- code refactoring

- made more and more easily extensible:
   * commands automatically loaded from plugins dlls
   * declarative and automatic command parameter parsing
   * common code moved to base classes
- other fixes

svn path=/trunk/; revision=33344

irc/TechBot/TechBot.Library/Commands/WmCommand.cs

@@ -0,0 +1,96 @@
+using System;
+using System.Xml;
+
+namespace TechBot.Library
+{
+    [Command("wm" , Help = "!wm <value> or !wm <name>")]
+	public class WMCommand : XmlCommand
+	{
+        private string m_WMText = null;
+
+        public WMCommand()
+		{
+		}
+
+        public override string XmlFile
+        {
+            get { return Settings.Default.WMXml; }
+        }
+		
+        [CommandParameter("wm", "The windows message to check")]
+        public string WMText
+        {
+            get { return m_WMText; }
+            set { m_WMText = value; }
+        }
+
+		public override void ExecuteCommand()
+		{
+            if (WMText.Equals(String.Empty))
+			{
+				TechBot.ServiceOutput.WriteLine(Context,
+				                        "Please provide a valid window message value or name.");
+				return;
+			}
+
+			NumberParser np = new NumberParser();
+            long wm = np.Parse(WMText);
+			string output;
+			if (np.Error)
+			{
+				// Assume "!wm <name>" form.
+                output = GetWmNumber(WMText);
+			}
+			else
+			{
+				output = GetWmDescription(wm);
+			}
+
+			if (output != null)
+			{
+                TechBot.ServiceOutput.WriteLine(Context,
+				                        String.Format("{0} is {1}.",
+                                                      WMText,
+			        	                              output));
+			}
+			else
+			{
+                TechBot.ServiceOutput.WriteLine(Context,
+				                        String.Format("I don't know about window message {0}.",
+                                                      WMText));
+			}
+		}
+
+		private string GetWmDescription(long wm)
+		{
+			XmlElement root = base.m_XmlDocument.DocumentElement;
+			XmlNode node = root.SelectSingleNode(String.Format("WindowMessage[@value='{0}']",
+			                                                   wm));
+			if (node != null)
+			{
+				XmlAttribute text = node.Attributes["text"];
+				if (text == null)
+					throw new Exception("Node has no text attribute.");
+				return text.Value;
+			}
+			else
+				return null;
+		}
+		
+		private string GetWmNumber(string wmName)
+		{
+			XmlElement root = base.m_XmlDocument.DocumentElement;
+			XmlNode node = root.SelectSingleNode(String.Format("WindowMessage[@text='{0}']",
+			                                                   wmName));
+			if (node != null)
+			{
+				XmlAttribute value = node.Attributes["value"];
+				if (value == null)
+					throw new Exception("Node has no value attribute.");
+				return value.Value;
+			}
+			else
+				return null;
+		}
+	}
+}