src/FDM/JSBSim/input_output/FGXMLFileRead.h

   1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   2
   3  Module:       FGXMLFileRead.h
   4  Author:       Jon S. Berndt
   5  Date started: 02/04/07
   6  Purpose:      Shared base class that wraps the XML file reading logic
   7
   8  ------------- Copyright (C) 2007  Jon S. Berndt (jon@jsbsim.org) -------------
   9
  10  This program is free software; you can redistribute it and/or modify it under
  11  the terms of the GNU Lesser General Public License as published by the Free Software
  12  Foundation; either version 2 of the License, or (at your option) any later
  13  version.
  14
  15  This program is distributed in the hope that it will be useful, but WITHOUT
  16  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  17  FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
  18  details.
  19
  20  You should have received a copy of the GNU Lesser General Public License along with
  21  this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  22  Place - Suite 330, Boston, MA  02111-1307, USA.
  23
  24  Further information about the GNU Lesser General Public License can also be found on
  25  the world wide web at http://www.gnu.org.
  26
  27 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  28 SENTRY
  29 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  30
  31 #ifndef FGXMLFILEREAD_HEADER_H
  32 #define FGXMLFILEREAD_HEADER_H
  33
  34 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 INCLUDES
  36 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  37
  38 #include <input_output/FGXMLParse.h>
  39
  40 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  41 DEFINITIONS
  42 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  43
  44 #define ID_XMLFILEREAD "$Id$"
  45
  46 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  47 FORWARD DECLARATIONS
  48 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  49
  50 namespace JSBSim {
  51
  52 class FGXMLFileRead {
  53 public:
  54   FGXMLFileRead(void) {}
  55   ~FGXMLFileRead(void) {}
  56
  57 protected:
  58   Element* document;
  59   Element* LoadXMLDocument(string XML_filename)
  60   {
  61     ifstream infile;
  62
  63     if ( !XML_filename.empty() ) {
  64       if (XML_filename.find(".xml") == string::npos) XML_filename += ".xml";
  65       infile.open(XML_filename.c_str());
  66       if ( !infile.is_open()) {
  67         cerr << "Could not open file: " << XML_filename << endl;
  68         return 0L;
  69       }
  70     } else {
  71       cerr << "No filename given." << endl;
  72       return 0L;
  73     }
  74
  75     readXML(infile, file_parser);
  76     document = file_parser.GetDocument();
  77     infile.close();
  78
  79     return document;
  80   }
  81
  82   void ResetParser(void) {file_parser.reset();}
  83
  84 private:
  85   FGXMLParse file_parser;
  86 };
  87 }
  88 #endif