/*

 * Copyright (c) 2004, 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

 * or visit www.oracle.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 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;

        }

    }

}