lsystem3d/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