1/*
2 * Copyright (C) 2010 Google Inc.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32
33#include "modules/filesystem/FileWriterBase.h"
34
35#include "core/events/ProgressEvent.h"
36#include "core/fileapi/Blob.h"
37#include "core/fileapi/FileError.h"
38#include "public/platform/WebFileWriter.h"
39
40namespace blink {
41
42FileWriterBase::~FileWriterBase()
43{
44}
45
46void FileWriterBase::initialize(PassOwnPtr<WebFileWriter> writer, long long length)
47{
48    ASSERT(!m_writer);
49    ASSERT(length >= 0);
50    m_writer = writer;
51    m_length = length;
52}
53
54FileWriterBase::FileWriterBase()
55    : m_position(0)
56{
57}
58
59void FileWriterBase::seekInternal(long long position)
60{
61    if (position > m_length)
62        position = m_length;
63    else if (position < 0)
64        position = m_length + position;
65    if (position < 0)
66        position = 0;
67    m_position = position;
68}
69
70} // namespace blink
71