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/*=========================================================================
Program: Visualization Toolkit
Module: vtkASCIITextCodec.cxx
Copyright (c)
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 2010 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#include "vtkASCIITextCodec.h"
#include "vtkObjectFactory.h"
#include "vtkTextCodecFactory.h"
#include <stdexcept>
vtkStandardNewMacro(vtkASCIITextCodec);
const char* vtkASCIITextCodec::Name() {return "US-ASCII" ;}
bool vtkASCIITextCodec::CanHandle(const char* NameStr)
{
if (0 == strcmp(NameStr, "US-ASCII") || 0 == strcmp(NameStr, "ASCII"))
return true ;
else
return false ;
}
bool vtkASCIITextCodec::IsValid(istream& InputStream)
{
bool returnBool = true ;
// get the position of the stream so we can restore it when we are done
istream::pos_type StreamPos = InputStream.tellg() ;
// check the code points for non-ascii characters
while (!InputStream.eof())
{
vtkTypeUInt32 CodePoint = InputStream.get() ;
if(!InputStream.eof() && CodePoint > 0x7f)
{
returnBool = false ;
break ;
}
}
// reset the stream
InputStream.clear() ;
InputStream.seekg(StreamPos) ;
return returnBool ;
}
void vtkASCIITextCodec::ToUnicode(istream& InputStream,
vtkTextCodec::OutputIterator& output)
{
while (!InputStream.eof())
{
vtkTypeUInt32 CodePoint = InputStream.get();
if(!InputStream.eof())
{
if (CodePoint > 0x7f)
throw std::runtime_error("Detected a character that isn't valid US-ASCII.");
*output++ = CodePoint;
}
}
}
vtkUnicodeString::value_type vtkASCIITextCodec::NextUnicode(istream& InputStream)
{
vtkTypeUInt32 CodePoint = InputStream.get();
if (!InputStream.eof())
{
if(CodePoint > 0x7f)
throw std::runtime_error("Detected a character that isn't valid US-ASCII.");
return CodePoint ;
}
else
return 0 ;
}
vtkASCIITextCodec::vtkASCIITextCodec() : vtkTextCodec()
{
}
vtkASCIITextCodec::~vtkASCIITextCodec()
{
}
void vtkASCIITextCodec::PrintSelf(ostream& os, vtkIndent indent)
{
os << indent << "vtkASCIITextCodec (" << this << ") \n" ;
indent = indent.GetNextIndent();
this->Superclass::PrintSelf(os, indent.GetNextIndent()) ;
}
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