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/*
========== licence begin GPL
Copyright (C) 2002-2003 SAP AG
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
========== licence end
*/
package com.sap.dbtech.util;
import java.io.*;
/**
* A reader which maps all bytes read from the input stream 1:1
* into chars, hereby using all bytes 0-255.
*/
public class RawByteReader
extends java.io.Reader
{
private InputStream stream;
public RawByteReader(InputStream stream)
{
this.stream=stream;
}
public int read(char[] cbuf,
int off,
int len)
throws IOException
{
try {
byte[] bbuf=new byte[len];
int result=stream.read(bbuf);
if(result==-1) {
return -1;
}
int i;
int off_i=off;
for(i=0; i<result; ++i, ++off_i) {
int current= bbuf[i] & 0xFF;
cbuf[off_i]=(char)current;
}
return result;
} catch(IOException ioEx) {
throw ioEx;
} catch(Exception ex) {
throw new IOException(ex.getMessage());
}
}
public long skip(long n)
throws IOException
{
return stream.skip(n);
}
public boolean markSupported()
{
return stream.markSupported();
}
public void mark(int readAheadLimit)
throws IOException
{
stream.mark(readAheadLimit);
}
public void reset()
throws IOException
{
stream.reset();
}
public void close()
throws IOException
{
stream.close();
}
}
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