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/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
41 namespace WebCore {
42
write(Blob * data,ExceptionState & exceptionState)43 void 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
seek(long long position,ExceptionState & exceptionState)64 void FileWriterSync::seek(long long position, ExceptionState& exceptionState)
65 {
66 ASSERT(writer());
67 ASSERT(m_complete);
68 seekInternal(position);
69 }
70
truncate(long long offset,ExceptionState & exceptionState)71 void 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
didWrite(long long bytes,bool complete)91 void FileWriterSync::didWrite(long long bytes, bool complete)
92 {
93 ASSERT(m_error == FileError::OK);
94 ASSERT(!m_complete);
95 #ifndef NDEBUG
96 m_complete = complete;
97 #else
98 ASSERT_UNUSED(complete, complete);
99 #endif
100 }
101
didTruncate()102 void FileWriterSync::didTruncate()
103 {
104 ASSERT(m_error == FileError::OK);
105 ASSERT(!m_complete);
106 #ifndef NDEBUG
107 m_complete = true;
108 #endif
109 }
110
didFail(blink::WebFileError error)111 void FileWriterSync::didFail(blink::WebFileError error)
112 {
113 ASSERT(m_error == FileError::OK);
114 m_error = static_cast<FileError::ErrorCode>(error);
115 ASSERT(!m_complete);
116 #ifndef NDEBUG
117 m_complete = true;
118 #endif
119 }
120
FileWriterSync()121 FileWriterSync::FileWriterSync()
122 : m_error(FileError::OK)
123 #ifndef NDEBUG
124 , m_complete(true)
125 #endif
126 {
127 ScriptWrappable::init(this);
128 }
129
prepareForWrite()130 void FileWriterSync::prepareForWrite()
131 {
132 ASSERT(m_complete);
133 m_error = FileError::OK;
134 #ifndef NDEBUG
135 m_complete = false;
136 #endif
137 }
138
~FileWriterSync()139 FileWriterSync::~FileWriterSync()
140 {
141 }
142
143
144 } // namespace WebCore
145