Import TechBot

svn path=/trunk/; revision=13064

irc/TechBot/TechBot.Library/WinerrorCommand.cs

@@ -0,0 +1,81 @@
+using System;
+using System.Xml;
+
+namespace TechBot.Library
+{
+	public class WinerrorCommand : BaseCommand, ICommand
+	{
+		private IServiceOutput serviceOutput;
+		private string winerrorXml;
+		private XmlDocument winerrorXmlDocument;
+
+		public WinerrorCommand(IServiceOutput serviceOutput,
+		                       string winerrorXml)
+		{
+			this.serviceOutput = serviceOutput;
+			this.winerrorXml = winerrorXml;
+			winerrorXmlDocument = new XmlDocument();
+			winerrorXmlDocument.Load(winerrorXml);
+		}
+		
+		public bool CanHandle(string commandName)
+		{
+			return CanHandle(commandName,
+			                 new string[] { "winerror" });
+		}
+
+		public void Handle(string commandName,
+		                   string parameters)
+		{
+			string winerrorText = parameters;
+			if (winerrorText.Equals(String.Empty))
+			{
+				serviceOutput.WriteLine("Please provide a valid System Error Code value.");
+				return;
+			}
+
+			NumberParser np = new NumberParser();
+			long winerror = np.Parse(winerrorText);
+			if (np.Error)
+			{
+				serviceOutput.WriteLine(String.Format("{0} is not a valid System Error Code value.",
+				                                      winerrorText));
+				return;
+			}
+			
+			string description = GetWinerrorDescription(winerror);
+			if (description != null)
+			{
+				serviceOutput.WriteLine(String.Format("{0} is {1}.",
+				                                      winerrorText,
+				                                      description));
+			}
+			else
+			{
+				serviceOutput.WriteLine(String.Format("I don't know about System Error Code {0}.",
+				                                      winerrorText));
+			}
+		}
+		
+		public string Help()
+		{
+			return "!winerror <value>";
+		}
+		
+		private string GetWinerrorDescription(long winerror)
+		{
+			XmlElement root = winerrorXmlDocument.DocumentElement;
+			XmlNode node = root.SelectSingleNode(String.Format("Winerror[@value='{0}']",
+			                                                   winerror));
+			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;
+		}
+	}
+}