--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netserver/Opts.hs	Fri Oct 10 13:18:45 2008 +0000
@@ -0,0 +1,30 @@
+module Opts where
+
+import System
+import System.Console.GetOpt
+import Network
+import Data.Maybe ( fromMaybe )
+import Miscutils
+
+data Flag = ListenPort PortNumber
+	deriving Show
+
+options :: [OptDescr Flag]
+options = [
+	Option ['p'] ["port"] (OptArg defaultPort "PORT") "listen on PORT"
+	]
+
+defaultPort :: Maybe String -> Flag
+defaultPort str = ListenPort $ fromInteger (fromMaybe 46631 (maybeRead (fromMaybe "46631" str) :: Maybe Integer))
+
+opts :: IO [Flag]
+opts = do
+	args <- getArgs
+	case getOpt Permute options args of
+		(o, [], []) -> return o
+		(_,_,errs) -> ioError (userError (concat errs ++ usageInfo header options))
+	where header = "Usage: newhwserv [OPTION...]"
+
+getPort :: [Flag] -> PortNumber
+getPort [] = 46631
+getPort (ListenPort a:flags) = a