blob: 4e39d72370cf1a2f8d3ee035c389d30f2de3bf55 (
plain)
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
|
-----------------------------------------------------------------------------
-- |
-- Module : Plugins.CommandReader
-- Copyright : (c) John Goerzen
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
-- Stability : unstable
-- Portability : unportable
--
-- A plugin for reading from external commands
-- note: stderr is lost here
--
-----------------------------------------------------------------------------
module Xmobar.Plugins.CommandReader(CommandReader(..)) where
import System.IO
import Xmobar.Run.Commands
import Xmobar.System.Utils (hGetLineSafe)
import System.Process(runInteractiveCommand, getProcessExitCode)
data CommandReader = CommandReader String String
deriving (Read, Show)
instance Exec CommandReader where
alias (CommandReader _ a) = a
start (CommandReader p _) cb = do
(hstdin, hstdout, hstderr, ph) <- runInteractiveCommand p
hClose hstdin
hClose hstderr
hSetBinaryMode hstdout False
hSetBuffering hstdout LineBuffering
forever ph (hGetLineSafe hstdout >>= cb)
where forever ph a =
do a
ec <- getProcessExitCode ph
case ec of
Nothing -> forever ph a
Just _ -> cb "EXITED"
|
