Import of new DirExec module.

  - allows execution of executable files from specific directory

darcs-hash:20080229212257-69f16-9a166d655acac098d7835e2d44764c40aae1baa0.gz

1 files changed, 90 insertions, 0 deletions

diff --git a/XMonad/Prompt/DirExec.hs b/XMonad/Prompt/DirExec.hs
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+-----------------------------------------------------------------------------
+-- |
+-- Module      :  XMonad.Prompt.DirExec
+-- Copyright   :  (C) 2008 Juraj Hercek
+-- License     :  BSD3
+--
+-- Maintainer  :  juhe_xmonad@hck.sk
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- A directory file executables prompt for XMonad. This might be useful if you
+-- don't want to have scripts in your PATH environment variable (same
+-- executable names, different behavior) - otherwise you might want to use
+-- "XMonad.Prompt.Shell" instead - but you want to have easy access to these
+-- executables through the xmonad's prompt.
+--
+-----------------------------------------------------------------------------
+
+module XMonad.Prompt.DirExec
+    ( -- * Usage
+      -- $usage
+      dirExecPrompt
+    , dirExecPromptWithName
+    ) where
+
+import System.Directory
+import Control.Monad
+import Data.List
+import XMonad
+import XMonad.Prompt
+
+-- $usage
+-- 1. In your @~\/.xmonad\/xmonad.hs@:
+--
+-- > import XMonad.Prompt.DirExec
+--
+-- 2. In your keybindings add something like:
+--
+-- >   , ("M-C-x", dirExecPrompt defaultXPConfig "/home/joe/.scipts")
+--
+-- or
+--
+-- >   , ("M-C-x", dirExecPromptWithName defaultXPConfig "/home/joe/.scripts"
+-- >                                                     "My Scripts: ")
+--
+-- The first alternative uses the last element of the directory path for
+-- a name of prompt. The second alternative uses the provided string
+-- for the name of the prompt.
+--
+-- For detailed instruction on editing the key binding see
+-- "XMonad.Doc.Extending#Editing_key_bindings".
+
+data DirExec = DirExec String
+
+instance XPrompt DirExec where
+    showXPrompt (DirExec name) = name
+
+-- | Function 'dirExecPrompt' starts the prompt with list of all executable
+-- files in directory specified by 'FilePath'. The name of the prompt is taken
+-- from the last element of the path. If you specify root directory - @/@ - as
+-- the path, name @Root:@ will be used as the name of the prompt instead. The
+-- 'XPConfig' parameter can be used to customize visuals of the prompt.
+dirExecPrompt :: XPConfig -> FilePath -> X ()
+dirExecPrompt cfg path = do
+    let name = (++ ": ") . last
+                         . (["Root"] ++) -- handling of "/" path parameter
+                         . words
+                         . map (\x -> if x == '/' then ' ' else x)
+                         $ path
+    dirExecPromptWithName cfg path name
+
+-- | Function 'dirExecPromptWithName' does the same as 'dirExecPrompt' except
+-- the name of the prompt is specified by 'String' parameter.
+dirExecPromptWithName :: XPConfig -> FilePath -> String -> X ()
+dirExecPromptWithName cfg path name = do
+    let path' = path ++ "/"
+    cmds <- io $ getDirectoryExecutables path'
+    mkXPrompt (DirExec name) cfg (compList cmds) (spawn . (path' ++))
+    where
+        compList cmds s = return . filter (isInfixOf s) $ cmds
+
+getDirectoryExecutables :: FilePath -> IO [String]
+getDirectoryExecutables path =
+    (getDirectoryContents path >>=
+        filterM (\x -> let x' = path ++ x in
+            liftM2 (&&)
+                (doesFileExist x')
+                (liftM executable (getPermissions x'))))
+    `catch` (return . return . show)
+