/* * Copyright (c) 1997, 2000, 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;/*** @author Tom Zhou*/public abstract class CharToByteISO2022 extends CharToByteConverter{ private final byte ISO_ESC = 0x1b; private final byte ISO_SI = 0x0f; private final byte ISO_SO = 0x0e; private final byte ISO_SS2_7 = 0x4e; private final byte ISO_SS3_7 = 0x4f; private final byte SS2 = (byte)0x8e; private final byte P2 = (byte)0xA2; private final byte P3 = (byte)0xA3; private final byte MSB = (byte)0x80; protected final byte maximumDesignatorLength = 4; protected String SODesignator, SS2Designator = null, SS3Designator = null; protected CharToByteConverter codeConverter; private boolean shiftout = false; private boolean SODesDefined = false; private boolean SS2DesDefined = false; private boolean SS3DesDefined = false; private boolean newshiftout = false; private boolean newSODesDefined = false; private boolean newSS2DesDefined = false; private boolean newSS3DesDefined = false; public int flush(byte[] output, int outStart, int outEnd) throws MalformedInputException { reset(); return 0; } public void reset() { shiftout = false; SODesDefined = false; SS2DesDefined = false; SS3DesDefined = false; byteOff = charOff = 0; } public boolean canConvert(char ch) { if (ch<0x80) return true; return codeConverter.canConvert(ch); } private int unicodeToNative(char unicode, byte ebyte[]) { int index = 0; byte tmpByte[]; byte convByte[] = new byte[codeConverter.getMaxBytesPerChar()]; char convChar[] = {unicode}; int converted; try{ converted = codeConverter.convert(convChar, 0, 1, convByte, 0, codeConverter.getMaxBytesPerChar()); } catch(Exception e) { return -1; } if (converted == 2) { if (!SODesDefined) { newSODesDefined = true; ebyte[0] = ISO_ESC; tmpByte = SODesignator.getBytes(); System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length); index = tmpByte.length+1; } if (!shiftout) { newshiftout = true; ebyte[index++] = ISO_SO; } ebyte[index++] = (byte)(convByte[0]&0x7f); ebyte[index++] = (byte)(convByte[1]&0x7f); } else { if((convByte[0] == SS2)&&(convByte[1] == P2)) { if (!SS2DesDefined) { newSS2DesDefined = true; ebyte[0] = ISO_ESC; tmpByte = SS2Designator.getBytes(); System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length); index = tmpByte.length+1; } ebyte[index++] = ISO_ESC; ebyte[index++] = ISO_SS2_7; ebyte[index++] = (byte)(convByte[2]&0x7f); ebyte[index++] = (byte)(convByte[3]&0x7f); } if((convByte[0] == SS2)&&(convByte[1] == 0xA3)) { if(!SS3DesDefined){ newSS3DesDefined = true; ebyte[0] = ISO_ESC; tmpByte = SS3Designator.getBytes(); System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length); index = tmpByte.length+1; } ebyte[index++] = ISO_ESC; ebyte[index++] = ISO_SS3_7; ebyte[index++] = (byte)(convByte[2]&0x7f); ebyte[index++] = (byte)(convByte[3]&0x7f); } } return index; } /** * Character conversion */ public int convert(char[] input, int inOff, int inEnd, byte[] output, int outOff, int outEnd) throws UnknownCharacterException, MalformedInputException, ConversionBufferFullException { int outputSize; byte [] tmpbuf = new byte[this.getMaxBytesPerChar()]; byte [] outputByte; byteOff = outOff; newshiftout = shiftout; newSODesDefined = SODesDefined; newSS2DesDefined = SS2DesDefined; newSS3DesDefined = SS3DesDefined; //Fixed 4122961 by bringing the charOff++ out to this // loop where it belongs, changing the loop from // while(){} to for(){}. for (charOff = inOff; charOff < inEnd; charOff++) { outputByte = tmpbuf; if (input[charOff] < 0x80) { // ASCII if (shiftout){ newshiftout = false; outputSize = 2; outputByte[0] = ISO_SI; outputByte[1] = (byte)(input[charOff] & 0x7f); } else { outputSize = 1; outputByte[0] = (byte)(input[charOff] & 0x7f); } if(input[charOff] == '\n'){ newSODesDefined = false; newSS2DesDefined = false; newSS3DesDefined = false; } } else { outputSize = unicodeToNative(input[charOff], outputByte); } if (outputSize == -1) { if (subMode) { if(!newSODesDefined){ newSODesDefined = !newSODesDefined; outputByte[0] = ISO_SO; outputByte[1] = (byte)'?'; outputSize = 2; } else { outputByte = subBytes; outputSize = subBytes.length; } } else { badInputLength = 1; throw new UnknownCharacterException(); } } if (outEnd - byteOff < outputSize) throw new ConversionBufferFullException(); for (int i = 0; i < outputSize; i++) output[byteOff++] = outputByte[i]; // Bug 4266772. Update statuses only when output buffer has been // updated. When ConversionBufferFullException() has been throwed // we want to keep old statuses for next call. shiftout = newshiftout; SODesDefined = newSODesDefined; SS2DesDefined = newSS2DesDefined; SS3DesDefined = newSS3DesDefined; } return byteOff - outOff; }}
/*
