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Diffstat (limited to 'Master/texmf-dist/source/support/arara/src/main/java/com/github/arara/utils/TeeOutputStream.java')
-rw-r--r-- | Master/texmf-dist/source/support/arara/src/main/java/com/github/arara/utils/TeeOutputStream.java | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/Master/texmf-dist/source/support/arara/src/main/java/com/github/arara/utils/TeeOutputStream.java b/Master/texmf-dist/source/support/arara/src/main/java/com/github/arara/utils/TeeOutputStream.java new file mode 100644 index 00000000000..95aa32e6f30 --- /dev/null +++ b/Master/texmf-dist/source/support/arara/src/main/java/com/github/arara/utils/TeeOutputStream.java @@ -0,0 +1,155 @@ +/** + * \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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