vtkBase64OutputStream.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkBase64OutputStream.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 vtkBase64OutputStream_h
#define vtkBase64OutputStream_h
 
#include "vtkIOCoreModule.h" // For export macro
#include "vtkOutputStream.h"
 
class VTKIOCORE_EXPORT vtkBase64OutputStream : public vtkOutputStream
{
public:
  vtkTypeMacro(vtkBase64OutputStream, vtkOutputStream);
  static vtkBase64OutputStream* New();
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  int StartWriting() override;
 
  int Write(void const* data, size_t length) override;
 
  int EndWriting() override;
 
protected:
  vtkBase64OutputStream();
  ~vtkBase64OutputStream() override;
 
  // Number of un-encoded bytes left in Buffer from last call to Write.
  unsigned int BufferLength;
  unsigned char Buffer[2];
 
  // Methods to encode and write data.
  int EncodeTriplet(unsigned char c0, unsigned char c1, unsigned char c2);
  int EncodeEnding(unsigned char c0, unsigned char c1);
  int EncodeEnding(unsigned char c0);
 
private:
  vtkBase64OutputStream(const vtkBase64OutputStream&) = delete;
  void operator=(const vtkBase64OutputStream&) = delete;
};
 
#endif