* Copyright (c) 1997, 2000, 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;
/**
* @author Tom Zhou
*/
public abstract class CharToByteISO2022 extends CharToByteConverter
{
private final byte ISO_ESC = 0x1b;
private final byte ISO_SI = 0x0f;
private final byte ISO_SO = 0x0e;
private final byte ISO_SS2_7 = 0x4e;
private final byte ISO_SS3_7 = 0x4f;
private final byte SS2 = (byte)0x8e;
private final byte P2 = (byte)0xA2;
private final byte P3 = (byte)0xA3;
private final byte MSB = (byte)0x80;
protected final byte maximumDesignatorLength = 4;
protected String SODesignator,
SS2Designator = null,
SS3Designator = null;
protected CharToByteConverter codeConverter;
private boolean shiftout = false;
private boolean SODesDefined = false;
private boolean SS2DesDefined = false;
private boolean SS3DesDefined = false;
private boolean newshiftout = false;
private boolean newSODesDefined = false;
private boolean newSS2DesDefined = false;
private boolean newSS3DesDefined = false;
public int flush(byte[] output, int outStart, int outEnd)
throws MalformedInputException
{
reset();
return 0;
}
public void reset() {
shiftout = false;
SODesDefined = false;
SS2DesDefined = false;
SS3DesDefined = false;
byteOff = charOff = 0;
}
public boolean canConvert(char ch)
{
if (ch<0x80)
return true;
return codeConverter.canConvert(ch);
}
private int unicodeToNative(char unicode, byte ebyte[])
{
int index = 0;
byte tmpByte[];
byte convByte[] = new byte[codeConverter.getMaxBytesPerChar()];
char convChar[] = {unicode};
int converted;
try{
converted = codeConverter.convert(convChar, 0, 1, convByte, 0,
codeConverter.getMaxBytesPerChar());
} catch(Exception e) {
return -1;
}
if (converted == 2) {
if (!SODesDefined) {
newSODesDefined = true;
ebyte[0] = ISO_ESC;
tmpByte = SODesignator.getBytes();
System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length);
index = tmpByte.length+1;
}
if (!shiftout) {
newshiftout = true;
ebyte[index++] = ISO_SO;
}
ebyte[index++] = (byte)(convByte[0]&0x7f);
ebyte[index++] = (byte)(convByte[1]&0x7f);
} else {
if((convByte[0] == SS2)&&(convByte[1] == P2)) {
if (!SS2DesDefined) {
newSS2DesDefined = true;
ebyte[0] = ISO_ESC;
tmpByte = SS2Designator.getBytes();
System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length);
index = tmpByte.length+1;
}
ebyte[index++] = ISO_ESC;
ebyte[index++] = ISO_SS2_7;
ebyte[index++] = (byte)(convByte[2]&0x7f);
ebyte[index++] = (byte)(convByte[3]&0x7f);
}
if((convByte[0] == SS2)&&(convByte[1] == 0xA3))
{
if(!SS3DesDefined){
newSS3DesDefined = true;
ebyte[0] = ISO_ESC;
tmpByte = SS3Designator.getBytes();
System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length);
index = tmpByte.length+1;
}
ebyte[index++] = ISO_ESC;
ebyte[index++] = ISO_SS3_7;
ebyte[index++] = (byte)(convByte[2]&0x7f);
ebyte[index++] = (byte)(convByte[3]&0x7f);
}
}
return index;
}
/**
* Character conversion
*/
public int convert(char[] input, int inOff, int inEnd,
byte[] output, int outOff, int outEnd)
throws UnknownCharacterException, MalformedInputException,
ConversionBufferFullException
{
int outputSize;
byte [] tmpbuf = new byte[this.getMaxBytesPerChar()];
byte [] outputByte;
byteOff = outOff;
newshiftout = shiftout;
newSODesDefined = SODesDefined;
newSS2DesDefined = SS2DesDefined;
newSS3DesDefined = SS3DesDefined;
//Fixed 4122961 by bringing the charOff++ out to this
// loop where it belongs, changing the loop from
// while(){} to for(){}.
for (charOff = inOff; charOff < inEnd; charOff++) {
outputByte = tmpbuf;
if (input[charOff] < 0x80) { // ASCII
if (shiftout){
newshiftout = false;
outputSize = 2;
outputByte[0] = ISO_SI;
outputByte[1] = (byte)(input[charOff] & 0x7f);
} else {
outputSize = 1;
outputByte[0] = (byte)(input[charOff] & 0x7f);
}
if(input[charOff] == '\n'){
newSODesDefined = false;
newSS2DesDefined = false;
newSS3DesDefined = false;
}
} else {
outputSize = unicodeToNative(input[charOff], outputByte);
}
if (outputSize == -1) {
if (subMode) {
if(!newSODesDefined){
newSODesDefined = !newSODesDefined;
outputByte[0] = ISO_SO;
outputByte[1] = (byte)'?';
outputSize = 2;
} else {
outputByte = subBytes;
outputSize = subBytes.length;
}
} else {
badInputLength = 1;
throw new UnknownCharacterException();
}
}
if (outEnd - byteOff < outputSize)
throw new ConversionBufferFullException();
for (int i = 0; i < outputSize; i++)
output[byteOff++] = outputByte[i];
// Bug 4266772. Update statuses only when output buffer has been
// updated. When ConversionBufferFullException() has been throwed
// we want to keep old statuses for next call.
shiftout = newshiftout;
SODesDefined = newSODesDefined;
SS2DesDefined = newSS2DesDefined;
SS3DesDefined = newSS3DesDefined;
}
return byteOff - outOff;
}
}