TeeOutputStream.java

/*
 * Copyright (C) 2020, Michael Dardis. and others
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0 which is available at
 * https://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package org.eclipse.jgit.util.io;

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

/**
 * An output stream that writes all data to two streams.
 *
 * @since 5.7
 */
public class TeeOutputStream extends OutputStream {

    private final OutputStream stream1;
    private final OutputStream stream2;

    /**
     * Initialize a tee output stream.
     *
     * @param stream1 first output stream
     * @param stream2 second output stream
     */
    public TeeOutputStream(OutputStream stream1, OutputStream stream2) {
        this.stream1 = stream1;
        this.stream2 = stream2;
    }

    /** {@inheritDoc} */
    @Override
    public void write(byte[] buf) throws IOException {
        this.stream1.write(buf);
        this.stream2.write(buf);
    }

    /** {@inheritDoc} */
    @Override
    public void write(byte[] buf, int off, int len) throws IOException {
        this.stream1.write(buf, off, len);
        this.stream2.write(buf, off, len);
    }

    /** {@inheritDoc} */
    @Override
    public void write(int b) throws IOException {
        this.stream1.write(b);
        this.stream2.write(b);
    }

    /** {@inheritDoc} */
    @Override
    public void flush() throws IOException {
        this.stream1.flush();
        this.stream2.flush();
    }

    /** {@inheritDoc} */
    @Override
    public void close() throws IOException {
        try {
            this.stream1.close();
        } finally {
            this.stream2.close();
        }
    }
}