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-rw-r--r--src/Xmobar/Run/Command.hs54
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diff --git a/src/Xmobar/Run/Command.hs b/src/Xmobar/Run/Command.hs
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-------------------------------------------------------------------------------
--- |
--- Module: Xmobar.Plugins.Command
--- Copyright: (c) 2018 Jose Antonio Ortega Ruiz
--- License: BSD3-style (see LICENSE)
---
--- Maintainer: jao@gnu.org
--- Stability: unstable
--- Portability: portable
--- Created: Sun Dec 02, 2018 05:29
---
---
--- The basic Command plugin
---
-------------------------------------------------------------------------------
-
-
-module Xmobar.Run.Command where
-
-import Control.Exception (handle, SomeException(..))
-import System.Process
-import System.Exit
-import System.IO (hClose, hGetLine)
-
-import Xmobar.Run.Exec
-
-data Command = Com Program Args Alias Rate
- | ComX Program Args String Alias Rate
- deriving (Show,Read,Eq)
-
-type Args = [String]
-type Program = String
-type Alias = String
-type Rate = Int
-
-instance Exec Command where
- alias (ComX p _ _ a _) =
- if p /= "" then (if a == "" then p else a) else ""
- alias (Com p a al r) = alias (ComX p a "" al r)
- start (Com p as al r) cb =
- start (ComX p as ("Could not execute command " ++ p) al r) cb
- start (ComX prog args msg _ r) cb = if r > 0 then go else exec
- where go = doEveryTenthSeconds r exec
- exec = do
- (i,o,e,p) <- runInteractiveProcess prog args Nothing Nothing
- exit <- waitForProcess p
- let closeHandles = hClose o >> hClose i >> hClose e
- getL = handle (\(SomeException _) -> return "")
- (hGetLine o)
- case exit of
- ExitSuccess -> do str <- getL
- closeHandles
- cb str
- _ -> closeHandles >> cb msg