file_cpi_instance_data.hpp

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//  Copyright (c) 2005-2009 Hartmut Kaiser
//  Copyright (c) 2005-2007 Andre Merzky (andre@merzky.net)
//  Copyright (c) 2005 Michel Zandstra [michelzandstra@gmail.com]
// 
//  Distributed under the Boost Software License, Version 1.0. (See accompanying 
//  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef SAGA_SAGA_ADAPTORS_FILE_CPI_INSTANCE_DATA_HPP
#define SAGA_SAGA_ADAPTORS_FILE_CPI_INSTANCE_DATA_HPP

#include <saga/saga/packages/filesystem/file.hpp>
#include <saga/saga/adaptors/config.hpp>
#include <saga/saga/types.hpp>
#include <saga/saga/adaptors/instance_data_base.hpp>
#include <saga/saga/adaptors/packages/namespace_entry_cpi_instance_data.hpp>

namespace saga { namespace adaptors { namespace v1_0 
{
  //  Instance data held by the SAGA engine/package
  //  This should be used as a base class when adding additional instance 
  //  data for an adaptor.
  struct file_cpi_instance_data 
      : public namespace_entry_cpi_instance_data
  {
    saga::off_t pointer_;  // current file pointer position

    file_cpi_instance_data (std::string location, int mode, 
            saga::off_t pointer = 0)
        : namespace_entry_cpi_instance_data(location, mode), 
          pointer_  (pointer)
    {
    }
  };
  
} } } // namespace saga::adaptors::v1_0

#endif // SAGA_SAGA_ADAPTORS_FILE_CPI_INSTANCE_DATA_HPP