#ifndef __MOBIUS_IO_READER_IMPL_NULL_H__
#define __MOBIUS_IO_READER_IMPL_NULL_H__

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// Mobius Forensic Toolkit
// Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017 Eduardo Aguiar
//
// This program 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, or (at your option) any later
// version.
//
// This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#include <mobius/io/reader_impl_base.h>
#include <mobius/exception.inc>
#include <stdexcept>

namespace mobius
{
namespace io
{
class reader_impl_null : public reader_impl_base
{
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief check if reader is seekable
  //! \return true/false
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  virtual bool
  is_seekable () const
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief check if reader is rewindable
  //! \return true/false
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  virtual bool
  is_rewindable () const
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief check if <b>reader.get_size</b> is available
  //! \return true/false
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  virtual bool
  is_sizeable () const
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief get data size
  //! \return data size in bytes
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  virtual size_type
  get_size () const override
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief set read position to the beginning of data
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  virtual void
  rewind ()
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief skip n bytes from current read position
  //! \param size number of bytes to skip ahead
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  virtual void
  skip (size_type size)
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief get read position
  //! \return read position in bytes from the beginning of data
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  virtual offset_type
  tell () const override
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief set read position
  //! \param offset offset in bytes
  //! \param w either beginning, current or end
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  virtual void
  seek (offset_type offset, whence_type w) override
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief read bytes from reader
  //! \param size size in bytes
  //! \return bytearray containing data
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  const mobius::bytearray
  read (size_type size) override
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }

  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  //! \brief check if end-of-file indicator is set
  //! \return true/false
  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  bool
  eof () const override
  {
    throw std::runtime_error (MOBIUS_EXCEPTION_MSG ("invalid reader"));
  }
};    

} // namespace io
} // namespace mobius

#endif
