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// CheckedOutputStream.java - Compute checksum of data being written.
/* Copyright (C) 1999 Cygnus Solutions
This file is part of libgcj.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
package java.util.zip;
import java.io.FilterOutputStream;
import java.io.OutputStream;
import java.io.IOException;
/**
* @author Tom Tromey
* @date May 17, 1999
*/
/* Written using on-line Java Platform 1.2 API Specification
* and JCL book.
* Believed complete and correct.
*/
public class CheckedOutputStream extends FilterOutputStream
{
public CheckedOutputStream (OutputStream out, Checksum cksum)
{
super (out);
this.sum = cksum;
}
public Checksum getChecksum ()
{
return sum;
}
public void write (int bval) throws IOException
{
out.write(bval);
sum.update(bval);
}
public void write (byte[] buf, int off, int len) throws IOException
{
out.write(buf, off, len);
sum.update(buf, off, len);
}
// The checksum object.
private Checksum sum;
}
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