/*

 * Copyright 2003-2004 Sun Microsystems, Inc.  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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 */

package sun.nio.cs.ext;

import java.nio.charset.Charset;

import java.nio.charset.CharsetDecoder;

import java.nio.charset.CharsetEncoder;

import java.nio.charset.CharacterCodingException;

import sun.nio.cs.HistoricallyNamedCharset;

public class IBM942C extends Charset implements HistoricallyNamedCharset

{

    public IBM942C() {

        super("x-IBM942C", ExtendedCharsets.aliasesFor("x-IBM942C"));

    }

    public String historicalName() {

        return "Cp942C";

    }

    public boolean contains(Charset cs) {

        return ((cs.name().equals("US-ASCII"))

                || (cs instanceof IBM942C));

    }

    public CharsetDecoder newDecoder() {

        return new Decoder(this);

    }

    public CharsetEncoder newEncoder() {

        return new Encoder(this);

    }

    private static class Decoder extends IBM942.Decoder {

        protected static final String singleByteToChar;

        static {

          String indexs = "";

          for (char c = '\0'; c < '\u0080'; ++c) indexs += c;

              singleByteToChar = indexs +

                                 IBM942.Decoder.singleByteToChar.substring(indexs.length());

        }

        public Decoder(Charset cs) {

            super(cs, singleByteToChar);

        }

    }

    private static class Encoder extends IBM942.Encoder {

   protected static final short index1[];

   protected static final String index2a;

   protected static final int shift = 5;

        static {

            String indexs = "";

            for (char c = '\0'; c < '\u0080'; ++c) indexs += c;

                index2a = IBM942.Encoder.index2a + indexs;

            int o = IBM942.Encoder.index2a.length() + 15000;

            index1 = new short[IBM942.Encoder.index1.length];

            System.arraycopy(IBM942.Encoder.index1, 0, index1, 0, IBM942.Encoder.index1.length);

            for (int i = 0; i * (1<<shift) < 128; ++i) {

                index1[i] = (short)(o + i * (1<<shift));

            }

        }

        public Encoder(Charset cs) {

            super(cs, index1, index2a);

        }

    }

}