CSVParser.h

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/***************************************************************************
 *   Copyright (c) 2005-2024 by Christophe GONZALES(_at_AMU) and Pierre-Henri WUILLEMIN(_at_LIP6)  *
 *   info_at_agrum_dot_org                                               *
 *                                                                         *
 *   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 of the License, 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
 
#ifndef GUM_CSV_PARSER_H
#define GUM_CSV_PARSER_H
 
#include <istream>
#include <string>
#include <string_view>
#include <vector>
 
#include <agrum/agrum.h>
 
namespace gum {
 
  namespace learning {

    class CSVParser final {
      public:
      // ##########################################################################
      // ##########################################################################


      CSVParser(std::istream&      in,
                const std::string& filename,
                const std::string& delimiter     = ",",
                const char         commentmarker = '#',
                const char         quoteMarker   = '"');

      virtual ~CSVParser();

 
 
      // ########################################################################
      // ########################################################################


      bool next();


      const std::vector< std::string >& current() const;

      std::size_t nbLine() const;

      void useNewStream(std::istream&      in,
                        const std::string& delimiter     = ",",
                        const char         commentmarker = '#',
                        const char         quoteMarker   = '"');

 
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
      private:
      void _getNextTriplet_(std::string_view str,
                            std::size_t&     first_letter_token,
                            std::size_t&     next_token,
                            std::size_t&     last_letter_token,
                            std::size_t      from) const;
 
      void _tokenize_(std::string_view str);
 
      std::size_t _correspondingQuoteMarker_(std::string_view str, std::size_t pos) const;
 
 
      std::string _line_;
      std::string _delimiter_;
      std::string _spaces_;
      std::string _delimiterPlusSpaces_;
      std::size_t _nbLine_;
      char        _commentMarker_;
      char        _quoteMarker_;
      bool        _emptyData_;
 
      std::istream*              _instream_;
      std::vector< std::string > _data_;
      const std::string          _filename_;
 
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
    };
 
  }   // namespace learning
 
}   // namespace gum

#ifndef GUM_NO_INLINE
#include <agrum/base/database/CSVParser_inl.h>
#endif /* GUM_NO_INLINE */
 
#endif   // GUM_CSV_PARSER_H