/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;
/**
* A Proxy stream which acts as expected, that is it passes the method
* calls on to the proxied stream and doesn't change which methods are
* being called. It is an alternative base class to FilterOutputStream
* to increase reusability.
*
* @author Stephen Colebourne
* @version $Id: ProxyOutputStream.java 610010 2008-01-08 14:50:59Z niallp $
*/
public class ProxyOutputStream extends FilterOutputStream {
/**
* Constructs a new ProxyOutputStream.
*
* @param proxy the OutputStream to delegate to
*/
public ProxyOutputStream(OutputStream proxy) {
super(proxy);
// the proxy is stored in a protected superclass variable named 'out'
}
/**
* Invokes the delegate's <code>write(int)</code> method.
* @param idx the byte to write
* @throws IOException if an I/O error occurs
*/
public void write(int idx) throws IOException {
out.write(idx);
}
/**
* Invokes the delegate's <code>write(byte[])</code> method.
* @param bts the bytes to write
* @throws IOException if an I/O error occurs
*/
public void write(byte[] bts) throws IOException {
out.write(bts);
}
/**
* Invokes the delegate's <code>write(byte[])</code> method.
* @param bts the bytes to write
* @param st The start offset
* @param end The number of bytes to write
* @throws IOException if an I/O error occurs
*/
public void write(byte[] bts, int st, int end) throws IOException {
out.write(bts, st, end);
}
/**
* Invokes the delegate's <code>flush()</code> method.
* @throws IOException if an I/O error occurs
*/
public void flush() throws IOException {
out.flush();
}
/**
* Invokes the delegate's <code>close()</code> method.
* @throws IOException if an I/O error occurs
*/
public void close() throws IOException {
out.close();
}
}