GmshFormatReader.hpp

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//  This file is part of ff3d - http://www.freefem.org/ff3d
//  Copyright (C) 2001, 2002, 2003 Stéphane Del Pino

//  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, write to the Free Software Foundation,
//  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

//  $Id: GmshFormatReader.hpp,v 1.7 2008/03/04 00:18:28 delpinux Exp $

#ifndef GMSH_FORMAT_READER_HPP
#define GMSH_FORMAT_READER_HPP

#include <MeshReader.hpp>
#include <string>

#include <TinyVector.hpp>

#include <set>
#include <map>
#include <string>
#include <vector>

class GmshFormatReader
  : public MeshReader
{
private:
  struct VertexError {};

  std::vector<int> __verticesNumbers;

  std::vector<int> __verticesCorrepondance;

  std::vector<short> __elementType;

  std::vector<int> __references;

  std::vector<std::vector<int> > __elementVertices;

  std::vector<int> __numberOfPrimitiveNodes;

  TinyVector<15, bool> __supportedPrimitives;

  std::map<int, std::string> __primitivesNames;

  bool __binary;                
  bool __convertEndian;         
  void __proceedData();

  void __readGmshFormat1();

  void __readGmshFormat2();

  enum KeywordType {
    // gmsh 1.0
    NOD,
    ENDNOD,
    ELM,
    ENDELM,

    // gmsh 2.0
    MESHFORMAT,
    ENDMESHFORMAT,
    NODES,
    ENDNODES,
    ELEMENTS,
    ENDELEMENTS,

    Unknown,
    EndOfFile
  };

  typedef std::map<std::string, int> KeywordList;

  KeywordList __keywordList;    
  typedef std::pair<std::string, int> Keyword;

  void __skipComments();

  GmshFormatReader::Keyword __nextKeyword();

  void __getVertices();

  void __readVertices();

  void __readElements1();

  void __readElements2();

  GmshFormatReader(const GmshFormatReader& M);

  void __writeReferences(const std::set<size_t>& references,
                         std::string objectName);
public:

  GmshFormatReader(const std::string& s);

  ~GmshFormatReader()
  {
    ;
  }
};

#endif // GMSH_FORMAT_READER_HPP

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