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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.
*/
#ifndef BlobResourceHandle_h
#define BlobResourceHandle_h
#if ENABLE(BLOB)
#include "FileStreamClient.h"
#include "PlatformString.h"
#include "ResourceHandle.h"
#include <wtf/PassRefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class AsyncFileStream;
class BlobDataItem;
class BlobStorageData;
class FileStream;
class ResourceHandleClient;
class ResourceRequest;
class BlobResourceHandle : public FileStreamClient, public ResourceHandle {
public:
static PassRefPtr<BlobResourceHandle> create(PassRefPtr<BlobStorageData> blobData, const ResourceRequest& request, ResourceHandleClient* client, bool async = true)
{
return adoptRef(new BlobResourceHandle(blobData, request, client, async));
}
static void loadResourceSynchronously(PassRefPtr<BlobStorageData> blobData, const ResourceRequest& request, ResourceError& error, ResourceResponse& response, Vector<char>& data);
// FileStreamClient methods.
virtual void didGetSize(long long);
virtual void didOpen(bool);
virtual void didRead(int);
// ResourceHandle methods.
virtual void cancel();
void start();
int readSync(char*, int);
private:
BlobResourceHandle(PassRefPtr<BlobStorageData>, const ResourceRequest&, ResourceHandleClient*, bool async);
virtual ~BlobResourceHandle();
void getSizeForNext();
void seek();
void consumeData(const char* data, int bytesRead);
void failed(int errorCode);
void readAsync();
void readDataAsync(const BlobDataItem&);
void readFileAsync(const BlobDataItem&);
int readDataSync(const BlobDataItem&, char*, int);
int readFileSync(const BlobDataItem&, char*, int);
void notifyResponse();
void notifyResponseOnSuccess();
void notifyResponseOnError();
void notifyReceiveData(const char*, int);
void notifyFail(int errorCode);
void notifyFinish();
RefPtr<BlobStorageData> m_blobData;
bool m_async;
RefPtr<AsyncFileStream> m_asyncStream; // For asynchronous loading.
RefPtr<FileStream> m_stream; // For synchronous loading.
Vector<char> m_buffer;
Vector<long long> m_itemLengthList;
int m_errorCode;
bool m_aborted;
long long m_rangeOffset;
long long m_rangeEnd;
long long m_rangeSuffixLength;
long long m_totalRemainingSize;
long long m_currentItemReadSize;
unsigned m_sizeItemCount;
unsigned m_readItemCount;
bool m_fileOpened;
};
} // namespace WebCore
#endif // ENABLE(BLOB)
#endif // BlobResourceHandle_h
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