vtkMetaReader.h

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

  Program:   ParaView
  Module:    vtkMetaReader.h

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html 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 vtkMetaReader_h
#define vtkMetaReader_h

#include "vtkDataObjectAlgorithm.h"
#include "vtkPVVTKExtensionsIOCoreModule.h" //needed for exports

#include <string> // for std::string

class VTKPVVTKEXTENSIONSIOCORE_EXPORT vtkMetaReader : public vtkDataObjectAlgorithm
{
public:
  static vtkMetaReader* New();
  vtkTypeMacro(vtkMetaReader, vtkDataObjectAlgorithm);

  vtkMetaReader();
  ~vtkMetaReader() override;


  vtkSetObjectMacro(Reader, vtkAlgorithm);
  vtkGetObjectMacro(Reader, vtkAlgorithm);


  void SetMetaFileName(const char* name)
  {
    Set_MetaFileName(name);
    this->MetaFileNameMTime = this->vtkDataObjectAlgorithm::GetMTime();
  }
  char* GetMetaFileName() { return Get_MetaFileName(); }


  vtkGetVector2Macro(FileIndexRange, vtkIdType);


  vtkIdType GetFileIndex() { return this->Get_FileIndex(); }
  void SetFileIndex(vtkIdType i)
  {
    this->Set_FileIndex(i);
    this->FileIndexMTime = this->vtkDataObjectAlgorithm::GetMTime();
  }

  vtkMTimeType GetMTime() override;


  vtkSetStringMacro(FileNameMethod);
  vtkGetStringMacro(FileNameMethod);

  void PrintSelf(ostream& os, vtkIndent indent) override;

protected:
  int FillOutputPortInformation(int port, vtkInformation* info) override;

  vtkSetStringMacro(_MetaFileName);
  vtkGetStringMacro(_MetaFileName);

  vtkSetMacro(_FileIndex, vtkIdType);
  vtkGetMacro(_FileIndex, vtkIdType);

  void ReaderSetFileName(const char* filename);
  int ReaderCanReadFile(const char* filename);

  std::string FromRelativeToMetaFile(const char* metaFileName, const char* fileName);

protected:
  // Reader that handles requests for the meta-reader
  vtkAlgorithm* Reader;
  // Reader modification time after changing the Reader's FileName
  // Used to ignore changing the FileName for the reader when reporting MTime
  vtkMTimeType FileNameMTime;
  // Reader modification time before changing the Reader's FileName
  // Used to ignore changing the FileName for the reader when reporting MTime
  vtkMTimeType BeforeFileNameMTime;
  // Method name used to set the file name for the Reader
  char* FileNameMethod;
  // The index of the file to read.
  vtkIdType _FileIndex;
  vtkMTimeType FileIndexMTime;
  // Range for the file index
  vtkIdType FileIndexRange[2];

  // File name for the meta-reader
  char* _MetaFileName;
  // File name modification time
  vtkMTimeType MetaFileNameMTime;

  vtkTimeStamp MetaFileReadTime;

private:
  vtkMetaReader(const vtkMetaReader&) = delete;
  void operator=(const vtkMetaReader&) = delete;
};

#endif