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/FileWriterSync.h"
34
35#include "bindings/core/v8/ExceptionState.h"
36#include "core/dom/ExceptionCode.h"
37#include "core/fileapi/Blob.h"
38#include "public/platform/WebFileWriter.h"
39#include "public/platform/WebURL.h"
40
41namespace blink {
42
43void FileWriterSync::write(Blob* data, ExceptionState& exceptionState)
44{
45    ASSERT(writer());
46    ASSERT(m_complete);
47    if (!data) {
48        exceptionState.throwDOMException(TypeMismatchError, FileError::typeMismatchErrorMessage);
49        return;
50    }
51
52    prepareForWrite();
53    writer()->write(position(), data->uuid());
54    ASSERT(m_complete);
55    if (m_error) {
56        FileError::throwDOMException(exceptionState, m_error);
57        return;
58    }
59    setPosition(position() + data->size());
60    if (position() > length())
61        setLength(position());
62}
63
64void FileWriterSync::seek(long long position, ExceptionState& exceptionState)
65{
66    ASSERT(writer());
67    ASSERT(m_complete);
68    seekInternal(position);
69}
70
71void FileWriterSync::truncate(long long offset, ExceptionState& exceptionState)
72{
73    ASSERT(writer());
74    ASSERT(m_complete);
75    if (offset < 0) {
76        exceptionState.throwDOMException(InvalidStateError, FileError::invalidStateErrorMessage);
77        return;
78    }
79    prepareForWrite();
80    writer()->truncate(offset);
81    ASSERT(m_complete);
82    if (m_error) {
83        FileError::throwDOMException(exceptionState, m_error);
84        return;
85    }
86    if (offset < position())
87        setPosition(offset);
88    setLength(offset);
89}
90
91void FileWriterSync::didWrite(long long bytes, bool complete)
92{
93    ASSERT(m_error == FileError::OK);
94    ASSERT(!m_complete);
95#if ENABLE(ASSERT)
96    m_complete = complete;
97#else
98    ASSERT_UNUSED(complete, complete);
99#endif
100}
101
102void FileWriterSync::didTruncate()
103{
104    ASSERT(m_error == FileError::OK);
105    ASSERT(!m_complete);
106#if ENABLE(ASSERT)
107    m_complete = true;
108#endif
109}
110
111void FileWriterSync::didFail(WebFileError error)
112{
113    ASSERT(m_error == FileError::OK);
114    m_error = static_cast<FileError::ErrorCode>(error);
115    ASSERT(!m_complete);
116#if ENABLE(ASSERT)
117    m_complete = true;
118#endif
119}
120
121FileWriterSync::FileWriterSync()
122    : m_error(FileError::OK)
123#if ENABLE(ASSERT)
124    , m_complete(true)
125#endif
126{
127}
128
129void FileWriterSync::prepareForWrite()
130{
131    ASSERT(m_complete);
132    m_error = FileError::OK;
133#if ENABLE(ASSERT)
134    m_complete = false;
135#endif
136}
137
138FileWriterSync::~FileWriterSync()
139{
140}
141
142
143} // namespace blink
144