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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 FileStream_h
#define FileStream_h
#if ENABLE(FILE_READER) || ENABLE(FILE_WRITER)
#include "FileStreamClient.h"
#include "FileSystem.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class Blob;
class String;
// All methods are synchronous and should be called on File or Worker thread.
class FileStream : public RefCounted<FileStream> {
public:
static PassRefPtr<FileStream> create(FileStreamClient* client)
{
return adoptRef(new FileStream(client));
}
virtual ~FileStream();
void start();
void stop();
void openForRead(Blob*);
void openForWrite(const String& path);
void close();
void read(char* buffer, int length);
void write(Blob* blob, long long position, int length);
void truncate(long long position);
private:
FileStream(FileStreamClient*);
FileStreamClient* m_client;
PlatformFileHandle m_handle;
long long m_bytesProcessed;
long long m_totalBytesToRead;
};
} // namespace WebCore
#endif // ENABLE(FILE_READER) || ENABLE(FILE_WRITER)
#endif // FileStream_h
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