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#include "platform/blob/BlobData.h"
33
34#include "platform/UUID.h"
35#include "platform/blob/BlobRegistry.h"
36#include "platform/text/LineEnding.h"
37#include "wtf/ArrayBuffer.h"
38#include "wtf/ArrayBufferView.h"
39#include "wtf/OwnPtr.h"
40#include "wtf/PassRefPtr.h"
41#include "wtf/RefPtr.h"
42#include "wtf/Vector.h"
43#include "wtf/text/CString.h"
44#include "wtf/text/TextEncoding.h"
45
46namespace blink {
47
48const long long BlobDataItem::toEndOfFile = -1;
49
50RawData::RawData()
51{
52}
53
54void RawData::detachFromCurrentThread()
55{
56}
57
58void BlobDataItem::detachFromCurrentThread()
59{
60    data->detachFromCurrentThread();
61    path = path.isolatedCopy();
62    fileSystemURL = fileSystemURL.copy();
63}
64
65PassOwnPtr<BlobData> BlobData::create()
66{
67    return adoptPtr(new BlobData());
68}
69
70void BlobData::detachFromCurrentThread()
71{
72    m_contentType = m_contentType.isolatedCopy();
73    for (size_t i = 0; i < m_items.size(); ++i)
74        m_items.at(i).detachFromCurrentThread();
75}
76
77void BlobData::appendData(PassRefPtr<RawData> data, long long offset, long long length)
78{
79    m_items.append(BlobDataItem(data, offset, length));
80}
81
82void BlobData::appendFile(const String& path)
83{
84    m_items.append(BlobDataItem(path));
85}
86
87void BlobData::appendFile(const String& path, long long offset, long long length, double expectedModificationTime)
88{
89    m_items.append(BlobDataItem(path, offset, length, expectedModificationTime));
90}
91
92void BlobData::appendBlob(PassRefPtr<BlobDataHandle> dataHandle, long long offset, long long length)
93{
94    m_items.append(BlobDataItem(dataHandle, offset, length));
95}
96
97void BlobData::appendFileSystemURL(const KURL& url, long long offset, long long length, double expectedModificationTime)
98{
99    m_items.append(BlobDataItem(url, offset, length, expectedModificationTime));
100}
101
102void BlobData::appendText(const String& text, bool doNormalizeLineEndingsToNative)
103{
104    RefPtr<RawData> data = RawData::create();
105    Vector<char>* buffer = data->mutableData();
106
107    CString utf8Text = UTF8Encoding().normalizeAndEncode(text, WTF::EntitiesForUnencodables);
108    if (doNormalizeLineEndingsToNative) {
109        normalizeLineEndingsToNative(utf8Text, *buffer);
110    } else {
111        buffer->append(utf8Text.data(), utf8Text.length());
112    }
113
114    m_items.append(BlobDataItem(data.release()));
115}
116
117void BlobData::appendBytes(const void* bytes, size_t length)
118{
119    RefPtr<RawData> data = RawData::create();
120    Vector<char>* buffer = data->mutableData();
121    buffer->append(static_cast<const char *>(bytes), length);
122    m_items.append(BlobDataItem(data.release()));
123}
124
125void BlobData::appendArrayBuffer(const ArrayBuffer* arrayBuffer)
126{
127    appendBytes(arrayBuffer->data(), arrayBuffer->byteLength());
128}
129
130void BlobData::appendArrayBufferView(const ArrayBufferView* arrayBufferView)
131{
132    appendBytes(arrayBufferView->baseAddress(), arrayBufferView->byteLength());
133}
134
135void BlobData::swapItems(BlobDataItemList& items)
136{
137    m_items.swap(items);
138}
139
140long long BlobData::length() const
141{
142    long long length = 0;
143
144    for (Vector<BlobDataItem>::const_iterator it = m_items.begin(); it != m_items.end(); ++it) {
145        const BlobDataItem& item = *it;
146        if (item.length != BlobDataItem::toEndOfFile) {
147            ASSERT(item.length >= 0);
148            length += item.length;
149            continue;
150        }
151
152        switch (item.type) {
153        case BlobDataItem::Data:
154            length += item.data->length();
155            break;
156        case BlobDataItem::File:
157        case BlobDataItem::Blob:
158        case BlobDataItem::FileSystemURL:
159            return BlobDataItem::toEndOfFile;
160        }
161    }
162    return length;
163}
164
165BlobDataHandle::BlobDataHandle()
166    : m_uuid(createCanonicalUUIDString())
167    , m_size(0)
168{
169    BlobRegistry::registerBlobData(m_uuid, BlobData::create());
170}
171
172BlobDataHandle::BlobDataHandle(PassOwnPtr<BlobData> data, long long size)
173    : m_uuid(createCanonicalUUIDString())
174    , m_type(data->contentType().isolatedCopy())
175    , m_size(size)
176{
177    BlobRegistry::registerBlobData(m_uuid, data);
178}
179
180BlobDataHandle::BlobDataHandle(const String& uuid, const String& type, long long size)
181    : m_uuid(uuid.isolatedCopy())
182    , m_type(type.isolatedCopy())
183    , m_size(size)
184{
185    BlobRegistry::addBlobDataRef(m_uuid);
186}
187
188BlobDataHandle::~BlobDataHandle()
189{
190    BlobRegistry::removeBlobDataRef(m_uuid);
191}
192
193} // namespace blink
194