summaryrefslogtreecommitdiffhomepage
path: root/Plugins/PipeReader.hs
blob: 8fa2e8e3cc2077cbe91752a310efb4fd61fd49e1 (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
-----------------------------------------------------------------------------
-- |
-- Module      :  Plugins.PipeReader
-- Copyright   :  (c) Andrea Rossato
-- License     :  BSD-style (see LICENSE)
-- 
-- Maintainer  :  Andrea Rossato <andrea.rossato@unibz.it>
-- Stability   :  unstable
-- Portability :  unportable
--
-- A plugin for reading from named pipes
--
-----------------------------------------------------------------------------

module Plugins.PipeReader where

import System.IO
import Plugins

data PipeReader = PipeReader String
    deriving (Read, Show)

instance Exec PipeReader where 
    alias (PipeReader p)    = p
    start (PipeReader p) cb = do
        h <- openFile p ReadMode
        forever (hGetLine h >>= cb)
        where forever a = a >> forever a