?? countingoutputstream.java
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/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.io.output;
import java.io.IOException;
import java.io.OutputStream;
/**
* Used in debugging, it counts the number of bytes that pass
* through it.
*
* @author <a href="mailto:bayard@apache.org">Henri Yandell</a>
* @version $Id: CountingOutputStream.java 155419 2005-02-26 13:02:41Z dirkv $
*/
public class CountingOutputStream extends ProxyOutputStream {
private int count;
/**
* Constructs a CountingOutputStream.
* @param out the OutputStream to write to
*/
public CountingOutputStream( OutputStream out ) {
super(out);
}
/** @see java.io.OutputStream#write(byte[]) */
public void write(byte[] b) throws IOException {
count += b.length;
super.write(b);
}
/** @see java.io.OutputStream#write(byte[], int, int) */
public void write(byte[] b, int off, int len) throws IOException {
count += len;
super.write(b, off, len);
}
/** @see java.io.OutputStream#write(int) */
public void write(int b) throws IOException {
count++;
super.write(b);
}
/**
* The number of bytes that have passed through this stream.
* @return the number of bytes accumulated
*/
public int getCount() {
return this.count;
}
/**
* Set the count back to 0.
*
* @return the count previous to resetting.
*/
public synchronized int resetCount() {
int tmp = this.count;
this.count = 0;
return tmp;
}
}
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