You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
2.4 KiB
70 lines
2.4 KiB
/*=========================================================================
|
|
|
|
Program: Visualization Toolkit
|
|
Module: $RCSfile: vtkBase64InputStream.h,v $
|
|
|
|
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.
|
|
|
|
=========================================================================*/
|
|
// .NAME vtkBase64InputStream - Reads base64-encoded input from a stream.
|
|
// .SECTION Description
|
|
// vtkBase64InputStream implements base64 decoding with the
|
|
// vtkInputStream interface.
|
|
|
|
#ifndef __vtkBase64InputStream_h
|
|
#define __vtkBase64InputStream_h
|
|
|
|
#include "vtkInputStream.h"
|
|
|
|
class VTK_IO_EXPORT vtkBase64InputStream : public vtkInputStream
|
|
{
|
|
public:
|
|
vtkTypeRevisionMacro(vtkBase64InputStream,vtkInputStream);
|
|
static vtkBase64InputStream *New();
|
|
void PrintSelf(ostream& os, vtkIndent indent);
|
|
|
|
// Description:
|
|
// Called after the stream position has been set by the caller, but
|
|
// before any Seek or Read calls. The stream position should not be
|
|
// adjusted by the caller until after an EndReading call.
|
|
void StartReading();
|
|
|
|
// Description:
|
|
// Seek to the given offset in the input data. Returns 1 for
|
|
// success, 0 for failure.
|
|
int Seek(unsigned long offset);
|
|
|
|
// Description:
|
|
// Read input data of the given length. Returns amount actually
|
|
// read.
|
|
unsigned long Read(unsigned char* data, unsigned long length);
|
|
|
|
// Description:
|
|
// Called after all desired calls to Seek and Read have been made.
|
|
// After this call, the caller is free to change the position of the
|
|
// stream. Additional reads should not be done until after another
|
|
// call to StartReading.
|
|
void EndReading();
|
|
protected:
|
|
vtkBase64InputStream();
|
|
~vtkBase64InputStream();
|
|
|
|
// Number of decoded bytes left in Buffer from last call to Read.
|
|
int BufferLength;
|
|
unsigned char Buffer[2];
|
|
|
|
// Reads 4 bytes from the input stream and decodes them into 3 bytes.
|
|
int DecodeTriplet(unsigned char& c0, unsigned char& c1, unsigned char& c2);
|
|
|
|
private:
|
|
vtkBase64InputStream(const vtkBase64InputStream&); // Not implemented.
|
|
void operator=(const vtkBase64InputStream&); // Not implemented.
|
|
};
|
|
|
|
#endif
|
|
|