summaryrefslogtreecommitdiffhomepage
path: root/src/Plugins/StdinReader.hs
diff options
context:
space:
mode:
Diffstat (limited to 'src/Plugins/StdinReader.hs')
-rw-r--r--src/Plugins/StdinReader.hs33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/Plugins/StdinReader.hs b/src/Plugins/StdinReader.hs
new file mode 100644
index 0000000..2ee217e
--- /dev/null
+++ b/src/Plugins/StdinReader.hs
@@ -0,0 +1,33 @@
+-----------------------------------------------------------------------------
+-- |
+-- 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 hiding (catch)
+import System.Posix.Process
+import System.Exit
+import System.IO
+import Control.Exception (SomeException(..),catch)
+import Plugins
+
+data StdinReader = StdinReader
+ deriving (Read, Show)
+
+instance Exec StdinReader where
+ start StdinReader cb = do
+ cb =<< catch (hGetLineSafe stdin) (\(SomeException e) -> do hPrint stderr e; return "")
+ eof <- hIsEOF stdin
+ if eof
+ then exitImmediately ExitSuccess
+ else start StdinReader cb