filename.hh

// Copyright (C) 2009, 2010 EPITA Research and Development Laboratory
// (LRDE)
//
// This file is part of Olena.
//
// Olena 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, version 2 of the License.
//
// Olena 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 Olena.  If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception, you may use this file as part of a free
// software project without restriction.  Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to produce
// an executable, this file does not by itself cause the resulting
// executable to be covered by the GNU General Public License.  This
// exception does not however invalidate any other reasons why the
// executable file might be covered by the GNU General Public License.

#ifndef MLN_DEBUG_FILENAME_HH
# define MLN_DEBUG_FILENAME_HH



# include <string>
# include <sstream>


namespace mln
{

  namespace debug
  {


    std::string
    filename(const std::string& filename, int id);


    namespace internal
    {

      extern std::string filename_prefix;

    } // end of namespace mln::debug::internal


# ifndef MLN_INCLUDE_ONLY

#  ifndef MLN_WO_GLOBAL_VARS

    namespace internal
    {

      std::string filename_prefix = "";

    } // end of namespace mln::debug::internal

#  endif // ! MLN_WO_GLOBAL_VARS


    inline
    std::string
    filename(const std::string& filename, int id = -1)
    {
      static int file_id = 1;

      std::ostringstream os;

      if (! internal::filename_prefix.empty())
        os << internal::filename_prefix << "_";

      if (id == -1)
      {
        if (file_id < 10)
          os << "0";
        if (file_id < 100)
          os << "0";

        os << file_id++;
      }
      else
        os << id;

      os << "_"
         << filename;

      return os.str();
    }


# endif // ! MLN_INCLUDE_ONLY

  } // end of namespace mln::debug

} // end of namespace mln

#endif // ! MLN_DEBUG_FILENAME_HH