1 /*
   2  * Copyright (c) 2002, 2006, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /*
  27  */
  28 
  29 package sun.nio.cs.ext;
  30 
  31 import java.nio.charset.Charset;
  32 import java.nio.ByteBuffer;
  33 import java.nio.CharBuffer;
  34 import java.nio.charset.CharsetDecoder;
  35 import java.nio.charset.CharsetEncoder;
  36 import java.nio.charset.CoderResult;
  37 import sun.nio.cs.HistoricallyNamedCharset;
  38 import sun.nio.cs.*;
  39 
  40 public class ISO2022_KR extends ISO2022
  41 implements HistoricallyNamedCharset
  42 {
  43     private static Charset ksc5601_cs;
  44 
  45     public ISO2022_KR() {
  46         super("ISO-2022-KR", ExtendedCharsets.aliasesFor("ISO-2022-KR"));
  47         ksc5601_cs = new EUC_KR();
  48     }
  49 
  50     public boolean contains(Charset cs) {
  51         // overlapping repertoire of EUC_KR, aka KSC5601
  52         return ((cs instanceof EUC_KR) ||
  53              (cs.name().equals("US-ASCII")) ||
  54              (cs instanceof ISO2022_KR));
  55     }
  56 
  57     public String historicalName() {
  58         return "ISO2022KR";
  59     }
  60 
  61     public CharsetDecoder newDecoder() {
  62         return new Decoder(this);
  63     }
  64 
  65     public CharsetEncoder newEncoder() {
  66         return new Encoder(this);
  67     }
  68 
  69     private static class Decoder extends ISO2022.Decoder {
  70         public Decoder(Charset cs)
  71         {
  72             super(cs);
  73             SODesig = new byte[][] {{(byte)'$', (byte)')', (byte)'C'}};
  74             SODecoder = new CharsetDecoder[1];
  75 
  76             try {
  77                 SODecoder[0] = ksc5601_cs.newDecoder();
  78             } catch (Exception e) {};
  79         }
  80     }
  81 
  82     private static class Encoder extends ISO2022.Encoder {
  83 
  84         public Encoder(Charset cs) {
  85             super(cs);
  86             SODesig = new byte[] {'$', ')', 'C' };
  87             try {
  88                 ISOEncoder = ksc5601_cs.newEncoder();
  89             } catch (Exception e) { }
  90         }
  91 
  92         public boolean canEncode(char c) {
  93             return (ISOEncoder.canEncode(c));
  94         }
  95     }
  96 }