Added OpenSim.GenericConfig.Xml project, so we can swap to a more generic configuration method, so that it is easier to load configuration data from a ogs server

OpenSim.GenericConfig/Xml/XmlConfig.cs

@@ -0,0 +1,92 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Xml;
+using OpenSim.Framework.Interfaces;
+
+namespace OpenSim.GenericConfig
+{
+    public class XmlConfig : IGenericConfig
+    {
+        private XmlDocument doc;
+        private XmlNode rootNode;
+        private XmlNode configNode;
+        private string fileName;
+
+        public XmlConfig(string filename)
+        {
+            fileName = filename;
+        }
+
+        public void LoadData()
+        {
+            doc = new XmlDocument();
+            try
+            {
+                XmlTextReader reader = new XmlTextReader(fileName);
+                reader.WhitespaceHandling = WhitespaceHandling.None;
+                doc.Load(reader);
+                reader.Close();
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e.Message);
+                return;
+            }
+            try
+            {
+                rootNode = doc.FirstChild;
+                if (rootNode.Name != "Root")
+                    throw new Exception("Error: Invalid .xml File. Missing <Root>");
+
+                configNode = rootNode.FirstChild;
+                if (configNode.Name != "Config")
+                    throw new Exception("Error: Invalid .xml File. <Root> first child should be <Config>");
+                
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e.Message);
+            }
+        }
+
+        public string GetAttribute(string attributeName)
+        {
+            string result = "";
+            if (configNode.Attributes[attributeName] != null)
+            {
+                result = ((XmlAttribute)configNode.Attributes.GetNamedItem(attributeName)).Value;
+            }
+            return result;
+        }
+
+        public bool SetAttribute(string attributeName, string attributeValue)
+        {
+            if (configNode.Attributes[attributeName] != null)
+            {
+                configNode.Attributes.GetNamedItem(attributeName).Value = attributeValue;
+            }
+            else
+            {
+                XmlAttribute attri;
+                attri = doc.CreateAttribute(attributeName);
+                attri.Value = attributeValue;
+                configNode.Attributes.Append(attri);
+            }
+            return true;
+        }
+
+        public void Commit()
+        {
+            doc.Save(fileName);
+        }
+
+        public void Close()
+        {
+            configNode = null;
+            rootNode = null;
+            doc = null;
+        }
+                             
+    }
+}