blob: 2d0d47c6c3f1722661b0c306c8aaa4701a630633 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
-- |
-- Copyright : (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
-- License : MIT
-- Maintainer : Egor.Tensin@gmail.com
-- Stability : experimental
-- Portability : Windows-only
module Main (main) where
import Control.Monad (void, when)
import Control.Monad.Trans.Except (catchE, runExceptT, throwE)
import System.IO.Error (ioError, isDoesNotExistError)
import Options.Applicative
import qualified WindowsEnv
import Utils.Prompt
import Utils.PromptMessage
data Options = Options
{ optName :: WindowsEnv.VarName
, optYes :: Bool
, optGlobal :: Bool
, optPaths :: [String]
} deriving (Eq, Show)
optionParser :: Parser Options
optionParser = Options
<$> optNameDesc
<*> optYesDesc
<*> optGlobalDesc
<*> optPathsDesc
where
optNameDesc = strOption
$ long "name" <> short 'n'
<> metavar "NAME" <> value "PATH"
<> help "Variable name ('PATH' by default)"
optYesDesc = switch
$ long "yes" <> short 'y'
<> help "Skip confirmation prompt"
optGlobalDesc = switch
$ long "global" <> short 'g'
<> help "Remove for all users"
optPathsDesc = many $ argument str
$ metavar "PATH"
<> help "Directories to remove"
main :: IO ()
main = execParser parser >>= removePath
where
parser = info (helper <*> optionParser) $
fullDesc <> progDesc "Remove directories from your PATH"
removePath :: Options -> IO ()
removePath options = runExceptT doRemovePath >>= either ioError return
where
varName = optName options
pathsToRemove = optPaths options
forAllUsers = optGlobal options
skipPrompt = optYes options
emptyIfMissing e
| isDoesNotExistError e = defaultValue
| otherwise = throwE e
defaultValue = do
expandedPaths <- mapM WindowsEnv.expand pathsToRemove
if pathsToRemove == expandedPaths
then return $ WindowsEnv.VarValue False ""
else return $ WindowsEnv.VarValue True ""
doRemovePath = do
removePathFrom WindowsEnv.CurrentUser
when forAllUsers $
removePathFrom WindowsEnv.AllUsers
removePathFrom profile = do
oldValue <- WindowsEnv.query profile varName `catchE` emptyIfMissing
let oldPaths = WindowsEnv.pathSplit $ show oldValue
let newPaths = filter (flip notElem pathsToRemove) oldPaths
when (length oldPaths /= length newPaths) $ do
let newValue = WindowsEnv.VarValue (WindowsEnv.varValueExpandable oldValue) (WindowsEnv.pathJoin newPaths)
let promptAnd = if skipPrompt
then withoutPrompt
else withPrompt $ oldNewMessage profile varName (show oldValue) (show newValue)
let engrave = WindowsEnv.engrave profile varName newValue
void $ promptAnd engrave
|
