src/FDM/JSBSim/input_output/FGXMLParse.cpp

   1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   2
   3  Header:       FGXMLParse.cpp
   4  Author:       Jon Berndt
   5  Date started: 08/20/2004
   6  Purpose:      Config file read-in class and XML parser
   7  Called by:    Various
   8
   9  ------------- Copyright (C) 2001  Jon S. Berndt (jsb@hal-pc.org) -------------
  10
  11  This program is free software; you can redistribute it and/or modify it under
  12  the terms of the GNU Lesser General Public License as published by the Free Software
  13  Foundation; either version 2 of the License, or (at your option) any later
  14  version.
  15
  16  This program is distributed in the hope that it will be useful, but WITHOUT
  17  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  18  FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
  19  details.
  20
  21  You should have received a copy of the GNU Lesser General Public License along with
  22  this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  23  Place - Suite 330, Boston, MA  02111-1307, USA.
  24
  25  Further information about the GNU Lesser General Public License can also be found on
  26  the world wide web at http://www.gnu.org.
  27
  28 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  29 INCLUDES
  30 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  31
  32 #include "FGXMLParse.h"
  33 #include <cstdlib>
  34 #include "input_output/string_utilities.h"
  35
  36 namespace JSBSim {
  37
  38 static const char *IdSrc = "$Id$";
  39 static const char *IdHdr = ID_XMLPARSE;
  40
  41 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  42 CLASS IMPLEMENTATION
  43 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  44
  45 #include "FGXMLParse.h"
  46
  47 using namespace std;
  48
  49 FGXMLParse::FGXMLParse(void)
  50 {
  51   first_element_read = false;
  52   current_element = document = 0L;
  53 }
  54
  55 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  56
  57 FGXMLParse::~FGXMLParse(void)
  58 {
  59   delete document;
  60 }
  61
  62 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  63
  64 void FGXMLParse::startXML(void)
  65 {
  66 }
  67
  68 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  69
  70 void FGXMLParse::reset(void)
  71 {
  72   delete document;
  73   first_element_read = false;
  74   current_element = document = 0L;
  75 }
  76
  77 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  78
  79 void FGXMLParse::endXML(void)
  80 {
  81   // At this point, document should equal current_element ?
  82 }
  83
  84 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  85
  86 void FGXMLParse::startElement (const char * name, const XMLAttributes &atts)
  87 {
  88   string Name(name);
  89   Element *temp_element;
  90
  91   working_string.erase();
  92
  93   if (!first_element_read) {
  94     document = new Element(Name);
  95     current_element = document;
  96     first_element_read = true;
  97   } else {
  98     temp_element = new Element(Name);
  99     temp_element->SetParent(current_element);
 100     current_element->AddChildElement(temp_element);
 101     current_element = temp_element;
 102   }
 103
 104   if (current_element == 0L) {
 105     cerr << "No current element read (no top-level element in XML file?)" << endl;
 106     exit (-1);
 107   }
 108
 109   for (int i=0; i<atts.size();i++) {
 110     current_element->AddAttribute(atts.getName(i), atts.getValue(i));
 111   }
 112 }
 113
 114 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 115
 116 void FGXMLParse::endElement (const char * name)
 117 {
 118   if (!working_string.empty()) {
 119     vector <string> work_strings = split(working_string, '\n');
 120     for (int i=0; i<work_strings.size(); i++) current_element->AddData(work_strings[i]);
 121   }
 122
 123   current_element = current_element->GetParent();
 124 }
 125
 126 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 127
 128 void FGXMLParse::data (const char * s, int length)
 129 {
 130   working_string += string(s, length);
 131 }
 132
 133 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 134
 135 void FGXMLParse::pi (const char * target, const char * data)
 136 {
 137 }
 138
 139 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 140
 141 void FGXMLParse::warning (const char * message, int line, int column)
 142 {
 143   cerr << "Warning: " << message << " line: " << line << " column: " << column << endl;
 144 }
 145
 146 } // end namespace JSBSim