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/* interface/dataprovider.h - Interface for data sources
Copyright (C) 2003 Klar�lvdalens Datakonsult AB
This file is part of GPGME++.
GPGME++ is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
GPGME++ is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GPGME; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __GPGMEPP_INTERFACES_DATAPROVIDER_H__
#define __GPGMEPP_INTERFACES_DATAPROVIDER_H__
#include <sys/types.h>
#include <kdemacros.h>
namespace GpgME {
class TDE_EXPORT DataProvider {
public:
virtual ~DataProvider() {}
enum Operation {
Read, Write, Seek, Release
};
virtual bool isSupported( Operation op ) const = 0;
virtual ssize_t read( void * buffer, size_t bufSize ) = 0;
virtual ssize_t write( const void * buffer, size_t bufSize ) = 0;
virtual off_t seek( off_t offset, int whence ) = 0;
virtual void release() = 0;
};
} // namespace GpgME
#endif // __GPGMEPP_INTERFACES_DATAPROVIDER_H__
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