05b565f4f2
Implements the BPositionIO interface on top of a BDataIO, requiring the
{Read,Write}At() accesses to be sequential.
38 lines
914 B
C++
38 lines
914 B
C++
/*
|
|
* Copyright 2014, Ingo Weinhold, ingo_weinhold@gmx.de.
|
|
* Distributed under the terms of the MIT License.
|
|
*/
|
|
#ifndef _DATA_POSITION_IO_WRAPPER_H_
|
|
#define _DATA_POSITION_IO_WRAPPER_H_
|
|
|
|
|
|
#include <DataIO.h>
|
|
|
|
|
|
class BDataPositionIOWrapper : public BPositionIO {
|
|
public:
|
|
BDataPositionIOWrapper(BDataIO* io);
|
|
~BDataPositionIOWrapper();
|
|
|
|
virtual ssize_t Read(void* buffer, size_t size);
|
|
virtual ssize_t Write(const void* buffer, size_t size);
|
|
|
|
virtual ssize_t ReadAt(off_t position, void* buffer,
|
|
size_t size);
|
|
virtual ssize_t WriteAt(off_t position, const void* buffer,
|
|
size_t size);
|
|
|
|
virtual off_t Seek(off_t position, uint32 seekMode);
|
|
virtual off_t Position() const;
|
|
|
|
virtual status_t SetSize(off_t size);
|
|
virtual status_t GetSize(off_t* size) const;
|
|
|
|
private:
|
|
BDataIO* fIO;
|
|
off_t fPosition;
|
|
};
|
|
|
|
|
|
#endif // _DATA_POSITION_IO_WRAPPER_H_
|