public void ShowCommandHelp(string cmd)
{
CommandAttribute attr = CommandRegistry.GetCommandAttribute(cmd);
if (attr == null)
{
Console.WriteLine("Unknown command: " + cmd);
Console.WriteLine();
ShowHelp();
return;
}
ShowCommandHelp(attr, "");
Console.WriteLine("Usage: " + cmd + " " + attr.Args);
Console.WriteLine();
Console.WriteLine("Options:");
Type commandType = CommandRegistry.GetCommandType(cmd);
foreach (MemberInfo mi in commandType.GetMembers())
{
if (mi.MemberType != MemberTypes.Field)
{
continue;
}
OptionAttribute[] attribs = mi.GetCustomAttributes(typeof(OptionAttribute), true) as OptionAttribute[];
if (attribs == null || attribs.Length == 0)
{
continue;
}
foreach (OptionAttribute attrib in attribs)
{
Type fieldType = ((FieldInfo)mi).FieldType;
if (!String.IsNullOrEmpty(attrib.AlternateForm))
{
string altform = " /" + attrib.AlternateForm + "";
if (fieldType != typeof(bool))
{
altform += ":ARG";
}
Console.Write(altform.PadRight(20));
}
Console.Write("\t" + attrib.ShortDescription);
if (!String.IsNullOrEmpty(attrib.LongForm))
{
Console.Write(" (also /" + attrib.LongForm);
if (fieldType != typeof(bool))
{
Console.Write(":ARG");
}
Console.Write(")");
}
Console.WriteLine();
}
}
Console.WriteLine();
}