1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2
3 Module: FGModelLoader.cpp
4 Author: Bertrand Coconnier
5 Date started: 12/14/13
6 Purpose: Read and manage XML data for models definition
7
8 ------------- Copyright (C) 2013 Bertrand Coconnier -------------
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 FUNCTIONAL DESCRIPTION
28 --------------------------------------------------------------------------------
29 This is the place where the XML data is loaded in memory for an access during
30 the models initialization.
31
32 HISTORY
33 --------------------------------------------------------------------------------
34 12/14/13 BC Created
35
36 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
37 INCLUDES
38 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
39
40 #include "FGJSBBase.h"
41 #include "FGModelLoader.h"
42 #include "FGXMLFileRead.h"
43 #include "models/FGModel.h"
44
45 using namespace std;
46
47 namespace JSBSim {
48
49 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
50 CLASS IMPLEMENTATION
51 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
52
Open(Element * el)53 Element_ptr FGModelLoader::Open(Element *el)
54 {
55 Element_ptr document = el;
56 string fname = el->GetAttributeValue("file");
57
58 if (!fname.empty()) {
59 FGXMLFileRead XMLFileRead;
60 SGPath path(SGPath::fromUtf8(fname));
61
62 if (path.isRelative())
63 path = model->FindFullPathName(path);
64
65 if (CachedFiles.find(path.utf8Str()) != CachedFiles.end())
66 document = CachedFiles[path.utf8Str()];
67 else {
68 document = XMLFileRead.LoadXMLDocument(path);
69 if (document == 0L) {
70 cerr << endl << el->ReadFrom()
71 << "Could not open file: " << fname << endl;
72 return NULL;
73 }
74 CachedFiles[path.utf8Str()] = document;
75 }
76
77 if (document->GetName() != el->GetName()) {
78 document->SetParent(el);
79 el->AddChildElement(document);
80 }
81 }
82
83 return document;
84 }
85
CheckPathName(const SGPath & path,const SGPath & filename)86 SGPath CheckPathName(const SGPath& path, const SGPath& filename) {
87 SGPath fullName = path/filename.utf8Str();
88
89 if (fullName.extension() != "xml")
90 fullName.concat(".xml");
91
92 return fullName.exists() ? fullName : SGPath();
93 }
94 }
95