/**************************************************************************
* Copyright (c) 2001 by Punch Telematix. All rights reserved. *
* *
* Redistribution and use in source and binary forms, with or without *
* modification, are permitted provided that the following conditions *
* are met: *
* 1. Redistributions of source code must retain the above copyright *
* notice, this list of conditions and the following disclaimer. *
* 2. Redistributions in binary form must reproduce the above copyright *
* notice, this list of conditions and the following disclaimer in the *
* documentation and/or other materials provided with the distribution. *
* 3. Neither the name of Punch Telematix nor the names of *
* other contributors may be used to endorse or promote products *
* derived from this software without specific prior written permission.*
* *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED *
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. *
* IN NO EVENT SHALL PUNCH TELEMATIX OR OTHER CONTRIBUTORS BE LIABLE *
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF *
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR *
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, *
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
**************************************************************************/
/*
** $Id: ASCIIDecoder.java,v 1.1.1.1 2004/07/12 14:07:47 cvs Exp $
*/
package wonka.decoders;
import java.io.*;
public class ASCIIDecoder extends Decoder {
public byte[] cToB(char[] chars, int off, int len){
byte[] bytes = new byte[len];
int o = off+len;
while(--len >= 0){
bytes[len] = (byte)chars[--o];
}
return bytes;
}
public char[] bToC(byte[] bytes, int off, int len){
char[] chars = new char[len];
int o = off+len;
int mask = 0x7f;
while(--len >= 0){
chars[len] = (char) (mask & bytes[--o]);
}
return chars;
}
public int cFromStream(InputStream in, char[] chars, int off, int len) throws IOException {
byte[] bytes = new byte[len];
int rd = in.read(bytes,0,len);
int i = rd;
int o = off+rd;
int mask = 0x7f;
while(--i >= 0){
chars[--o] = (char)(mask & bytes[i]);
}
return rd;
}
public int getChar(InputStream in) throws IOException{
int rd = in.read();
if(rd > 0){
rd &= 0x7f;
}
return rd;
}
public String getEncoding(){
return "ASCII";
}
}