86 lines
3.0 KiB
Java
86 lines
3.0 KiB
Java
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/*
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* Janino - An embedded Java[TM] compiler
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*
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* Copyright (c) 2001-2010, Arno Unkrig
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
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* following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
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* following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.codehaus.janino.util;
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import java.io.FilterReader;
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import java.io.IOException;
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import java.io.Reader;
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import java.io.Writer;
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/**
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* A {@link java.io.FilterReader} that copies the bytes being passed through
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* to a given {@link java.io.Writer}. This is in analogy with the UNIX "tee" command.
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*/
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public
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class TeeReader extends FilterReader {
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private final Writer out;
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private final boolean closeWriterOnEOF;
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public
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TeeReader(Reader in, Writer out, boolean closeWriterOnEof) {
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super(in);
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this.out = out;
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this.closeWriterOnEOF = closeWriterOnEof;
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}
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@Override public void
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close() throws IOException {
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this.in.close();
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this.out.close();
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}
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@Override public int
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read() throws IOException {
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int c = this.in.read();
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if (c == -1) {
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if (this.closeWriterOnEOF) {
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this.out.close();
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} else {
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this.out.flush();
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}
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} else {
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this.out.write(c);
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}
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return c;
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}
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@Override public int
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read(char[] cbuf, int off, int len) throws IOException {
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int bytesRead = this.in.read(cbuf, off, len);
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if (bytesRead == -1) {
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if (this.closeWriterOnEOF) {
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this.out.close();
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} else {
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this.out.flush();
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}
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} else {
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this.out.write(cbuf, off, bytesRead);
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}
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return bytesRead;
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}
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}
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