blob: 03d1f6ea0aba82bd4c546191abc009925de7b36c (
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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.ShellPrompt
-- Copyright : (C) 2007 Andrea Rossato
-- License : BSD3
--
-- Maintainer : andrea.rossato@unibz.it
-- Stability : unstable
-- Portability : unportable
--
-- A shell prompt for XMonad
--
-----------------------------------------------------------------------------
module XMonadContrib.ShellPrompt (
-- * Usage
-- $usage
shellPrompt
, getShellCompl
, split
) where
import XMonad
import XMonadContrib.XPrompt
import XMonadContrib.Run
import Control.Monad
import Data.List
import Data.Set (toList, fromList)
import System.Directory
import System.IO
import System.Environment
-- $usage
--
-- 1. In Config.hs add:
--
-- > import XMonadContrib.XPrompt
-- > import XMonadContrib.ShellPrompt
--
-- 2. In your keybindings add something like:
--
-- > , ((modMask .|. controlMask, xK_x), shellPrompt defaultXPConfig)
--
-- %import XMonadContrib.XPrompt
-- %import XMonadContrib.ShellPrompt
-- %keybind , ((modMask .|. controlMask, xK_x), shellPrompt defaultXPConfig)
data Shell = Shell
instance XPrompt Shell where
showXPrompt Shell = "Run: "
shellPrompt :: XPConfig -> X ()
shellPrompt c = do
cmds <- io $ getCommands
mkXPrompt Shell c (getShellCompl cmds) spawn
getShellCompl :: [String] -> String -> IO [String]
getShellCompl cmds s | s == "" || last s == ' ' = return []
| otherwise = do
f <- fmap lines $ runProcessWithInput "/bin/bash" [] ("compgen -A file " ++ s ++ "\n")
return . map escape . uniqSort $ f ++ commandCompletionFunction cmds s
uniqSort :: Ord a => [a] -> [a]
uniqSort = toList . fromList
commandCompletionFunction :: [String] -> String -> [String]
commandCompletionFunction cmds str | '/' `elem` str = []
| otherwise = filter (isPrefixOf str) cmds
getCommands :: IO [String]
getCommands = do
p <- getEnv "PATH" `catch` const (return [])
let ds = split ':' p
fp d f = d ++ "/" ++ f
es <- forM ds $ \d -> do
exists <- doesDirectoryExist d
if exists
then getDirectoryContents d >>= filterM (isExecutable . fp d)
else return []
return . uniqSort . concat $ es
isExecutable :: FilePath ->IO Bool
isExecutable f = do
fe <- doesFileExist f
if fe
then fmap executable $ getPermissions f
else return False
split :: Eq a => a -> [a] -> [[a]]
split _ [] = []
split e l =
f : split e (rest ls)
where
(f,ls) = span (/=e) l
rest s | s == [] = []
| otherwise = tail s
escape :: String -> String
escape [] = ""
escape (' ':xs) = "\\ " ++ escape xs
escape (x:xs)
| isSpecialChar x = '\\' : x : escape xs
| otherwise = x : escape xs
isSpecialChar :: Char -> Bool
isSpecialChar = flip elem "\\@\"'#?$*()[]{};"
|
