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

  Program:   Visualization Toolkit
  Module:    vtkRInterface.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.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2009 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/

#ifndef vtkRInterface_h
#define vtkRInterface_h

#include "vtkFiltersStatisticsGnuRModule.h" // For export macro
#include "vtkObject.h"

class vtkDataArray;
class vtkArray;
class vtkTree;
class vtkTable;
class vtkImplementationRSingleton;
class vtkRAdapter;

class VTKFILTERSSTATISTICSGNUR_EXPORT vtkRInterface : public vtkObject
{
public:

  static vtkRInterface* New();
  vtkTypeMacro(vtkRInterface,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

  int EvalRcommand(const char *commandName, int param);

  int EvalRscript(const char *string, bool showRoutput = true);

  int OutputBuffer(char* p, int n);

  void AssignVTKDataArrayToRVariable(vtkDataArray* da, const char* RVariableName);

  void AssignVTKArrayToRVariable(vtkArray* da, const char* RVariableName);

  void AssignVTKTreeToRVariable(vtkTree* tr, const char* RVariableName);

  vtkTree* AssignRVariableToVTKTree(const char* RVariableName);

  vtkDataArray* AssignRVariableToVTKDataArray(const char* RVariableName);

  vtkArray* AssignRVariableToVTKArray(const char* RVariableName);

  vtkTable* AssignRVariableToVTKTable(const char* RVariableName);

  void AssignVTKTableToRVariable(vtkTable* table, const char* RVariableName);

protected:
  vtkRInterface();
  ~vtkRInterface();

private:
  int FillOutputBuffer();
  vtkRInterface(const vtkRInterface&);    // Not implemented
  void operator=(const vtkRInterface&);   // Not implemented

  vtkImplementationRSingleton* rs;

  char* buffer;
  int buffer_size;
  vtkRAdapter* vra;

};

#endif