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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
, rmPath
, split
) where
import XMonad
import XMonadContrib.XPrompt
import XMonadContrib.Dmenu
import Control.Monad
import Data.List
import Data.Maybe
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 . fromMaybe "") $ runProcessWithInput "/bin/bash" [] ("compgen -A file " ++ s ++ "\n")
c <- commandCompletionFunction s
hPutStrLn stdout s
return $ map escape . sort . nub $ f ++ c
| otherwise = return []
commandCompletionFunction :: String -> IO [String]
commandCompletionFunction str
| '/' `elem` str = return []
| otherwise = do
p <- getEnv "PATH"
cl p
where
cl = liftM (nub . rmPath . concat) . mapM cmpl . split ':'
cmpl s = filter (isPrefixOf str) `fmap` getFileNames s
getFileNames :: FilePath -> IO [FilePath]
getFileNames fp =
getDirectoryContents fp `catch` \_ -> return []
rmPath :: [String] -> [String]
rmPath s =
map (reverse . fst . break (=='/') . reverse) s
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 "\\@\"'#?$*()[]{};"
|
