/* * 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.IBM964;/*** @author Malcolm Ayres*/public class ByteToCharCp964 extends ByteToCharConverter{ private final static IBM964 nioCoder = new IBM964(); 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 mappingTableG2a2; private String mappingTableG2ac; private String mappingTableG2ad; public ByteToCharCp964() { super(); state = G0; byteToCharTable = nioCoder.getDecoderSingleByteMappings(); mappingTableG1 = nioCoder.getDecoderMappingTableG1(); mappingTableG2a2 = nioCoder.getDecoderMappingTableG2a2(); mappingTableG2ac = nioCoder.getDecoderMappingTableG2ac(); mappingTableG2ad = nioCoder.getDecoderMappingTableG2ad(); } /** * Return the character set id */ public String getCharacterEncoding() { return "Cp964"; } /** * 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) state = G2; else if (byte1 == SS3) { badInputLength = 1; throw new MalformedInputException(); } else if ( byte1 <= 0x9f ) // valid single byte outputChar = byteToCharTable.charAt(byte1); else if (byte1 < 0xa1 || byte1 > 0xfe) { badInputLength = 1; throw new MalformedInputException(); } else { // valid 1st byte for G1 firstByte = byte1; 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: // set the correct mapping table for supported G2 sets if ( byte1 == 0xa2) mappingTableG2 = mappingTableG2a2; else if ( byte1 == 0xac) mappingTableG2 = mappingTableG2ac; else if ( byte1 == 0xad) mappingTableG2 = mappingTableG2ad; else { state = G0; badInputLength = 1; throw new MalformedInputException(); } state = G3; break; case G3: if ( byte1 < 0xa1 || byte1 > 0xfe) { // valid 1st byte for G2 set state = G0; badInputLength = 1; throw new MalformedInputException(); } firstByte = byte1; state = G4; break; case G4: state = G0; if ( byte1 < 0xa1 || byte1 > 0xfe) { // valid 2nd byte for G2 set badInputLength = 1; throw new MalformedInputException(); } outputChar = mappingTableG2.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; }}
/*
* 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.IBM964;
/**
* @author Malcolm Ayres
*/
public class ByteToCharCp964 extends ByteToCharConverter
{
private final static IBM964 nioCoder = new IBM964();
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 mappingTableG2a2;
private String mappingTableG2ac;
private String mappingTableG2ad;
public ByteToCharCp964() {
super();
state = G0;
byteToCharTable = nioCoder.getDecoderSingleByteMappings();
mappingTableG1 = nioCoder.getDecoderMappingTableG1();
mappingTableG2a2 = nioCoder.getDecoderMappingTableG2a2();
mappingTableG2ac = nioCoder.getDecoderMappingTableG2ac();
mappingTableG2ad = nioCoder.getDecoderMappingTableG2ad();
}
/**
* Return the character set id
*/
public String getCharacterEncoding()
{
return "Cp964";
}
/**
* 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)
state = G2;
else if (byte1 == SS3) {
badInputLength = 1;
throw new MalformedInputException();
}
else if ( byte1 <= 0x9f ) // valid single byte
outputChar = byteToCharTable.charAt(byte1);
else if (byte1 < 0xa1 || byte1 > 0xfe) {
badInputLength = 1;
throw new MalformedInputException();
} else { // valid 1st byte for G1
firstByte = byte1;
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:
// set the correct mapping table for supported G2 sets
if ( byte1 == 0xa2)
mappingTableG2 = mappingTableG2a2;
else
if ( byte1 == 0xac)
mappingTableG2 = mappingTableG2ac;
else
if ( byte1 == 0xad)
mappingTableG2 = mappingTableG2ad;
else {
state = G0;
badInputLength = 1;
throw new MalformedInputException();
}
state = G3;
break;
case G3:
if ( byte1 < 0xa1 || byte1 > 0xfe) { // valid 1st byte for G2 set
state = G0;
badInputLength = 1;
throw new MalformedInputException();
}
firstByte = byte1;
state = G4;
break;
case G4:
state = G0;
if ( byte1 < 0xa1 || byte1 > 0xfe) { // valid 2nd byte for G2 set
badInputLength = 1;
throw new MalformedInputException();
}
outputChar = mappingTableG2.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;
}
}