1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/*
* Copyright (C) 2010 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.
*/
#include "config.h"
#include "core/fileapi/BlobBuilder.h"
#include "core/fileapi/Blob.h"
#include "core/fileapi/File.h"
#include "platform/text/LineEnding.h"
#include "wtf/ArrayBuffer.h"
#include "wtf/ArrayBufferView.h"
#include "wtf/PassRefPtr.h"
#include "wtf/Vector.h"
#include "wtf/text/CString.h"
#include "wtf/text/TextEncoding.h"
namespace WebCore {
BlobBuilder::BlobBuilder()
: m_size(0)
{
}
Vector<char>& BlobBuilder::getBuffer()
{
// If the last item is not a data item, create one. Otherwise, we simply append the new string to the last data item.
if (m_items.isEmpty() || m_items[m_items.size() - 1].type != BlobDataItem::Data)
m_items.append(BlobDataItem(RawData::create()));
return *m_items[m_items.size() - 1].data->mutableData();
}
void BlobBuilder::append(const String& text, const String& endingType)
{
CString utf8Text = UTF8Encoding().normalizeAndEncode(text, WTF::EntitiesForUnencodables);
Vector<char>& buffer = getBuffer();
size_t oldSize = buffer.size();
if (endingType == "native")
normalizeLineEndingsToNative(utf8Text, buffer);
else {
ASSERT(endingType == "transparent");
buffer.append(utf8Text.data(), utf8Text.length());
}
m_size += buffer.size() - oldSize;
}
void BlobBuilder::append(ArrayBuffer* arrayBuffer)
{
if (!arrayBuffer)
return;
appendBytesData(arrayBuffer->data(), arrayBuffer->byteLength());
}
void BlobBuilder::append(ArrayBufferView* arrayBufferView)
{
if (!arrayBufferView)
return;
appendBytesData(arrayBufferView->baseAddress(), arrayBufferView->byteLength());
}
void BlobBuilder::append(Blob* blob)
{
if (!blob)
return;
if (blob->hasBackingFile()) {
File* file = toFile(blob);
// If the blob is file that is not snapshoted, capture the snapshot now.
// FIXME: This involves synchronous file operation. We need to figure out how to make it asynchronous.
long long snapshotSize;
double snapshotModificationTime;
file->captureSnapshot(snapshotSize, snapshotModificationTime);
m_size += snapshotSize;
if (!file->fileSystemURL().isEmpty())
m_items.append(BlobDataItem(file->fileSystemURL(), 0, snapshotSize, snapshotModificationTime));
else
m_items.append(BlobDataItem(file->path(), 0, snapshotSize, snapshotModificationTime));
} else {
long long blobSize = static_cast<long long>(blob->size());
m_size += blobSize;
m_items.append(BlobDataItem(blob->blobDataHandle(), 0, blobSize));
}
}
void BlobBuilder::appendBytesData(const void* data, size_t length)
{
Vector<char>& buffer = getBuffer();
size_t oldSize = buffer.size();
buffer.append(static_cast<const char*>(data), length);
m_size += buffer.size() - oldSize;
}
PassRefPtr<Blob> BlobBuilder::createBlob(const String& contentType)
{
OwnPtr<BlobData> blobData = BlobData::create();
blobData->setContentType(contentType);
blobData->swapItems(m_items);
RefPtr<Blob> blob = Blob::create(BlobDataHandle::create(blobData.release(), m_size));
// After creating a blob from the current blob data, we do not need to keep the data around any more.
// Instead, we only need to keep a reference to the blob data just created.
m_items.append(BlobDataItem(blob->blobDataHandle(), 0, m_size));
return blob.release();
}
PassRefPtr<File> BlobBuilder::createFile(const String& contentType, const String& fileName, double modificationTime)
{
OwnPtr<BlobData> blobData = BlobData::create();
blobData->setContentType(contentType);
blobData->swapItems(m_items);
RefPtr<File> file = File::create(fileName, modificationTime, BlobDataHandle::create(blobData.release(), m_size));
// After creating a file from the current blob data, we do not need to keep the data around any more.
// Instead, we only need to keep a reference to the blob data just created.
m_items.append(BlobDataItem(file->blobDataHandle(), 0, m_size));
return file.release();
}
} // namespace WebCore
|
