dox/IO/vtkBase64Utilities.h

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

  Program:   Visualization Toolkit
  Module:    vtkBase64Utilities.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 __vtkBase64Utilities_h
#define __vtkBase64Utilities_h

#include "vtkObject.h"

class VTK_IO_EXPORT vtkBase64Utilities : public vtkObject
{
public:
  static vtkBase64Utilities *New();
  vtkTypeMacro(vtkBase64Utilities,vtkObject);


  static void EncodeTriplet(unsigned char i0,
                            unsigned char i1,
                            unsigned char i2,
                            unsigned char *o0,
                            unsigned char *o1,
                            unsigned char *o2,
                            unsigned char *o3);


  static void EncodePair(unsigned char i0,
                         unsigned char i1,
                         unsigned char *o0,
                         unsigned char *o1,
                         unsigned char *o2,
                         unsigned char *o3);


  static void EncodeSingle(unsigned char i0,
                           unsigned char *o0,
                           unsigned char *o1,
                           unsigned char *o2,
                           unsigned char *o3);


  static unsigned long Encode(const unsigned char *input, 
                              unsigned long length, 
                              unsigned char *output,
                              int mark_end = 0);



  static int DecodeTriplet(unsigned char i0,
                           unsigned char i1,
                           unsigned char i2,
                           unsigned char i3,
                           unsigned char *o0,
                           unsigned char *o1,
                           unsigned char *o2);


  static unsigned long Decode(const unsigned char *input, 
                              unsigned long length, 
                              unsigned char *output,
                              unsigned long max_input_length = 0);

protected:
  vtkBase64Utilities() {};
  ~vtkBase64Utilities() {};  
  
private:
  vtkBase64Utilities(const vtkBase64Utilities&);  // Not implemented.
  void operator=(const vtkBase64Utilities&);  // Not implemented.
};

#endif

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