xref: /external/smali/util/src/main/java/org/jf/util/RandomAccessFileOutputStream.java

/*
 * Copyright 2012, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. 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
 * OWNER 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.
 */

package org.jf.util;

import javax.annotation.Nonnull;
import java.io.IOException;
import java.io.OutputStream;
import java.io.RandomAccessFile;

public class RandomAccessFileOutputStream extends OutputStream {
    private int filePosition;
    @Nonnull private final RandomAccessFile raf;

    public RandomAccessFileOutputStream(@Nonnull RandomAccessFile raf, int startFilePosition) {
        this.filePosition = startFilePosition;
        this.raf = raf;
    }

    @Override public void write(int b) throws IOException {
        raf.seek(filePosition);
        filePosition++;
        raf.write(b);
    }

    @Override public void write(byte[] b) throws IOException {
        raf.seek(filePosition);
        filePosition += b.length;
        raf.write(b);
    }

    @Override public void write(byte[] b, int off, int len) throws IOException {
        raf.seek(filePosition);
        filePosition += len;
        raf.write(b, off, len);
    }
}