vtkTextCodec.h

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

Program:   Visualization Toolkit
Module:    vtkTextCodec.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.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#ifndef vtkTextCodec_h
#define vtkTextCodec_h

#include "vtkIOCoreModule.h" // For export macro
#include "vtkObject.h"
#include "vtkUnicodeString.h" // for the value type and for function return.

class VTKIOCORE_EXPORT vtkTextCodec : public vtkObject
{
public:
  vtkTypeMacro(vtkTextCodec, vtkObject);


  virtual const char* Name();
  void PrintSelf(ostream& os, vtkIndent indent) override;

  virtual bool CanHandle(const char* NameString);

  virtual bool IsValid(istream& InputStream);


  class OutputIterator
  {
  public:
    virtual OutputIterator& operator++(int) = 0;
    virtual OutputIterator& operator*() = 0;
    virtual OutputIterator& operator=(const vtkUnicodeString::value_type value) = 0;

    OutputIterator() {}    virtual ~OutputIterator() {}

  private:
    OutputIterator(const OutputIterator&) = delete;
    OutputIterator& operator=(const OutputIterator&) = delete;
  };

  virtual void ToUnicode(istream& InputStream,
                         vtkTextCodec::OutputIterator& output) = 0;

  vtkUnicodeString ToUnicode(istream & inputStream);

  virtual vtkUnicodeString::value_type NextUnicode(istream& inputStream) = 0;

protected:
  vtkTextCodec();
  ~vtkTextCodec() override;

private:
  vtkTextCodec(const vtkTextCodec &) = delete;
  void operator=(const vtkTextCodec &) = delete;

};

#endif