Driver_Mesh.h

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// Copyright (C) 2007-2026  CEA, EDF, OPEN CASCADE
//
// Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
 
//  SMESH Driver : implementation of driver for reading and writing
//  File   : Mesh_Reader.h
//  Module : SMESH
//
#ifndef _INCLUDE_DRIVER_MESH
#define _INCLUDE_DRIVER_MESH
 
#include "SMESH_ComputeError.hxx"
#include "SMDS_Mesh.hxx"
 
#include <string>
#include <vector>
#include <smIdType.hxx>
 
#ifdef WIN32
 #if defined MESHDRIVER_EXPORTS || defined MeshDriver_EXPORTS
  #define MESHDRIVER_EXPORT __declspec( dllexport )
 #else
  #define MESHDRIVER_EXPORT __declspec( dllimport )
 #endif
#else
 #define MESHDRIVER_EXPORT
#endif
 
class MESHDRIVER_EXPORT Driver_Mesh
{
 public:
  Driver_Mesh();
  virtual ~Driver_Mesh(){}
 
  enum Status {
    DRS_OK,
    DRS_EMPTY,           // a file contains no mesh with the given name
    DRS_WARN_RENUMBER,   // a file has overlapped ranges of element numbers,
                         // so the numbers from the file are ignored
    DRS_WARN_SKIP_ELEM,  // some elements were skipped due to incorrect file data
    DRS_WARN_DESCENDING, // some elements were skipped due to descending connectivity
    DRS_FAIL,            // general failure (exception etc.)
    DRS_TOO_LARGE_MESH   // mesh is too large for export
  };
 
  void                SetMeshId(int theMeshId);
  virtual void        SetFile(const std::string& theFileName);
  virtual void        SetMeshName(const std::string& theMeshName);
  virtual std::string GetMeshName() const;
 
  virtual void        SetOption(const std::string& /*optionName*/,
                                const std::string& /*optionValue*/) {}
 
  virtual Status Perform() = 0;
 
  virtual SMESH_ComputeErrorPtr GetError();
 
  // check if a mesh is too large to export it using IDTYPE;
  // check either max ID or number of elements
  template< typename IDTYPE >
    static bool IsMeshTooLarge( const SMDS_Mesh* mesh, bool checkIDs )
  {
    if ( sizeof( IDTYPE ) < sizeof( smIdType ))
    {
      const smIdType maxNB = ToSmIdType( std::numeric_limits< IDTYPE >::max() );
      return (( checkIDs ? mesh->MaxNodeID()    : mesh->NbNodes() )  > maxNB ||
              ( checkIDs ? mesh->MaxElementID() : mesh->NbElements() > maxNB ));
    }
    return false;
  }
 
 protected:
  std::string myFile;
  std::string myMeshName;
  int         myMeshId;
 
  static std::string fixUTF8(const std::string & s );
 
  Status addMessage(const std::string& msg, const bool isFatal=false);
  std::vector< std::string > myErrorMessages;
  Status                     myStatus;
};
 
#endif