public static CommandBase Create(String commandLine)
{
CommandBase res = null;
Match m = _exCmdLine.Match(commandLine);
if (!m.Success)
{
throw new ApplicationException(String.Format("Unrecognized command format: '{0}'.", commandLine));
}
String commandName = m.Groups["cmd"].Value.ToLower();
Type commandT;
if (!_commandsDescr.TryGetValue(commandName, out commandT))
{
throw new ApplicationException(String.Format("The command '{0}' is unknown.", commandName));
}
res = (CommandBase)Activator.CreateInstance(commandT, true);
Int32 numArgs = m.Groups["arg"].Captures.Count;
if (numArgs < res.NumberArgsMin || numArgs > res.NumberArgsMax)
{
throw new ApplicationException(String.Format("The command '{0}' has improper number of arguments. Must be {1:d} <= N <= {2:d}.", commandLine, res.NumberArgsMin, res.NumberArgsMax));
}
res._arguments = new ArgInfo[numArgs];
Int32 i = 0;
foreach (Capture arg in m.Groups["arg"].Captures)
{
String pathArg = arg.Value.Trim();
if (!_exPath.IsMatch(pathArg))
{
throw new ApplicationException(String.Format("Argument has unrecognized characters: '{0}'.", arg.Value));
}
res._arguments[i++] = new ArgInfo(pathArg);
}
res.Construct();
return(res);
}