vtkGenericDataObjectReader.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkGenericDataObjectReader.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkGenericDataObjectReader_h
#define vtkGenericDataObjectReader_h

#include "vtkIOLegacyModule.h" // For export macro
#include "vtkDataReader.h"

class vtkDataObject;
class vtkGraph;
class vtkMolecule;
class vtkPolyData;
class vtkRectilinearGrid;
class vtkStructuredGrid;
class vtkStructuredPoints;
class vtkTable;
class vtkTree;
class vtkUnstructuredGrid;

class VTKIOLEGACY_EXPORT vtkGenericDataObjectReader : public vtkDataReader
{
public:
  static vtkGenericDataObjectReader *New();
  vtkTypeMacro(vtkGenericDataObjectReader,vtkDataReader);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkDataObject *GetOutput();
  vtkDataObject *GetOutput(int idx);


  vtkGraph *GetGraphOutput();
  vtkMolecule *GetMoleculeOutput();
  vtkPolyData *GetPolyDataOutput();
  vtkRectilinearGrid *GetRectilinearGridOutput();
  vtkStructuredGrid *GetStructuredGridOutput();
  vtkStructuredPoints *GetStructuredPointsOutput();
  vtkTable *GetTableOutput();
  vtkTree *GetTreeOutput();
  vtkUnstructuredGrid *GetUnstructuredGridOutput();

  virtual int ReadOutputType();

  int ReadMetaDataSimple(const std::string& fname,
                         vtkInformation* metadata) override;

  int ReadMeshSimple(const std::string& fname,
                     vtkDataObject* output) override;


protected:
  vtkGenericDataObjectReader();
  ~vtkGenericDataObjectReader() override;

  vtkDataObject* CreateOutput(vtkDataObject* currentOutput) override;

  int FillOutputPortInformation(int, vtkInformation *) override;

private:
  vtkGenericDataObjectReader(const vtkGenericDataObjectReader&) = delete;
  void operator=(const vtkGenericDataObjectReader&) = delete;

  template<typename ReaderT, typename DataT>
    void ReadData(
      const char* fname, const char* dataClass, vtkDataObject* output);

  vtkSetStringMacro(Header);

};

#endif