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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkOutputStream.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 vtkOutputStream - Wraps a binary output stream with a VTK interface.
// .SECTION Description
// vtkOutputStream provides a VTK-style interface wrapping around a
// standard output stream. The access methods are virtual so that
// subclasses can transparently provide encoding of the output. Data
// lengths for Write calls refer to the length of the data in memory.
// The actual length in the stream may differ for subclasses that
// implement an encoding scheme.
#ifndef __vtkOutputStream_h
#define __vtkOutputStream_h
#include "vtkObject.h"
class VTK_IO_EXPORT vtkOutputStream : public vtkObject
{
public:
vtkTypeRevisionMacro(vtkOutputStream,vtkObject);
static vtkOutputStream *New();
void PrintSelf(ostream& os, vtkIndent indent);
//BTX
// Description:
// Get/Set the real output stream.
vtkSetMacro(Stream, ostream*);
vtkGetMacro(Stream, ostream*);
//ETX
// Description:
// Called after the stream position has been set by the caller, but
// before any Write calls. The stream position should not be
// adjusted by the caller until after an EndWriting call.
virtual int StartWriting();
// Description:
// Write output data of the given length.
virtual int Write(const unsigned char* data, unsigned long length);
int Write(const char* data, unsigned long length);
// Description:
// Called after all desired calls to Write have been made. After
// this call, the caller is free to change the position of the
// stream. Additional writes should not be done until after another
// call to StartWriting.
virtual int EndWriting();
protected:
vtkOutputStream();
~vtkOutputStream();
// The real output stream.
ostream* Stream;
private:
vtkOutputStream(const vtkOutputStream&); // Not implemented.
void operator=(const vtkOutputStream&); // Not implemented.
};
#endif
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