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-----------------------------------------------------------------------------
-- |
-- Module : Plugins.StdinReader
-- Copyright : (c) Andrea Rossato
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
-- Stability : unstable
-- Portability : unportable
--
-- A plugin for reading from stdin
--
-----------------------------------------------------------------------------
module Plugins.StdinReader where
import Prelude
import System.Posix.Process
import System.Exit
import System.IO
import Control.Exception (SomeException(..), handle)
import Plugins
data StdinReader = StdinReader
deriving (Read, Show)
instance Exec StdinReader where
start StdinReader cb = do
cb =<< handle (\(SomeException e) -> do hPrint stderr e; return "")
(hGetLineSafe stdin)
eof <- hIsEOF stdin
if eof
then exitImmediately ExitSuccess
else start StdinReader cb
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