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{-
- Copyright 2015 Egor Tensin <Egor.Tensin@gmail.com>
- This file is licensed under the terms of the MIT License.
- See LICENSE.txt for details.
-}
module Main (main) where
import Options.Applicative
import qualified Environment
data Options = Options
{ optGlobal :: Bool
, optName :: String
} deriving (Eq, Show)
options :: Parser Options
options = Options
<$> optGlobalDesc
<*> optNameDesc
where
optGlobalDesc = switch $
long "global" <> short 'g' <>
help "Whether to unset for all users"
optNameDesc = argument str $
metavar "NAME" <>
help "Variable name"
main :: IO ()
main = execParser parser >>= unsetEnv
where
parser = info (helper <*> options) $
fullDesc <> progDesc "Unset environment variables"
unsetEnv :: Options -> IO ()
unsetEnv options = Environment.wipeWithPrompt env varName
where
env | optGlobal options = Environment.AllUsers
| otherwise = Environment.CurrentUser
varName = optName options
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