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/**
* \cond LICENSE
* Arara -- the cool TeX automation tool
* Copyright (c) 2012, Paulo Roberto Massa Cereda
* 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 the project's author nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE
* COPYRIGHT HOLDER OR 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.
* \endcond
*
* TeeOutputStream: This class implements an output stream that handles other
* streams, so the flow is propagated to all of them in an easy way.
*/
// package definition
package com.github.arara.utils;
// needed importa
import java.io.IOException;
import java.io.OutputStream;
/**
* Implements an output stream that handles other streams, so the flow is
* propagated to all of them in an easy way.
*
* @author Paulo Roberto Massa Cereda
* @version 3.0
* @since 2.0
*/
public class TeeOutputStream extends OutputStream {
// the list of the output streams
private final OutputStream[] streams;
/**
* Constructor.
*
* @param outputStreams An array containing the output streams.
*/
public TeeOutputStream(OutputStream... outputStreams) {
// set the array
streams = outputStreams;
}
/**
* Writes the byte to all the output streams.
*
* @param b The byte to write.
* @throws IOException Exception if an error ocurred.
*/
@Override
public void write(int b) throws IOException {
// for every stream
for (OutputStream ostream : streams) {
// write the byte
ostream.write(b);
}
}
/**
* Writes an array of bytes to all the output streams.
*
* @param b The bytes to write.
* @param offset The offset.
* @param length Number of bytes.
* @throws IOException Exception if an error ocurred.
*/
@Override
public void write(byte[] b, int offset, int length) throws IOException {
// for every stream
for (OutputStream ostream : streams) {
// write the array
ostream.write(b, offset, length);
}
}
/**
* Flushes the stream.
*
* @throws IOException Exception if an error ocurred.
*/
@Override
public void flush() throws IOException {
// for every stream
for (OutputStream ostream : streams) {
// flush the stream
ostream.flush();
}
}
/**
* Closes the stream.
*
* @throws IOException Exception if an error ocurred.
*/
@Override
public void close() throws IOException {
// for every stream
for (OutputStream ostream : streams) {
// try to close the stream
forceClose(ostream);
}
}
/**
* Forces the stream to close without raising exceptions.
*
* @param ostream The stream.
*/
private void forceClose(OutputStream ostream) {
// try to close
try {
// close it
ostream.close();
} catch (IOException exception) {
// do nothing
}
}
}
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