/**************************************************************************
* 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, *
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE *
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN *
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
**************************************************************************/
/*
** $Id: FilterInputStream.java,v 1.1.1.1 2004/07/12 14:07:45 cvs Exp $
*/
package java.io;
public class FilterInputStream extends InputStream {
protected volatile InputStream in;
protected FilterInputStream(InputStream input) {
in = input;
}
public int read() throws IOException {
return in.read();
}
public int read(byte[] b) throws IOException, NullPointerException {
// if b=null then b.length will trigger the NullPointerException
return read(b, 0, b.length);
// subclasses only overwrite the read(byte[],int,int) --> by calling it
// we will use the read defined by the subclass
// this important for the BufferedInputStream, since otherwise you would read immediately
// from the underlying stream while still unread bytes are in the buffer from the stream
}
public int read(byte[] b, int off, int len)
throws IOException, NullPointerException, ArrayIndexOutOfBoundsException {
//no argument check are done, this should be handled by 'in'
return in.read(b, off, len);
}
public long skip(long n) throws IOException {
return in.skip(n);
}
public int available() throws IOException {
return in.available();
}
public void close() throws IOException {
in.close();
}
public void mark(int readLimit) {
in.mark(readLimit);
}
public void reset()
throws IOException
{
in.reset();
}
public boolean markSupported() {
return in.markSupported();
}
}