/* * Copyright (c) 1997, 2003, 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.io; import sun.nio.cs.ext.IBM33722; /*** @author Malcolm Ayres*/public class ByteToCharCp33722 extends ByteToCharConverter{    private final int G0 = 0;    private final int G1 = 1;    private final int G2 = 2;    private final int G3 = 3;    private final int G4 = 4;    private final int SS2 =  0x8E;    private final int SS3 =  0x8F;     private int firstByte, state;    private String byteToCharTable;    private String mappingTableG1;    private String mappingTableG2;    private String mappingTableG3;     private final static IBM33722 nioCoder = new IBM33722();     public ByteToCharCp33722() {        super();        state = G0;        byteToCharTable = nioCoder.getDecoderSingleByteMappings();        mappingTableG1 = nioCoder.getDecoderMappingTableG1();        mappingTableG2 = nioCoder.getDecoderMappingTableG2();        mappingTableG3 = nioCoder.getDecoderMappingTableG3();    }     /**      * Return the character set id      */    public String getCharacterEncoding()    {       return "Cp33722";    }     /**      * flush out any residual data and reset the buffer state      */    public int flush(char[] output, int outStart, int outEnd)       throws MalformedInputException    {        if (state != G0) {            reset();            badInputLength = 0;            throw new MalformedInputException();        }         reset();        return 0;    }     /**     *  Resets the converter.     */    public void reset() {        state = G0;        charOff = byteOff = 0;    }     /**     * Character conversion     */    public int convert(byte[] input, int inOff, int inEnd,                       char[] output, int outOff, int outEnd)        throws UnknownCharacterException, MalformedInputException,               ConversionBufferFullException    {        int       byte1;       char      outputChar = '\uFFFD';        byteOff = inOff;       charOff = outOff;        while (byteOff < inEnd) {           byte1 = input[byteOff];          if (byte1 < 0)            byte1 += 256;           switch (state) {             case G0:                if (byte1 == SS2)                       // drop into G2 set                   state = G2;                else if (byte1 == SS3)                  // drop into G3 set                   state = G3;                else if ( byte1 <= 0x9f )               // valid single byte                   outputChar = byteToCharTable.charAt(byte1);                else if (byte1 < 0xa1 || byte1 > 0xfe) {  // valid G1 set 1st byte                   badInputLength = 1;                   throw new MalformedInputException();                } else {                   firstByte = byte1;                   // save the 1st byte                   state = G1;                }                break;              case G1:                state = G0;                if ( byte1 < 0xa1 || byte1 > 0xfe) {    // valid second byte for G1                   badInputLength = 1;                   throw new MalformedInputException();                }                outputChar = mappingTableG1.charAt(((firstByte - 0xa1) * 94)  + byte1 - 0xa1);                break;              case G2:                state = G0;                             // valid first byte for G2                if ( byte1 < 0xa1 || byte1 > 0xfe) {                   badInputLength = 1;                   throw new MalformedInputException();                }                outputChar = mappingTableG2.charAt(byte1 - 0xa1);                break;              case G3:                if ( byte1 < 0xa1 || byte1 > 0xfe) {    // valid first byte for G3                   state = G0;                   badInputLength = 1;                   throw new MalformedInputException();                }                firstByte = byte1;                state = G4;                break;              case G4:                state = G0;                             // valid second byte for G3                if ( byte1 < 0xa1 || byte1 > 0xfe) {                   badInputLength = 1;                   throw new MalformedInputException();                }                outputChar = mappingTableG3.charAt(((firstByte - 0xa1) * 94)  + byte1 - 0xa1);                break;           }           if (state == G0) {             if (outputChar == '\uFFFD') {                if (subMode)                   outputChar = subChars[0];                else {                   badInputLength = 1;                   throw new UnknownCharacterException();                }             }              if (charOff >= outEnd)                throw new ConversionBufferFullException();              output[charOff++] = outputChar;          }           byteOff++;        }        return charOff - outOff;     }}