FGXMLFileRead.cpp

/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 Module:       FGXMLFileRead.h
 Author:       Jon S. Berndt
 Date started: 02/04/07
 Purpose:      Shared base class that wraps the XML file reading logic
 
 ------------- Copyright (C) 2007  Jon S. Berndt (jon@jsbsim.org) -------------
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU Lesser General Public License as published by the Free Software
 Foundation; either version 2 of the License, or (at your option) any later
 version.
 
 This program is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 details.
 
 You should have received a copy of the GNU Lesser General Public License along with
 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 Place - Suite 330, Boston, MA  02111-1307, USA.
 
 Further information about the GNU Lesser General Public License can also be found on
 the world wide web at http://www.gnu.org.
 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
INCLUDES
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
#include "FGXMLFileRead.h"
#include "input_output/FGLog.h"
#include "simgear/io/iostreams/sgstream.hxx"
 
namespace JSBSim {
 
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
CLASS IMPLEMENTATION
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
Element* FGXMLFileRead::LoadXMLDocument(const SGPath& XML_filename,
                                        FGXMLParse& fparse, bool verbose)
{
  sg_ifstream infile;
  SGPath filename(XML_filename);
  if (!filename.isNull()) {
    if (filename.extension().empty())
      filename.concat(".xml");
    infile.open(filename);
    if ( !infile.is_open()) {
      if (verbose) {
        FGLogging log(LogLevel::ERROR);
        log << "Could not open file: " << filename << "\n";
      }
      return nullptr;
    }
  } else {
    FGLogging log(LogLevel::ERROR);
    log << "No filename given.\n";
    return nullptr;
  }
  readXML(infile, fparse, filename.utf8Str());
  Element* document = fparse.GetDocument();
  infile.close();
  return document;
}
 
} // end namespace JSBSim