author | redestad |
Tue, 03 May 2016 15:50:54 +0200 | |
changeset 37781 | 71ed5645f17c |
parent 37593 | 824750ada3d6 |
child 37782 | ad8fe7507ecc |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. |
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* |
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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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*/ |
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|
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// -- This file was mechanically generated: Do not edit! -- // |
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|
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package sun.nio.cs; |
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import java.nio.charset.Charset; |
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import java.nio.charset.spi.CharsetProvider; |
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import java.util.Iterator; |
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import java.util.Locale; |
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import java.util.Map; |
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import sun.security.action.GetPropertyAction; |
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public class StandardCharsets extends CharsetProvider { |
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_INCLUDE_ALIASES_TABLES_ |
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_INCLUDE_ALIASES_MAP_ |
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_INCLUDE_CLASSES_MAP_ |
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_INCLUDE_CACHE_MAP_ |
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// Maps canonical names to class names |
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private Map<String,String> classMap; |
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// Maps alias names to canonical names |
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private Map<String,String> aliasMap; |
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// Maps canonical names to cached instances |
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private Map<String,Charset> cache; |
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private String packagePrefix = "sun.nio.cs"; |
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public StandardCharsets() { |
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this.aliasMap = new Aliases(); |
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this.classMap = new Classes(); |
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this.cache = new Cache(); |
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} |
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private String canonicalize(String csn) { |
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String acn = aliasMap.get(csn); |
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return (acn != null) ? acn : csn; |
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} |
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// Private ASCII-only version, optimized for interpretation during startup |
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// |
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private static String toLower(String s) { |
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int n = s.length(); |
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boolean allLower = true; |
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for (int i = 0; i < n; i++) { |
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int c = s.charAt(i); |
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if (((c - 'A') | ('Z' - c)) >= 0) { |
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allLower = false; |
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break; |
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} |
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} |
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if (allLower) |
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return s; |
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char[] ca = new char[n]; |
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for (int i = 0; i < n; i++) { |
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int c = s.charAt(i); |
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if (((c - 'A') | ('Z' - c)) >= 0) |
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ca[i] = (char)(c + 0x20); |
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else |
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ca[i] = (char)c; |
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} |
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return new String(ca); |
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} |
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private Charset lookup(String charsetName) { |
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init(); |
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String csn = canonicalize(toLower(charsetName)); |
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// Check cache first |
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Charset cs = cache.get(csn); |
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if (cs != null) |
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return cs; |
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// Do we even support this charset? |
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String cln = classMap.get(csn); |
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if (cln == null) |
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return null; |
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if (cln.equals("US_ASCII")) { |
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cs = new US_ASCII(); |
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cache.put(csn, cs); |
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return cs; |
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} |
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|
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// Instantiate the charset and cache it |
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try { |
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Class<?> c = Class.forName(packagePrefix + "." + cln, |
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true, |
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this.getClass().getClassLoader()); |
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cs = (Charset)c.newInstance(); |
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cache.put(csn, cs); |
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return cs; |
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} catch (ClassNotFoundException | |
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IllegalAccessException | |
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InstantiationException x) { |
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return null; |
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} |
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} |
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public final Charset charsetForName(String charsetName) { |
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synchronized (this) { |
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return lookup(canonicalize(charsetName)); |
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} |
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} |
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public final Iterator<Charset> charsets() { |
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synchronized (this) { |
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init(); |
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} |
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return new Iterator<Charset>() { |
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Iterator<String> i = classMap.keySet().iterator(); |
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139 |
|
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public boolean hasNext() { |
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return i.hasNext(); |
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} |
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|
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public Charset next() { |
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String csn = i.next(); |
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return lookup(csn); |
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} |
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|
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public void remove() { |
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throw new UnsupportedOperationException(); |
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} |
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|
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}; |
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} |
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|
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private boolean initialized = false; |
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|
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/* provider the sun.nio.cs.map property fir sjis/ms932 mapping hack |
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*/ |
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private void init() { |
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if (initialized) |
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return; |
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if (!jdk.internal.misc.VM.isBooted()) |
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return; |
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initialized = true; |
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166 |
|
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String map = GetPropertyAction.privilegedGetProperty("sun.nio.cs.map"); |
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if (map != null) { |
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String[] maps = map.split(","); |
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for (int i = 0; i < maps.length; i++) { |
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if (maps[i].equalsIgnoreCase("Windows-31J/Shift_JIS")) { |
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// if we dont have both sjis and ms932, do nothing |
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if (classMap.get("shift_jis") == null || |
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classMap.get("windows-31j") == null) { |
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break; |
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176 |
} |
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aliases_MS932 = new String[] { |
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"MS932", // JDK historical |
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"windows-932", |
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"csWindows31J", |
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"shift-jis", |
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"ms_kanji", |
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"x-sjis", |
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"csShiftJIS", |
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// This alias takes precedence over the actual |
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// Shift_JIS charset itself since aliases are always |
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// resolved first, before looking up canonical names. |
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"shift_jis" |
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}; |
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aliases_SJIS = new String[] { "sjis" }; |
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191 |
|
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for (String alias : aliases_MS932) { |
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aliasMap.put(toLower(alias), "windows-31j"); |
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194 |
} |
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cache.put("shift_jis", null); |
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196 |
break; |
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197 |
} |
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198 |
} |
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199 |
} |
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200 |
} |
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201 |
|
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} |