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87 lines
2.3 KiB
C#
87 lines
2.3 KiB
C#
using System;
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using System.Xml;
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namespace TechBot.Library
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{
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public class HresultCommand : BaseCommand, ICommand
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{
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private IServiceOutput serviceOutput;
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private string hresultXml;
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private XmlDocument hresultXmlDocument;
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public HresultCommand(IServiceOutput serviceOutput,
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string hresultXml)
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{
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this.serviceOutput = serviceOutput;
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this.hresultXml = hresultXml;
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hresultXmlDocument = new XmlDocument();
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hresultXmlDocument.Load(hresultXml);
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}
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public bool CanHandle(string commandName)
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{
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return CanHandle(commandName,
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new string[] { "hresult" });
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}
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public void Handle(MessageContext context,
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string commandName,
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string parameters)
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{
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string hresultText = parameters;
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if (hresultText.Equals(String.Empty))
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{
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serviceOutput.WriteLine(context,
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"Please provide a valid HRESULT value.");
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return;
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}
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NumberParser np = new NumberParser();
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long hresult = np.Parse(hresultText);
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if (np.Error)
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{
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serviceOutput.WriteLine(context,
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String.Format("{0} is not a valid HRESULT value.",
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hresultText));
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return;
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}
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string description = GetHresultDescription(hresult);
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if (description != null)
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{
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serviceOutput.WriteLine(context,
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String.Format("{0} is {1}.",
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hresultText,
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description));
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}
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else
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{
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serviceOutput.WriteLine(context,
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String.Format("I don't know about HRESULT {0}.",
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hresultText));
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}
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}
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public string Help()
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{
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return "!hresult <value>";
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}
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public string GetHresultDescription(long hresult)
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{
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XmlElement root = hresultXmlDocument.DocumentElement;
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XmlNode node = root.SelectSingleNode(String.Format("Hresult[@value='{0}']",
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hresult.ToString("X8")));
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if (node != null)
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{
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XmlAttribute text = node.Attributes["text"];
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if (text == null)
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throw new Exception("Node has no text attribute.");
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return text.Value;
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}
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else
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return null;
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}
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}
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}
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