VTK
vtkBase64InputStream.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkBase64InputStream.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
23 #ifndef vtkBase64InputStream_h
24 #define vtkBase64InputStream_h
25 
26 #include "vtkIOCoreModule.h" // For export macro
27 #include "vtkInputStream.h"
28 
29 class VTKIOCORE_EXPORT vtkBase64InputStream : public vtkInputStream
30 {
31 public:
34  void PrintSelf(ostream& os, vtkIndent indent);
35 
41  void StartReading();
42 
47  int Seek(vtkTypeInt64 offset);
48 
53  size_t Read(void* data, size_t length);
54 
61  void EndReading();
62 
63 protected:
66 
67  // Number of decoded bytes left in Buffer from last call to Read.
69  unsigned char Buffer[2];
70 
71  // Reads 4 bytes from the input stream and decodes them into 3 bytes.
72  int DecodeTriplet(unsigned char& c0, unsigned char& c1, unsigned char& c2);
73 
74 private:
75  vtkBase64InputStream(const vtkBase64InputStream&) VTK_DELETE_FUNCTION;
76  void operator=(const vtkBase64InputStream&) VTK_DELETE_FUNCTION;
77 };
78 
79 #endif
Reads base64-encoded input from a stream.
int Seek(vtkTypeInt64 offset)
Seek to the given offset in the input data.
void EndReading()
Called after all desired calls to Seek and Read have been made.
static vtkBase64InputStream * New()
int DecodeTriplet(unsigned char &c0, unsigned char &c1, unsigned char &c2)
void StartReading()
Called after the stream position has been set by the caller, but before any Seek or Read calls.
void PrintSelf(ostream &os, vtkIndent indent)
Methods invoked by print to print information about the object including superclasses.
size_t Read(void *data, size_t length)
Read input data of the given length.
a simple class to control print indentation
Definition: vtkIndent.h:40
Wraps a binary input stream with a VTK interface.
@ length
Definition: vtkX3D.h:393
@ offset
Definition: vtkX3D.h:438
@ data
Definition: vtkX3D.h:315