reactos/irc/TechBot/TechBot.Commands.Common/ErrorCommand.cs

181 lines
4.7 KiB
C#
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using System;
using System.Xml;
using System.Collections;
using TechBot.Library;
namespace TechBot.Commands.Common
{
[Command("error", Help = "!error <value>")]
public class ErrorCommand : Command
{
private NtStatusCommand ntStatus;
private WinErrorCommand winerror;
private HResultCommand hresult;
public ErrorCommand()
{
this.ntStatus = new NtStatusCommand();
this.winerror = new WinErrorCommand();
this.hresult = new HResultCommand();
}
private static int GetSeverity(long error)
{
return (int)((error >> 30) & 0x3);
}
private static bool IsCustomer(long error)
{
return (error & 0x20000000) != 0;
}
private static bool IsReserved(long error)
{
return (error & 0x10000000) != 0;
}
private static int GetFacility(long error)
{
return (int)((error >> 16) & 0xFFF);
}
private static short GetCode(long error)
{
return (short)((error >> 0) & 0xFFFF);
}
private static string FormatSeverity(long error)
{
int severity = GetSeverity(error);
switch (severity)
{
case 0: return "SUCCESS";
case 1: return "INFORMATIONAL";
case 2: return "WARNING";
case 3: return "ERROR";
}
return null;
}
private static string FormatFacility(long error)
{
int facility = GetFacility(error);
return facility.ToString();
}
private static string FormatCode(long error)
{
int code = GetCode(error);
return code.ToString();
}
public override void ExecuteCommand()
{
if (Parameters.Equals(String.Empty))
{
Say("Please provide an Error Code.");
return;
}
string errorText = Parameters;
retry:
NumberParser np = new NumberParser();
long error = np.Parse(errorText);
if (np.Error)
{
Say("{0} is not a valid Error Code.", Parameters);
return;
}
ArrayList descriptions = new ArrayList();
// Error is out of bounds
if ((ulong)error > uint.MaxValue)
{
// Do nothing
}
// Error is outside of the range [0, 65535]: it cannot be a plain Win32 error code
else if ((ulong)error > ushort.MaxValue)
{
// Customer bit is set: custom error code
if (IsCustomer(error))
{
string description = String.Format("[custom, severity {0}, facility {1}, code {2}]",
FormatSeverity(error),
FormatFacility(error),
FormatCode(error));
descriptions.Add(description);
}
// Reserved bit is set: HRESULT_FROM_NT(ntstatus)
else if (IsReserved(error))
{
int status = (int)(error & 0xCFFFFFFF);
string description = ntStatus.GetNtstatusDescription(status);
if (description == null)
description = status.ToString("X");
description = String.Format("HRESULT_FROM_NT({0})", description);
descriptions.Add(description);
}
// Win32 facility: HRESULT_FROM_WIN32(winerror)
else if (GetFacility(error) == 7)
{
// Must be an error code
if (GetSeverity(error) == 2)
{
short err = GetCode(error);
string description = winerror.GetWinerrorDescription(err);
if (description == null)
description = err.ToString("D");
description = String.Format("HRESULT_FROM_WIN32({0})", description);
descriptions.Add(description);
}
}
}
string winerrorDescription = winerror.GetWinerrorDescription(error);
string ntstatusDescription = ntStatus.GetNtstatusDescription(error);
string hresultDescription = hresult.GetHresultDescription(error);
if (winerrorDescription != null)
descriptions.Add(winerrorDescription);
if (ntstatusDescription != null)
descriptions.Add(ntstatusDescription);
if (hresultDescription != null)
descriptions.Add(hresultDescription);
if (descriptions.Count == 0)
{
// Last chance heuristics: attempt to parse a 8-digit decimal as hexadecimal
if (errorText.Length == 8)
{
errorText = "0x" + errorText;
goto retry;
}
Say("I don't know about Error Code {0}.",
Parameters);
}
else if (descriptions.Count == 1)
{
string description = (string)descriptions[0];
Say("{0} is {1}.",
Parameters,
description);
}
else
{
Say("{0} could be:", Parameters);
foreach (string description in descriptions)
Say("\t{0}", description);
}
}
}
}