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Contains common utility code, reusable outside Hudson.
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/**
 * The MIT License
 *
 * Copyright (c) 2010-2011 Sonatype, Inc. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package org.hudsonci.utils.io;

import java.io.IOException;
import java.io.OutputStream;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Delegates to another {@link OutputStream}.
 *
 * @author Jason Dillon
 * @since 2.1.0
 */
public class DelegatingOutputStream
    extends OutputStream
{
    private OutputStream delegate;

    public DelegatingOutputStream(final OutputStream delegate) {
        setDelegate(delegate);
    }

    protected OutputStream getDelegate() {
        return delegate;
    }

    protected void setDelegate(final OutputStream delegate) {
        this.delegate = checkNotNull(delegate);
    }

    public void write(final int b) throws IOException {
        getDelegate().write(b);
    }

    @Override
    public void write(final byte[] b) throws IOException {
        getDelegate().write(b);
    }

    @Override
    public void write(final byte[] b, final int off, final int len) throws IOException {
        getDelegate().write(b, off, len);
    }

    @Override
    public void flush() throws IOException {
        getDelegate().flush();
    }

    @Override
    public void close() throws IOException {
        getDelegate().close();
    }
}