Teuchos_XMLInputSource.cpp

// @HEADER
// *****************************************************************************
//                    Teuchos: Common Tools Package
//
// Copyright 2004 NTESS and the Teuchos contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#include "Teuchos_XMLInputSource.hpp"
#include "Teuchos_TreeBuildingXMLHandler.hpp"


#ifdef HAVE_TEUCHOS_EXPAT
#  include "Teuchos_ExpatHandlerAdapter.hpp"
#  define EXPAT_BUFSIZE 8192
#else
#  include "Teuchos_XMLParser.hpp"
#endif

using namespace Teuchos;

XMLObject XMLInputSource::getObject() const
{

#ifdef HAVE_TEUCHOS_EXPAT

  RCP<TreeBuildingXMLHandler> handler = rcp(new TreeBuildingXMLHandler());

  XML_Parser parser = XML_ParserCreate(NULL);

  XML_SetElementHandler(parser, expatStartElementHandler,
                        expatEndElementHandler);

  XML_SetCharacterDataHandler(parser, expatCharacterDataHandler);

  XML_SetUserData(parser, (void*) &(*handler));

  RCP<XMLInputStream> s = stream();

  bool done = false;
  unsigned int bufsize = EXPAT_BUFSIZE;
  unsigned char buf[EXPAT_BUFSIZE];

  while (!done)
    {
      unsigned int nRead = s->readBytes(buf, bufsize);
      if (nRead < bufsize)
        {
          done = true;
        }
      XML_Parse(parser, (char*) buf, bufsize, done);
    }

  return handler->getObject();

#else

  XMLParser parser(stream());

  return parser.parse();

#endif

}