/*

 * Copyright 1996-1998 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.io;

/**

 * The SJIS converters follow the Shift JIS definition in the JIS

 * X0208:1997 standard as much as possible. The MS932 converters must

 * be used where the Microsoft Code Page 932 character repertoire and

 * Unicode mappings are required.

 *

 * @author Limin Shi

 * @author Mark Son-Bell

 */

public class ByteToCharSJIS extends ByteToCharJIS0208 {

    ByteToCharJIS0201 bcJIS0201 = new ByteToCharJIS0201();

    public String getCharacterEncoding() {

        return "SJIS";

    }

    protected char convSingleByte(int b) {

        // If the high bits are all off, it's ASCII == Unicode

        if ((b & 0xFF80) == 0) {

            return (char)b;

        }

        return bcJIS0201.getUnicode(b);

    }

    protected char getUnicode(int c1, int c2) {

        int adjust = c2 < 0x9F ? 1 : 0;

        int rowOffset = c1 < 0xA0 ? 0x70 : 0xB0;

        int cellOffset = (adjust == 1) ? (c2 > 0x7F ? 0x20 : 0x1F) : 0x7E;

        int b1 = ((c1 - rowOffset) << 1) - adjust;

        int b2 = c2 - cellOffset;

        return super.getUnicode(b1, b2);

    }

    String prt(int i) {

        return Integer.toString(i,16);

    }

}