/*

 * Copyright (c) 2002, 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 static sun.nio.cs.CharsetMapping.*;

public class MS950_HKSCS_XP extends Charset

{

    public MS950_HKSCS_XP() {

        super("x-MS950-HKSCS-XP", ExtendedCharsets.aliasesFor("x-MS950-HKSCS-XP"));

    }

    public boolean contains(Charset cs) {

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

                || (cs instanceof MS950)

                || (cs instanceof MS950_HKSCS_XP));

    }

    public CharsetDecoder newDecoder() {

        return new Decoder(this);

    }

    public CharsetEncoder newEncoder() {

        return new Encoder(this);

    }

    static class Decoder extends HKSCS.Decoder {

        private static DoubleByte.Decoder ms950 =

            (DoubleByte.Decoder)new MS950().newDecoder();

        /*

         * Note current decoder decodes 0x8BC2 --> U+F53A

         * ie. maps to Unicode PUA.

         * Unaccounted discrepancy between this mapping

         * inferred from MS950/windows-950 and the published

         * MS HKSCS mappings which maps 0x8BC2 --> U+5C22

         * a character defined with the Unified CJK block

         */

        private static char[][] b2cBmp = new char[0x100][];

        static {

            initb2c(b2cBmp, HKSCS_XPMapping.b2cBmpStr);

        }

        public char decodeDoubleEx(int b1, int b2) {

            return UNMAPPABLE_DECODING;

        }

        private Decoder(Charset cs) {

            super(cs, ms950, b2cBmp, null);

        }

    }

    private static class Encoder extends HKSCS.Encoder {

        private static DoubleByte.Encoder ms950 =

            (DoubleByte.Encoder)new MS950().newEncoder();

        /*

         * Note current encoder encodes U+F53A --> 0x8BC2

         * Published MS HKSCS mappings show

         * U+5C22 <--> 0x8BC2

         */

        static char[][] c2bBmp = new char[0x100][];

        static {

            initc2b(c2bBmp, HKSCS_XPMapping.b2cBmpStr, null);

        }

        public int encodeSupp(int cp) {

            return UNMAPPABLE_ENCODING;

        }

        private Encoder(Charset cs) {

            super(cs, ms950, c2bBmp, null);

        }

    }

}