Added a plugin to read named pipes (such as an XMonad logger)

darcs-hash:20070927173529-d6583-e817ee89a436f2d6d8f3c888244c2cd9c2603546.gz

1 files changed, 28 insertions, 0 deletions

diff --git a/Plugins/PipeReader.hs b/Plugins/PipeReader.hs
new file mode 100644
index 0000000..8fa2e8e
--- /dev/null
+++ b/Plugins/PipeReader.hs
@@ -0,0 +1,28 @@
+-----------------------------------------------------------------------------
+-- |
+-- 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