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-rw-r--r--Plugins/CommandReader.hs31
1 files changed, 31 insertions, 0 deletions
diff --git a/Plugins/CommandReader.hs b/Plugins/CommandReader.hs
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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