1 module Opts

     2 (

     3 	getOpts,

     4 ) where

     5 

     6 import System

     7 import System.Console.GetOpt

     8 import Network

     9 import Data.Maybe ( fromMaybe )

    10 import Miscutils

    11 import System.IO.Unsafe

    12 

    13 

    14 options :: [OptDescr (ServerInfo -> ServerInfo)]

    15 options = [

    16 	Option ['p'] ["port"] (ReqArg readListenPort "PORT") "listen on PORT",

    17 	Option ['d'] ["dedicated"] (ReqArg readDedicated "BOOL") "start as dedicated (True or False)",

    18 	Option []    ["password"] (ReqArg readPassword "STRING") "admin password"

    19 	]

    20 

    21 readListenPort, readDedicated, readPassword :: String -> ServerInfo -> ServerInfo

    22 readListenPort str opts = opts{listenPort = readPort}

    23 	where

    24 		readPort = fromInteger $ fromMaybe 46631 (maybeRead str :: Maybe Integer)

    25 

    26 readDedicated str opts = opts{isDedicated = readDedicated}

    27 	where

    28 		readDedicated = fromMaybe True (maybeRead str :: Maybe Bool)

    29 

    30 readPassword str opts = opts{adminPassword = str}

    31 

    32 getOpts :: ServerInfo -> IO ServerInfo

    33 getOpts opts = do

    34 	args <- getArgs

    35 	case getOpt Permute options args of

    36 		(o, [], []) -> return $ foldr ($) opts o

    37 		(_,_,errs) -> ioError (userError (concat errs ++ usageInfo header options))

    38 	where header = "Usage: newhwserv [OPTION...]"