// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// 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/imagefile/ewf/segment_array.h>

namespace mobius
{
namespace imagefile
{
namespace ewf
{
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief create segment_array
//! \param url URL
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
segment_array::segment_array (const std::string& url)
 : segment_array_base (url)
{
}
 
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief return next extension
//! \param extension
//! \return next extension
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
const std::string
segment_array::get_next_extension (const std::string& extension) const
{
  std::string tmp_extension;

  if (extension == "E99")
    tmp_extension = "EAA";

  else
    {
      tmp_extension = extension;
      int pos = extension.length () - 1;
      bool carry = true;

      while (pos >= 0 && carry)
        {
          if (tmp_extension[pos] == '9')
            tmp_extension[pos] = '0';

          else if (tmp_extension[pos] == 'Z')
            tmp_extension[pos] = 'A';

          else
            {
              ++tmp_extension[pos];
              carry = false;
            }

          if (carry)
            --pos;
        }
    }

  return tmp_extension;
}

} // namespace ewf
} // namespace imagefile
} // namespace mobius
