jlibs.core.io.TeeInputStream Maven / Gradle / Ivy
/**
* Copyright 2015 Santhosh Kumar Tekuri
*
* The JLibs authors license 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 jlibs.core.io;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* A FilterInputStream implemenation which writes the all the bytes that are read
* from given inputstream to specifed outputstream.
*
* @author Santhosh Kumar T
*/
public class TeeInputStream extends FilterInputStream{
private final OutputStream delegate;
private boolean closeDelegate;
public TeeInputStream(InputStream in, OutputStream delegate, boolean closeDelegate){
super(in);
this.delegate = delegate;
this.closeDelegate = closeDelegate;
}
@Override
public int read() throws IOException{
int ch = super.read();
if(ch!=-1)
delegate.write(ch);
return ch;
}
@Override
public int read(byte[] b, int off, int len) throws IOException{
len = super.read(b, off, len);
if(len>0)
delegate.write(b, off, len);
return len;
}
@Override
public void close() throws IOException{
try{
super.close();
}finally{
if(closeDelegate)
delegate.close();
}
}
}