gameServer/Opts.hs
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{-
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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 \-}
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{-# LANGUAGE CPP #-}
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module Opts
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(
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    getOpts,
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) where
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import System.Environment
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import System.Console.GetOpt
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import Data.Maybe ( fromMaybe )
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-------------------
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import CoreTypes
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import Utils
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options :: [OptDescr (ServerInfo -> ServerInfo)]
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options = [
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    Option "p" ["port"] (ReqArg readListenPort "PORT") "listen on PORT",
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    Option "d" ["dedicated"] (ReqArg readDedicated "BOOL") "start as dedicated (True or False)"
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    ]
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readListenPort
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    , readDedicated
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    :: String -> ServerInfo -> ServerInfo
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readListenPort str opts = opts{listenPort = readPort}
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    where
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        readPort = fromInteger $ fromMaybe 46631 (maybeRead str :: Maybe Integer)
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readDedicated str opts = opts{isDedicated = readDed}
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    where
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        readDed = fromMaybe True (maybeRead str :: Maybe Bool)
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getOpts :: ServerInfo -> IO ServerInfo
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getOpts opts = do
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    args <- getArgs
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    case getOpt Permute options args of
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        (o, [], []) -> return $ foldr ($) opts{runArgs = args} o
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        (_,_,errs) -> ioError (userError (concat errs ++ usageInfo header options))
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    where header = "Usage: hedgewars-server [OPTION...]"