/*
* Copyright (c) 2010, 2011, 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
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/*
*******************************************************************************
* Copyright (C) 2009-2010, International Business Machines Corporation and *
* others. All Rights Reserved. *
*******************************************************************************
*/
package sun.util.locale;
import java.util.Collections;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.SortedMap;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
import sun.util.locale.InternalLocaleBuilder.CaseInsensitiveChar;
import sun.util.locale.InternalLocaleBuilder.CaseInsensitiveString;
public class LocaleExtensions {
private final Map<Character, Extension> extensionMap;
private final String id;
public static final LocaleExtensions CALENDAR_JAPANESE
= new LocaleExtensions("u-ca-japanese",
UnicodeLocaleExtension.SINGLETON,
UnicodeLocaleExtension.CA_JAPANESE);
public static final LocaleExtensions NUMBER_THAI
= new LocaleExtensions("u-nu-thai",
UnicodeLocaleExtension.SINGLETON,
UnicodeLocaleExtension.NU_THAI);
private LocaleExtensions(String id, Character key, Extension value) {
this.id = id;
this.extensionMap = Collections.singletonMap(key, value);
}
/*
* Package private constructor, only used by InternalLocaleBuilder.
*/
LocaleExtensions(Map<CaseInsensitiveChar, String> extensions,
Set<CaseInsensitiveString> uattributes,
Map<CaseInsensitiveString, String> ukeywords) {
boolean hasExtension = !LocaleUtils.isEmpty(extensions);
boolean hasUAttributes = !LocaleUtils.isEmpty(uattributes);
boolean hasUKeywords = !LocaleUtils.isEmpty(ukeywords);
if (!hasExtension && !hasUAttributes && !hasUKeywords) {
id = "";
extensionMap = Collections.emptyMap();
return;
}
// Build extension map
SortedMap<Character, Extension> map = new TreeMap<>();
if (hasExtension) {
for (Entry<CaseInsensitiveChar, String> ext : extensions.entrySet()) {
char key = LocaleUtils.toLower(ext.getKey().value());
String value = ext.getValue();
if (LanguageTag.isPrivateusePrefixChar(key)) {
// we need to exclude special variant in privuateuse, e.g. "x-abc-lvariant-DEF"
value = InternalLocaleBuilder.removePrivateuseVariant(value);
if (value == null) {
continue;
}
}
map.put(key, new Extension(key, LocaleUtils.toLowerString(value)));
}
}
if (hasUAttributes || hasUKeywords) {
SortedSet<String> uaset = null;
SortedMap<String, String> ukmap = null;
if (hasUAttributes) {
uaset = new TreeSet<>();
for (CaseInsensitiveString cis : uattributes) {
uaset.add(LocaleUtils.toLowerString(cis.value()));
}
}
if (hasUKeywords) {
ukmap = new TreeMap<>();
for (Entry<CaseInsensitiveString, String> kwd : ukeywords.entrySet()) {
String key = LocaleUtils.toLowerString(kwd.getKey().value());
String type = LocaleUtils.toLowerString(kwd.getValue());
ukmap.put(key, type);
}
}
UnicodeLocaleExtension ule = new UnicodeLocaleExtension(uaset, ukmap);
map.put(UnicodeLocaleExtension.SINGLETON, ule);
}
if (map.isEmpty()) {
// this could happen when only privuateuse with special variant
id = "";
extensionMap = Collections.emptyMap();
} else {
id = toID(map);
extensionMap = map;
}
}
public Set<Character> getKeys() {
if (extensionMap.isEmpty()) {
return Collections.emptySet();
}
return Collections.unmodifiableSet(extensionMap.keySet());
}
public Extension getExtension(Character key) {
return extensionMap.get(LocaleUtils.toLower(key));
}
public String getExtensionValue(Character key) {
Extension ext = extensionMap.get(LocaleUtils.toLower(key));
if (ext == null) {
return null;
}
return ext.getValue();
}
public Set<String> getUnicodeLocaleAttributes() {
Extension ext = extensionMap.get(UnicodeLocaleExtension.SINGLETON);
if (ext == null) {
return Collections.emptySet();
}
assert (ext instanceof UnicodeLocaleExtension);
return ((UnicodeLocaleExtension)ext).getUnicodeLocaleAttributes();
}
public Set<String> getUnicodeLocaleKeys() {
Extension ext = extensionMap.get(UnicodeLocaleExtension.SINGLETON);
if (ext == null) {
return Collections.emptySet();
}
assert (ext instanceof UnicodeLocaleExtension);
return ((UnicodeLocaleExtension)ext).getUnicodeLocaleKeys();
}
public String getUnicodeLocaleType(String unicodeLocaleKey) {
Extension ext = extensionMap.get(UnicodeLocaleExtension.SINGLETON);
if (ext == null) {
return null;
}
assert (ext instanceof UnicodeLocaleExtension);
return ((UnicodeLocaleExtension)ext).getUnicodeLocaleType(LocaleUtils.toLowerString(unicodeLocaleKey));
}
public boolean isEmpty() {
return extensionMap.isEmpty();
}
public static boolean isValidKey(char c) {
return LanguageTag.isExtensionSingletonChar(c) || LanguageTag.isPrivateusePrefixChar(c);
}
public static boolean isValidUnicodeLocaleKey(String ukey) {
return UnicodeLocaleExtension.isKey(ukey);
}
private static String toID(SortedMap<Character, Extension> map) {
StringBuilder buf = new StringBuilder();
Extension privuse = null;
for (Entry<Character, Extension> entry : map.entrySet()) {
char singleton = entry.getKey();
Extension extension = entry.getValue();
if (LanguageTag.isPrivateusePrefixChar(singleton)) {
privuse = extension;
} else {
if (buf.length() > 0) {
buf.append(LanguageTag.SEP);
}
buf.append(extension);
}
}
if (privuse != null) {
if (buf.length() > 0) {
buf.append(LanguageTag.SEP);
}
buf.append(privuse);
}
return buf.toString();
}
@Override
public String toString() {
return id;
}
public String getID() {
return id;
}
@Override
public int hashCode() {
return id.hashCode();
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (!(other instanceof LocaleExtensions)) {
return false;
}
return id.equals(((LocaleExtensions)other).id);
}
}