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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 :: Parser Options
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 add for all users"
pathArgs = many $ argument str $
metavar "PATH" <>
help "Directory path(s)"
main :: IO ()
main = execParser parser >>= addPath
where
parser = info (helper <*> options) $
fullDesc <> progDesc "Add directories to your PATH"
addPath :: Options -> IO ()
addPath options = do
missingPaths <- dropIncludedPaths $ paths options
when (not $ null missingPaths) $ do
oldPath <- Environment.query env $ name options
Environment.engraveWithPrompt env (name options) $ Environment.pathJoin $ missingPaths ++ [oldPath]
where
dropIncludedPaths paths = do
currentPath <- Environment.query env $ name options
return $ filter (flip notElem $ Environment.pathSplit currentPath) paths
env | global options = Environment.AllUsers
| otherwise = Environment.CurrentUser
|
