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[lsystem3d.git] / src / xmlstructure.h
1 // Copyright (C) 2006 Erik Dahlberg
2 //
3 // This file is part of LSystem3d.
4 //
5 // LSystem3D is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License
7 // as published by the Free Software Foundation; either version 2
8 // of the License, or (at your option) any later version.
9 //
10 // LSystem3D is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
14 //
15 // You should have received a copy of the GNU General Public License
16 // along with LSystem3D; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19
20
21
22 #ifndef XMLSTRUCTURE_H
23 #define XMLSTRUCTURE_H
24
25 #include <string>
26
27 #include <libxml++/document.h>
28 #include <libxml++/nodes/element.h>
29 #include <libxml++/nodes/node.h>
30 #include <libxml++/parsers/domparser.h>
31
32 using namespace std;
33
34
35
36 /**
37 * Basic logic for building and parsing xml-structures
38 */
39 class XMLStructure
40 {
41 public:
42 /**
43 * Constructor
44 */
45 XMLStructure();
46
47 /**
48 * Destructor
49 */
50 ~XMLStructure();
51
52 protected:
53
54 // Saver
55 // -----
56
57 /**
58 * Create new document with root node
59 * @param rootName name of root
60 */
61 void createDocumentWithRoot(string rootName);
62
63 /**
64 * Add new child to root
65 * @param name name of child
66 */
67 void addChildToRoot(string name);
68
69 /**
70 * Add a string as content of current child
71 * @param text the text
72 */
73 void addString(string text);
74
75 /**
76 * Add a number as content of current child
77 * @param value the number
78 */
79 void addNumber(double value);
80
81 /**
82 * Add attribute to current child
83 * @param name name of attribute
84 * @param value value of attribute
85 */
86 void addAttribute(string name, string value);
87
88 /**
89 * Save document to file
90 * @param path path to file
91 */
92 void saveToDisk(string path);
93
94
95 // Loader
96 // ------
97
98 /**
99 * Load document from file
100 * @param path path to file
101 */
102 void loadFromDisk(string path);
103
104 /**
105 * Find all children with the specified name
106 * @param name name of children
107 * @return true if found, else false
108 */
109 bool findChild(string name);
110
111 /**
112 * Find next child in current search result list
113 * @return true if found, else false
114 */
115 bool findNextChild();
116
117 /**
118 * Get content of current child as a string
119 * @return the string
120 */
121 string getString();
122
123 /**
124 * Get content of current child as a number
125 * @return the number
126 */
127 double getNumber();
128
129 /**
130 * Get attribute value of current child
131 * @param name name of attribute
132 * @return the value
133 */
134 string getAttribute(string name);
135
136 private:
137
138 // Saver
139 xmlpp::Element *_rootElement;
140 xmlpp::Element *_activeElement;
141 xmlpp::Document *_activeDocument;
142
143 // Loader
144 xmlpp::DomParser _parser;
145 xmlpp::Node::NodeList _activeList;
146 xmlpp::Node::NodeList::iterator _activeChildInList;
147 };
148
149
150
151 #endif