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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 hiding (value)
import qualified Environment
data Options = Options
{ optYes :: Bool
, optGlobal :: Bool
, optName :: String
, optValue :: String
} deriving (Eq, Show)
options :: Parser Options
options = Options
<$> optYesDesc
<*> optGlobalDesc
<*> optNameDesc
<*> optValueDesc
where
optYesDesc = switch $
long "yes" <> short 'y' <>
help "Skip confirmation prompt"
optGlobalDesc = switch $
long "global" <> short 'g' <>
help "Set for all users"
optNameDesc = argument str $
metavar "NAME" <>
help "Variable name"
optValueDesc = argument str $
metavar "VALUE" <>
help "Variable value"
main :: IO ()
main = execParser parser >>= setEnv
where
parser = info (helper <*> options) $
fullDesc <> progDesc "Set environment variable"
setEnv :: Options -> IO ()
setEnv options = engrave varValue
where
varName = optName options
varValue = optValue options
forAllUsers = optGlobal options
env | forAllUsers = Environment.AllUsers
| otherwise = Environment.CurrentUser
skipPrompt = optYes options
engrave value = if skipPrompt
then Environment.engrave env varName value
else Environment.engravePrompt env varName value >> return ()
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