1/*
2 * Copyright 2012, Google Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 *     * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *     * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *     * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32package org.jf.util;
33
34import javax.annotation.Nonnull;
35import java.io.IOException;
36import java.io.OutputStream;
37import java.io.RandomAccessFile;
38
39public class RandomAccessFileOutputStream extends OutputStream {
40    private int filePosition;
41    @Nonnull private final RandomAccessFile raf;
42
43    public RandomAccessFileOutputStream(@Nonnull RandomAccessFile raf, int startFilePosition) {
44        this.filePosition = startFilePosition;
45        this.raf = raf;
46    }
47
48    @Override public void write(int b) throws IOException {
49        raf.seek(filePosition);
50        filePosition++;
51        raf.write(b);
52    }
53
54    @Override public void write(byte[] b) throws IOException {
55        raf.seek(filePosition);
56        filePosition += b.length;
57        raf.write(b);
58    }
59
60    @Override public void write(byte[] b, int off, int len) throws IOException {
61        raf.seek(filePosition);
62        filePosition += len;
63        raf.write(b, off, len);
64    }
65}
66