| /* |
| * 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.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * Classic splitter of {@link OutputStream}. Named after the UNIX 'tee' command. It allows a stream to be branched off |
| * so there are now two streams. |
| */ |
| public class TeeOutputStream extends ProxyOutputStream { |
| |
| /** |
| * The second OutputStream to write to. |
| * |
| * TODO Make private and final in 3.0. |
| */ |
| protected OutputStream branch; |
| |
| /** |
| * Constructs a TeeOutputStream. |
| * |
| * @param out the main OutputStream |
| * @param branch the second OutputStream |
| */ |
| public TeeOutputStream(final OutputStream out, final OutputStream branch) { |
| super(out); |
| this.branch = branch; |
| } |
| |
| /** |
| * Closes both output streams. |
| * <p> |
| * If closing the main output stream throws an exception, attempt to close the branch output stream. |
| * </p> |
| * |
| * <p> |
| * If closing the main and branch output streams both throw exceptions, which exceptions is thrown by this method is |
| * currently unspecified and subject to change. |
| * </p> |
| * |
| * @throws IOException if an I/O error occurs. |
| */ |
| @Override |
| public void close() throws IOException { |
| try { |
| super.close(); |
| } finally { |
| this.branch.close(); |
| } |
| } |
| |
| /** |
| * Flushes both streams. |
| * |
| * @throws IOException if an I/O error occurs. |
| */ |
| @Override |
| public void flush() throws IOException { |
| super.flush(); |
| this.branch.flush(); |
| } |
| |
| /** |
| * Writes the bytes to both streams. |
| * |
| * @param b the bytes to write |
| * @throws IOException if an I/O error occurs. |
| */ |
| @Override |
| public synchronized void write(final byte[] b) throws IOException { |
| super.write(b); |
| this.branch.write(b); |
| } |
| |
| /** |
| * Writes the specified bytes to both streams. |
| * |
| * @param b the bytes to write |
| * @param off The start offset |
| * @param len The number of bytes to write |
| * @throws IOException if an I/O error occurs. |
| */ |
| @Override |
| public synchronized void write(final byte[] b, final int off, final int len) throws IOException { |
| super.write(b, off, len); |
| this.branch.write(b, off, len); |
| } |
| |
| /** |
| * Writes a byte to both streams. |
| * |
| * @param b the byte to write |
| * @throws IOException if an I/O error occurs. |
| */ |
| @Override |
| public synchronized void write(final int b) throws IOException { |
| super.write(b); |
| this.branch.write(b); |
| } |
| |
| } |