/usr/include/paraview/vtkXMLUnstructuredGridWriter.h is in paraview-dev 5.0.1+dfsg1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84  | /*=========================================================================
  Program:   Visualization Toolkit
  Module:    vtkXMLUnstructuredGridWriter.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.
=========================================================================*/
// .NAME vtkXMLUnstructuredGridWriter - Write VTK XML UnstructuredGrid files.
// .SECTION Description
// vtkXMLUnstructuredGridWriter writes the VTK XML UnstructuredGrid
// file format.  One unstructured grid input can be written into one
// file in any number of streamed pieces (if supported by the rest of
// the pipeline).  The standard extension for this writer's file
// format is "vtu".  This writer is also used to write a single piece
// of the parallel file format.
// .SECTION See Also
// vtkXMLPUnstructuredGridWriter
#ifndef vtkXMLUnstructuredGridWriter_h
#define vtkXMLUnstructuredGridWriter_h
#include "vtkIOXMLModule.h" // For export macro
#include "vtkXMLUnstructuredDataWriter.h"
class vtkUnstructuredGridBase;
class VTKIOXML_EXPORT vtkXMLUnstructuredGridWriter : public vtkXMLUnstructuredDataWriter
{
public:
  vtkTypeMacro(vtkXMLUnstructuredGridWriter,vtkXMLUnstructuredDataWriter);
  void PrintSelf(ostream& os, vtkIndent indent);
  static vtkXMLUnstructuredGridWriter* New();
  //BTX
  // Description:
  // Get/Set the writer's input.
  vtkUnstructuredGridBase* GetInput();
  //ETX
  // Description:
  // Get the default file extension for files written by this writer.
  const char* GetDefaultFileExtension();
protected:
  vtkXMLUnstructuredGridWriter();
  ~vtkXMLUnstructuredGridWriter();
  // see algorithm for more info
  virtual int FillInputPortInformation(int port, vtkInformation* info);
  virtual void AllocatePositionArrays();
  virtual void DeletePositionArrays();
  const char* GetDataSetName();
  void WriteInlinePieceAttributes();
  void WriteInlinePiece(vtkIndent indent);
  void WriteAppendedPieceAttributes(int index);
  void WriteAppendedPiece(int index, vtkIndent indent);
  void WriteAppendedPieceData(int index);
  virtual vtkIdType GetNumberOfInputCells();
  void CalculateSuperclassFraction(float* fractions);
  // Positions of attributes for each piece.
  vtkTypeInt64* NumberOfCellsPositions;
  OffsetsManagerArray *CellsOM; //one per piece
private:
  vtkXMLUnstructuredGridWriter(const vtkXMLUnstructuredGridWriter&);  // Not implemented.
  void operator=(const vtkXMLUnstructuredGridWriter&);  // Not implemented.
};
#endif
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