vtkInputStream.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkInputStream.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 vtkInputStream_h
#define vtkInputStream_h
 
#include "vtkIOCoreModule.h" // For export macro
#include "vtkObject.h"
 
class VTKIOCORE_EXPORT vtkInputStream : public vtkObject
{
public:
  vtkTypeMacro(vtkInputStream, vtkObject);
  static vtkInputStream* New();
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  vtkSetMacro(Stream, istream*);
  vtkGetMacro(Stream, istream*);
 
  virtual void StartReading();
 
  virtual int Seek(vtkTypeInt64 offset);
 
  virtual size_t Read(void* data, size_t length);
 
  virtual void EndReading();
 
protected:
  vtkInputStream();
  ~vtkInputStream() override;
 
  // The real input stream.
  istream* Stream;
  size_t ReadStream(char* data, size_t length);
 
  // The input stream's position when StartReading was called.
  vtkTypeInt64 StreamStartPosition;
 
private:
  vtkInputStream(const vtkInputStream&) = delete;
  void operator=(const vtkInputStream&) = delete;
};
 
#endif