blob: fef8a45c657d0d2826cc7febb1746e340b77eadf (
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
|
-----------------------------------------------------------------------------
-- |
-- Module : Plugins.CommandReader
-- Copyright : (c) John Goerzen
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Andrea Rossato <andrea.rossato@unibz.it>
-- Stability : unstable
-- Portability : unportable
--
-- A plugin for reading from external commands
-- note: stderr is lost here
--
-----------------------------------------------------------------------------
module Plugins.CommandReader where
import System.IO
import Plugins
import System.Process(runInteractiveCommand)
data CommandReader = CommandReader String String
deriving (Read, Show)
instance Exec CommandReader where
alias (CommandReader _ a) = a
start (CommandReader p _) cb = do
(hstdin, hstdout, hstderr, _) <- runInteractiveCommand p
hClose hstdin
hClose hstderr
forever (hGetLineSafe hstdout >>= cb)
where forever a = a >> forever a
|
