irc/TechBot/TechBot.Commands.Common/HResultCommand.cs

   1 using System;
   2 using System.Xml;
   3
   4 using TechBot.Library;
   5
   6 namespace TechBot.Commands.Common
   7 {
   8     [Command("hresult", Help = "!hresult <value>")]
   9     public class HResultCommand : XmlLookupCommand
  10         {
  11         public HResultCommand()
  12                 {
  13                 }
  14
  15         public override string XmlFile
  16         {
  17             get { return Settings.Default.HResultXml; }
  18         }
  19
  20                 public override void ExecuteCommand()
  21                 {
  22             if (string.IsNullOrEmpty(Text))
  23             {
  24                 Say("Please provide a valid HRESULT value.");
  25             }
  26             else
  27             {
  28                 NumberParser np = new NumberParser();
  29                 long hresult = np.Parse(Text);
  30                 if (np.Error)
  31                 {
  32                     Say("{0} is not a valid HRESULT value.", Text);
  33                     return;
  34                 }
  35
  36                 string description = GetHresultDescription(hresult);
  37                 if (description != null)
  38                 {
  39                     Say("{0} is {1}.",
  40                         Text,
  41                         description);
  42                 }
  43                 else
  44                 {
  45                     Say("I don't know about HRESULT {0}.", Text);
  46                 }
  47             }
  48                 }
  49
  50                 public string GetHresultDescription(long hresult)
  51                 {
  52                         XmlElement root = base.m_XmlDocument.DocumentElement;
  53                         XmlNode node = root.SelectSingleNode(String.Format("Hresult[@value='{0}']",
  54                                                                            hresult.ToString("X8")));
  55                         if (node != null)
  56                         {
  57                                 XmlAttribute text = node.Attributes["text"];
  58                                 if (text == null)
  59                                         throw new Exception("Node has no text attribute.");
  60                                 return text.Value;
  61                         }
  62                         else
  63                                 return null;
  64                 }
  65         }
  66 }