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|
-----------------------------------------------------------------------------
-- |
-- 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.Dmenu
import Control.Monad
import Data.List
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 = mkXPrompt Shell c getShellCompl spawn
getShellCompl :: String -> IO [String]
getShellCompl s
| s /= "" && last s /= ' ' = do
f <- fmap lines $ runProcessWithInput "/bin/bash" [] ("compgen -A file " ++ s ++ "\n")
c <- commandCompletionFunction s
return . map escape . sort . nub $ f ++ c
| otherwise = return []
commandCompletionFunction :: String -> IO [String]
commandCompletionFunction str
| '/' `elem` str = return []
| otherwise = 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 . filter (isPrefixOf str) . 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 "\\@\"'#?$*()[]{};"
|
