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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTextCodecFactory.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.
-------------------------------------------------------------------------*/
// .NAME vtkTextCodecFactory - maintain a list of text codecs and return instances
//
// .SECTION Description
// A single class to hold registered codecs and return instances of them based
// on either a decriptive name (UTF16 or latin-1) or by asking who can handle a
// given std::vector<unsigned char>
//
// .SECTION Thanks
// Thanks to Tim Shed from Sandia National Laboratories for his work
// on the concepts and to Marcus Hanwell and Jeff Baumes of Kitware for
// keeping me out of the weeds
//
// .SECTION See Also
// vtkTextCodec
//
#ifndef vtkTextCodecFactory_h
#define vtkTextCodecFactory_h
#include "vtkIOCoreModule.h" // For export macro
#include "vtkObject.h"
class vtkTextCodec;
class VTKIOCORE_EXPORT vtkTextCodecFactory : public vtkObject
{
public:
vtkTypeMacro(vtkTextCodecFactory, vtkObject);
static vtkTextCodecFactory* New() ;
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Type for Creation callback.
typedef vtkTextCodec* (*CreateFunction)();
// Description:
// Provides mechanism to register/unregister additional callbacks to create
// concrete subclasses of vtkTextCodecFactory to handle different protocols.
// The registered callbacks are tried in the order they are registered.
static void RegisterCreateCallback(CreateFunction callback);
static void UnRegisterCreateCallback(CreateFunction callback);
static void UnRegisterAllCreateCallbacks();
// Description:
// Given a codec/storage name try to find one of our registered codecs that
// can handle it. This is non-deterministic, very messy and should not be
// your first thing to try.
// The registered callbacks are tried in the order they are registered.
static vtkTextCodec* CodecForName(const char* CodecName);
// Description:
// Given a snippet of the stored data name try to find one of our registered
// codecs that can handle transforming it into unicode.
// The registered callbacks are tried in the order they are registered.
static vtkTextCodec* CodecToHandle(istream& InputStream);
// Description:
// Initialize core text codecs - needed for the static compilation case.
static void Initialize();
//BTX
protected:
vtkTextCodecFactory();
~vtkTextCodecFactory();
private:
vtkTextCodecFactory(const vtkTextCodecFactory &); // Not implemented.
void operator=(const vtkTextCodecFactory &); // Not implemented.
// Description;
// Data structure used to store registered callbacks.
class CallbackVector;
static CallbackVector* Callbacks;
//ETX
};
#endif // vtkTextCodecFactory_h
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