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 * Copyright (c) 2003, 2012, 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.ByteBuffer;

import java.nio.CharBuffer;

import java.nio.charset.Charset;

import java.nio.charset.CharsetDecoder;

import java.nio.charset.CharsetEncoder;

import java.nio.charset.CoderResult;

import sun.nio.cs.HistoricallyNamedCharset;

import static sun.nio.cs.CharsetMapping.*;

public class EUC_JP_Open

    extends Charset

    implements HistoricallyNamedCharset

{

    public EUC_JP_Open() {

        super("x-eucJP-Open", ExtendedCharsets.aliasesFor("x-eucJP-Open"));

    }

    public String historicalName() {

        return "EUC_JP_Solaris";

    }

    public boolean contains(Charset cs) {

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

                || (cs instanceof JIS_X_0201)

                || (cs instanceof EUC_JP));

    }

    public CharsetDecoder newDecoder() {

        return new Decoder(this);

    }

    public CharsetEncoder newEncoder() {

        return new Encoder(this);

    }

    private static class Decoder extends EUC_JP.Decoder {

        private static DoubleByte.Decoder DEC0208_Solaris =

            (DoubleByte.Decoder)new JIS_X_0208_Solaris().newDecoder();

        private static DoubleByte.Decoder DEC0212_Solaris =

            (DoubleByte.Decoder)new JIS_X_0212_Solaris().newDecoder();

        private Decoder(Charset cs) {

            // JIS_X_0208_Solaris only has the "extra" mappings, it

            // does not have the JIS_X_0208 entries

            super(cs, 0.5f, 1.0f, DEC0201, DEC0208, DEC0212_Solaris);

        }

        protected char decodeDouble(int byte1, int byte2) {

            char c = super.decodeDouble(byte1, byte2);

            if (c == UNMAPPABLE_DECODING)

                return DEC0208_Solaris.decodeDouble(byte1 - 0x80, byte2 - 0x80);

            return c;

        }

    }

    private static class Encoder extends EUC_JP.Encoder {

        private static DoubleByte.Encoder ENC0208_Solaris =

            (DoubleByte.Encoder)new JIS_X_0208_Solaris().newEncoder();

        private static DoubleByte.Encoder ENC0212_Solaris =

            (DoubleByte.Encoder)new JIS_X_0212_Solaris().newEncoder();

        private Encoder(Charset cs) {

            // The EUC_JP_Open has some interesting tweak for the

            // encoding, so can't just pass the euc0208_solaris to

            // the euc_jp. Have to override the encodeDouble() as

            // showed below (mapping testing catches this).

            // super(cs, 3.0f, 3.0f, ENC0201, ENC0208_Solaris, ENC0212_Solaris);

            super(cs);

        }

        protected int encodeDouble(char ch) {

            int b = super.encodeDouble(ch);

            if (b != UNMAPPABLE_ENCODING)

                return b;

            b = ENC0208_Solaris.encodeChar(ch);

            if (b != UNMAPPABLE_ENCODING && b > 0x7500) {

                return 0x8F8080 + ENC0212_Solaris.encodeChar(ch);

            }

            return b == UNMAPPABLE_ENCODING ? b : b + 0x8080;

        }

    }

}