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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 Control.Monad (when)
import Options.Applicative
import qualified Environment
data Options = Options
{ name :: String
, global :: Bool
, paths :: [String]
} deriving (Eq, Show)
options = Options
<$> nameOption
<*> globalOption
<*> pathArgs
where
nameOption = strOption $
long "name" <> short 'n' <> metavar "NAME" <> value "PATH" <>
help "Specify variable name ('PATH' by default)"
globalOption = switch $
long "global" <> short 'g' <>
help "Whether to remove for all users"
pathArgs = many $ argument str $
metavar "PATH" <>
help "Directory path(s)"
main :: IO ()
main = execParser parser >>= removePath
where
parser = info (helper <*> options) $
fullDesc <> progDesc "Remove directories from your PATH"
removePath :: Options -> IO ()
removePath options = do
let varName = name options
userVal <- Environment.queryFromRegistry Environment.CurrentUserEnvironment varName
let userValParts = Environment.splitPaths userVal
let newUserValParts = filter (flip notElem $ paths options) userValParts
when (length userValParts /= length newUserValParts) $ do
Environment.saveToRegistryWithPrompt Environment.CurrentUserEnvironment varName $ Environment.joinPaths newUserValParts
when (global options) $ do
globalVal <- Environment.queryFromRegistry Environment.AllUsersEnvironment varName
let globalValParts = Environment.splitPaths globalVal
let newGlobalValParts = filter (flip notElem $ paths options) globalValParts
when (length globalValParts /= length newGlobalValParts) $ do
Environment.saveToRegistryWithPrompt Environment.AllUsersEnvironment varName $ Environment.joinPaths newGlobalValParts
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