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-----------------------------------------------------------------------------
-- |
-- 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
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
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