1 /*
   2  * Copyright (c) 2002, 2010, 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 package $PACKAGE$;
  27 
  28 import java.nio.charset.Charset;
  29 import java.nio.charset.CharsetDecoder;
  30 import java.nio.charset.CharsetEncoder;
  31 import sun.nio.cs.DoubleByte;
  32 import sun.nio.cs.HKSCS;
  33 import sun.nio.cs.HistoricallyNamedCharset;
  34 import static sun.nio.cs.CharsetMapping.*;
  35 
  36 public class MS950_HKSCS_XP extends Charset
  37 {
  38     public MS950_HKSCS_XP() {
  39         super("x-MS950-HKSCS-XP", $ALIASES$);
  40     }
  41 
  42     public boolean contains(Charset cs) {
  43         return ((cs.name().equals("US-ASCII"))
  44                 || (cs instanceof MS950)
  45                 || (cs instanceof MS950_HKSCS_XP));
  46     }
  47 
  48     public CharsetDecoder newDecoder() {
  49         return new Decoder(this);
  50     }
  51 
  52     public CharsetEncoder newEncoder() {
  53         return new Encoder(this);
  54     }
  55 
  56     static class Decoder extends HKSCS.Decoder {
  57         private static DoubleByte.Decoder ms950 =
  58             (DoubleByte.Decoder)new MS950().newDecoder();
  59 
  60         /*
  61          * Note current decoder decodes 0x8BC2 --> U+F53A
  62          * ie. maps to Unicode PUA.
  63          * Unaccounted discrepancy between this mapping
  64          * inferred from MS950/windows-950 and the published
  65          * MS HKSCS mappings which maps 0x8BC2 --> U+5C22
  66          * a character defined with the Unified CJK block
  67          */
  68         private static char[][] b2cBmp = new char[0x100][];
  69         static {
  70             initb2c(b2cBmp, HKSCS_XPMapping.b2cBmpStr);
  71         }
  72 
  73         public char decodeDoubleEx(int b1, int b2) {
  74             return UNMAPPABLE_DECODING;
  75         }
  76 
  77         private Decoder(Charset cs) {
  78             super(cs, ms950, b2cBmp, null);
  79         }
  80     }
  81 
  82     private static class Encoder extends HKSCS.Encoder {
  83         private static DoubleByte.Encoder ms950 =
  84             (DoubleByte.Encoder)new MS950().newEncoder();
  85 
  86         /*
  87          * Note current encoder encodes U+F53A --> 0x8BC2
  88          * Published MS HKSCS mappings show
  89          * U+5C22 <--> 0x8BC2
  90          */
  91         static char[][] c2bBmp = new char[0x100][];
  92         static {
  93             initc2b(c2bBmp, HKSCS_XPMapping.b2cBmpStr, null);
  94         }
  95 
  96         public int encodeSupp(int cp) {
  97             return UNMAPPABLE_ENCODING;
  98         }
  99 
 100         private Encoder(Charset cs) {
 101             super(cs, ms950, c2bBmp, null);
 102         }
 103     }
 104 }