/*
    * Copyright (c) 2004, 2010, 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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  package sun.nio.cs.ext;
  
  import java.nio.charset.Charset;
  import java.nio.charset.CharsetDecoder;
  import java.nio.charset.CharsetEncoder;
  import sun.nio.cs.HistoricallyNamedCharset;
  import java.util.Arrays;
  import static sun.nio.cs.CharsetMapping.*;
  
  public class Big5_Solaris extends Charset implements HistoricallyNamedCharset
  {
      public Big5_Solaris() {
          super("x-Big5-Solaris", ExtendedCharsets.aliasesFor("x-Big5-Solaris"));
      }
  
      public String historicalName() {
          return "Big5_Solaris";
      }
  
      public boolean contains(Charset cs) {
          return ((cs.name().equals("US-ASCII"))
                  || (cs instanceof Big5)
                  || (cs instanceof Big5_Solaris));
      }
  
      public CharsetDecoder newDecoder() {
          initb2c();
          return new  DoubleByte.Decoder(this, b2c, b2cSB, 0x40, 0xfe);
      }
  
      public CharsetEncoder newEncoder() {
          initc2b();
          return new DoubleByte.Encoder(this, c2b, c2bIndex);
      }
  
      static char[][] b2c;
      static char[] b2cSB;
      private static volatile boolean b2cInitialized = false;
  
      static void initb2c() {
          if (b2cInitialized)
              return;
          synchronized (Big5_Solaris.class) {
              if (b2cInitialized)
                  return;
              Big5.initb2c();
              b2c = Big5.b2c.clone();
              // Big5 Solaris implementation has 7 additional mappings
              int[] sol = new int[] {
                  0xF9D6, 0x7881,
                  0xF9D7, 0x92B9,
                  0xF9D8, 0x88CF,
                  0xF9D9, 0x58BB,
                  0xF9DA, 0x6052,
                  0xF9DB, 0x7CA7,
                  0xF9DC, 0x5AFA };
              if (b2c[0xf9] == DoubleByte.B2C_UNMAPPABLE) {
                  b2c[0xf9] = new char[0xfe - 0x40 + 1];
                  Arrays.fill(b2c[0xf9], UNMAPPABLE_DECODING);
              }
  
              for (int i = 0; i < sol.length;) {
                  b2c[0xf9][sol[i++] & 0xff - 0x40] = (char)sol[i++];
              }
              b2cSB = Big5.b2cSB;
              b2cInitialized = true;
          }
      }
  
      static char[] c2b;
      static char[] c2bIndex;
      private static volatile boolean c2bInitialized = false;
  
      static void initc2b() {
         if (c2bInitialized)
             return;
         synchronized (Big5_Solaris.class) {
             if (c2bInitialized)
                 return;
             Big5.initc2b();
             c2b = Big5.c2b.clone();
             c2bIndex = Big5.c2bIndex.clone();
             int[] sol = new int[] {
                 0x7881, 0xF9D6,
                 0x92B9, 0xF9D7,
                 0x88CF, 0xF9D8,
                 0x58BB, 0xF9D9,
                 0x6052, 0xF9DA,
                 0x7CA7, 0xF9DB,
                 0x5AFA, 0xF9DC };
 
             for (int i = 0; i < sol.length;) {
                 int c = sol[i++];
                 // no need to check c2bIndex[c >>8], we know it points
                 // to the appropriate place.
                 c2b[c2bIndex[c >> 8] + (c & 0xff)] = (char)sol[i++];
             }
             c2bInitialized = true;
         }
     }
 }