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:
33  static vtkBase64InputStream *New();
34  void PrintSelf(ostream& os, vtkIndent indent) override;
35 
41  void StartReading() override;
42 
47  int Seek(vtkTypeInt64 offset) override;
48 
53  size_t Read(void* data, size_t length) override;
54 
61  void EndReading() override;
62 
63 protected:
65  ~vtkBase64InputStream() override;
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:
76  void operator=(const vtkBase64InputStream&) = delete;
77 };
78 
79 #endif
vtkBase64InputStream::BufferLength
int BufferLength
Definition: vtkBase64InputStream.h:68
vtkX3D::data
Definition: vtkX3D.h:315
vtkInputStream::Seek
virtual int Seek(vtkTypeInt64 offset)
Seek to the given offset in the input data.
vtkInputStream::PrintSelf
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
vtkX3D::length
Definition: vtkX3D.h:393
vtkInputStream.h
vtkX3D::offset
Definition: vtkX3D.h:438
vtkInputStream::StartReading
virtual void StartReading()
Called after the stream position has been set by the caller, but before any Seek or Read calls.
vtkIndent
a simple class to control print indentation
Definition: vtkIndent.h:39
vtkInputStream::New
static vtkInputStream * New()
vtkBase64InputStream
Reads base64-encoded input from a stream.
Definition: vtkBase64InputStream.h:29
vtkInputStream::Read
virtual size_t Read(void *data, size_t length)
Read input data of the given length.
vtkInputStream
Wraps a binary input stream with a VTK interface.
Definition: vtkInputStream.h:33
vtkInputStream::EndReading
virtual void EndReading()
Called after all desired calls to Seek and Read have been made.