { |
| language = "ji"; |
| } else if (LocaleUtils.caseIgnoreMatch(language, "id")) { |
| language = "in"; |
| } |
| } |
| |
| Key key = new Key(language, script, region, variant, false); |
| BaseLocale baseLocale = CACHE.get(key); |
| return baseLocale; |
| } |
| |
| public String getLanguage() { |
| return language; |
| } |
| |
| public String getScript() { |
| return script; |
| } |
| |
| public String getRegion() { |
| return region; |
| } |
| |
| public String getVariant() { |
| return variant; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (!(obj instanceof BaseLocale)) { |
| return false; |
| } |
| BaseLocale other = (BaseLocale)obj; |
| return language == other.language |
| && script == other.script |
| && region == other.region |
| && variant == other.variant; |
| } |
| |
| @Override |
| public String toString() { |
| StringJoiner sj = new StringJoiner(", "); |
| if (!language.isEmpty()) { |
| sj.add("language=" + language); |
| } |
| if (!script.isEmpty()) { |
| sj.add("script=" + script); |
| } |
| if (!region.isEmpty()) { |
| sj.add("region=" + region); |
| } |
| if (!variant.isEmpty()) { |
| sj.add("variant=" + variant); |
| } |
| return sj.toString(); |
| } |
| |
| @Override |
| public int hashCode() { |
| int h = hash; |
| if (h == 0) { |
| // Generating a hash value from language, script, region and variant |
| h = language.hashCode(); |
| h = 31 * h + script.hashCode(); |
| h = 31 * h + region.hashCode(); |
| h = 31 * h + variant.hashCode(); |
| if (h != 0) { |
| hash = h; |
| } |
| } |
| return h; |
| } |
| |
| private static final class Key { |
| /** |
| * Keep a SoftReference to the Key data if normalized (actually used |
| * as a cache key) and not initialized via the constant creation path. |
| * |
| * This allows us to avoid creating SoftReferences on lookup Keys |
| * (which are short-lived) and for Locales created via |
| * Locale#createConstant. |
| */ |
| private final SoftReference<BaseLocale> holderRef; |
| private final BaseLocale holder; |
| |
| private final boolean normalized; |
| private final int hash; |
| |
| /** |
| * Creates a Key. language and region must be normalized |
| * (intern'ed in the proper case). |
| */ |
| private Key(BaseLocale locale) { |
| this.holder = locale; |
| this.holderRef = null; |
| this.normalized = true; |
| String language = locale.getLanguage(); |
| String region = locale.getRegion(); |
| assert LocaleUtils.toLowerString(language).intern() == language |
| && LocaleUtils.toUpperString(region).intern() == region |
| && locale.getVariant() == "" |
| && locale.getScript() == ""; |
| |
| int h = language.hashCode(); |
| if (region != "") { |
| int len = region.length(); |
| for (int i = 0; i < len; i++) { |
| h = 31 * h + LocaleUtils.toLower(region.charAt(i)); |
| } |
| } |
| hash = h; |
| } |
| |
| private Key(String language, String script, String region, |
| String variant, boolean normalize) { |
| if (language == null) { |
| language = ""; |
| } |
| if (script == null) { |
| script = ""; |
| } |
| if (region == null) { |
| region = ""; |
| } |
| if (variant == null) { |
| variant = ""; |
| } |
| |
| BaseLocale locale = new BaseLocale(language, script, region, variant, normalize); |
| this.normalized = normalize; |
| if (normalized) { |
| this.holderRef = new SoftReference<>(locale); |
| this.holder = null; |
| } else { |
| this.holderRef = null; |
| this.holder = locale; |
| } |
| this.hash = hashCode(locale); |
| } |
| |
| public int hashCode() { |
| return hash; |
| } |
| |
| private int hashCode(BaseLocale locale) { |
| int h = 0; |
| String lang = locale.getLanguage(); |
| int len = lang.length(); |
| for (int i = 0; i < len; i++) { |
| h = 31*h + LocaleUtils.toLower(lang.charAt(i)); |
| } |
| String scrt = locale.getScript(); |
| len = scrt.length(); |
| for (int i = 0; i < len; i++) { |
| h = 31*h + LocaleUtils.toLower(scrt.charAt(i)); |
| } |
| String regn = locale.getRegion(); |
| len = regn.length(); |
| for (int i = 0; i < len; i++) { |
| h = 31*h + LocaleUtils.toLower(regn.charAt(i)); |
| } |
| String vart = locale.getVariant(); |
| len = vart.length(); |
| for (int i = 0; i < len; i++) { |
| h = 31*h + vart.charAt(i); |
| } |
| return h; |
| } |
| |
| private BaseLocale getBaseLocale() { |
| return (holder == null) ? holderRef.get() : holder; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof Key && this.hash == ((Key)obj).hash) { |
| BaseLocale other = ((Key) obj).getBaseLocale(); |
| BaseLocale locale = this.getBaseLocale(); |
| if (other != null && locale != null |
| && LocaleUtils.caseIgnoreMatch(other.getLanguage(), locale.getLanguage()) |
| && LocaleUtils.caseIgnoreMatch(other.getScript(), locale.getScript()) |
| && LocaleUtils.caseIgnoreMatch(other.getRegion(), locale.getRegion()) |
| // variant is case sensitive in JDK! |
| && other.getVariant().equals(locale.getVariant())) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public static Key normalize(Key key) { |
| if (key.normalized) { |
| return key; |
| } |
| |
| // Only normalized keys may be softly referencing the data holder |
| assert (key.holder != null && key.holderRef == null); |
| BaseLocale locale = key.holder; |
| return new Key(locale.getLanguage(), locale.getScript(), |
| locale.getRegion(), locale.getVariant(), true); |
| } |
| } |
| |
| private static class Cache extends LocaleObjectCache<Key, BaseLocale> { |
| |
| public Cache() { |
| } |
| |
| @Override |
| protected Key normalizeKey(Key key) { |
| return Key.normalize(key); |
| } |
| |
| @Override |
| protected BaseLocale createObject(Key key) { |
| return Key.normalize(key).getBaseLocale(); |
| } |
| } |
| } |