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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkXMLFile.cxx,v $
Language: C++
Date: $Date: 2004-01-08 00:39:08 $
Version: $1.0$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.
=========================================================================*/
#ifndef __itkXMLFile_txx
#define __itkXMLFile_txx
#include "itkXMLFile.h"
#include "itkExceptionObject.h"
#include <itksys/SystemTools.hxx>
#include <fstream>
namespace itk
{
//----------------------------------------------------------------------------
static void itkXMLParserStartElement(void* parser, const char *name,
const char **atts)
{
// Begin element handler that is registered with the XML_Parser.
// This just casts the user data to a itkXMLParser and calls
// StartElement.
static_cast<XMLReaderBase*>(parser)->StartElement(name, atts);
}
//----------------------------------------------------------------------------
static void itkXMLParserEndElement(void* parser, const char *name)
{
// End element handler that is registered with the XML_Parser. This
// just casts the user data to a itkXMLParser and calls EndElement.
static_cast<XMLReaderBase*>(parser)->EndElement(name);
}
//----------------------------------------------------------------------------
static void itkXMLParserCharacterDataHandler(void* parser, const char* data,
int length)
{
// Character data handler that is registered with the XML_Parser.
// This just casts the user data to a itkXMLParser and calls
// CharacterDataHandler.
static_cast<XMLReaderBase*>(parser)->CharacterDataHandler(data, length);
}
void
XMLReaderBase::
parse(void)
{
XML_Parser Parser = XML_ParserCreate(0);
XML_SetElementHandler(Parser,
&itkXMLParserStartElement,
&itkXMLParserEndElement);
XML_SetCharacterDataHandler(Parser,
&itkXMLParserCharacterDataHandler);
XML_SetUserData(Parser,this);
std::ifstream inputstream;
inputstream.open(m_Filename.c_str(), std::ios::binary | std::ios::in);
if(inputstream.fail())
{
ExceptionObject exception(__FILE__, __LINE__);
std::string message = "Can't open ";
message += m_Filename;
message += '\n';
exception.SetDescription(message.c_str());
throw exception;
}
// Default stream parser just reads a block at a time.
std::streamsize filesize =
itksys::SystemTools::FileLength(m_Filename.c_str());
char *buffer = new char [filesize];
inputstream.read(buffer,filesize);
if(static_cast<std::streamsize>(inputstream.gcount()) != filesize)
{
ExceptionObject exception(__FILE__, __LINE__);
exception.SetDescription("File Read Error");
throw exception;
}
bool result = XML_Parse(Parser,buffer,inputstream.gcount(),false);
delete [] buffer;
if(!result)
{
ExceptionObject exception(__FILE__, __LINE__);
std::string message(XML_ErrorString(XML_GetErrorCode(Parser)));
message += " ";
message += m_Filename;
message += '\n';
exception.SetDescription(message.c_str());
throw exception;
}
XML_ParserFree(Parser);
return;
}
void
XMLReaderBase::
GenerateOutputInformation()
{
this->parse();
}
}
#endif
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