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/*
* 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 "WebKitBlobBuilder.h"
#include "Blob.h"
#include "Document.h"
#include "ExceptionCode.h"
#include "File.h"
#include "HistogramSupport.h"
#include "LineEnding.h"
#include "ScriptCallStack.h"
#include "TextEncoding.h"
#include <wtf/ArrayBuffer.h>
#include <wtf/ArrayBufferView.h>
#include <wtf/PassRefPtr.h>
#include <wtf/Vector.h>
#include <wtf/text/AtomicString.h>
#include <wtf/text/CString.h>
namespace WebCore {
// FIXME: Move this file to BlobBuilder.cpp
enum BlobConstructorArrayBufferOrView {
BlobConstructorArrayBuffer,
BlobConstructorArrayBufferView,
BlobConstructorArrayBufferOrViewMax,
};
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().encode(text.characters(), text.length(), 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;
}
#if ENABLE(BLOB)
void BlobBuilder::append(ArrayBuffer* arrayBuffer)
{
HistogramSupport::histogramEnumeration("WebCore.Blob.constructor.ArrayBufferOrView", BlobConstructorArrayBuffer, BlobConstructorArrayBufferOrViewMax);
if (!arrayBuffer)
return;
appendBytesData(arrayBuffer->data(), arrayBuffer->byteLength());
}
void BlobBuilder::append(ArrayBufferView* arrayBufferView)
{
HistogramSupport::histogramEnumeration("WebCore.Blob.constructor.ArrayBufferOrView", BlobConstructorArrayBufferView, BlobConstructorArrayBufferOrViewMax);
if (!arrayBufferView)
return;
appendBytesData(arrayBufferView->baseAddress(), arrayBufferView->byteLength());
}
#endif
void BlobBuilder::append(Blob* blob)
{
if (!blob)
return;
if (blob->isFile()) {
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 ENABLE(FILE_SYSTEM)
if (!file->fileSystemURL().isEmpty())
m_items.append(BlobDataItem(file->fileSystemURL(), 0, snapshotSize, snapshotModificationTime));
else
#endif
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->url(), 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::getBlob(const String& contentType)
{
OwnPtr<BlobData> blobData = BlobData::create();
blobData->setContentType(Blob::normalizedContentType(contentType));
blobData->swapItems(m_items);
RefPtr<Blob> blob = Blob::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 URL of the blob just created.
m_items.append(BlobDataItem(blob->url(), 0, m_size));
return blob;
}
} // namespace WebCore
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