added PipeReader2 which accepts a default

1 files changed, 30 insertions, 0 deletions

diff --git a/src/Plugins/PipeReader2.hs b/src/Plugins/PipeReader2.hs
new file mode 100644
index 0000000..511f107
--- /dev/null
+++ b/src/Plugins/PipeReader2.hs
@@ -0,0 +1,30 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.PipeReader2
+-- 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 named pipes. As opposed to PipeReader, this
+-- plugin displays a default string when it starts.
+--
+-----------------------------------------------------------------------------
+
+module Plugins.PipeReader2 where
+
+import System.IO
+import Plugins
+
+data PipeReader2 = PipeReader2 String String String
+    deriving (Read, Show)
+
+instance Exec PipeReader2 where
+    alias (PipeReader2 _ a _)    = a
+    start (PipeReader2 p _ def) cb = do
+        h <- openFile p ReadWriteMode
+        cb def
+        forever (hGetLineSafe h >>= cb)
+        where forever a = a >> forever a