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-rw-r--r--src/lib/Xmobar/Plugins/BufferedPipeReader.hs88
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diff --git a/src/lib/Xmobar/Plugins/BufferedPipeReader.hs b/src/lib/Xmobar/Plugins/BufferedPipeReader.hs
deleted file mode 100644
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--- a/src/lib/Xmobar/Plugins/BufferedPipeReader.hs
+++ /dev/null
@@ -1,88 +0,0 @@
------------------------------------------------------------------------------
--- |
--- Module : Plugins.BufferedPipeReader
--- Copyright : (c) Jochen Keil
--- License : BSD-style (see LICENSE)
---
--- Maintainer : Jochen Keil <jochen dot keil at gmail dot com>
--- Stability : unstable
--- Portability : unportable
---
--- A plugin for reading (temporarily) from named pipes with reset
---
------------------------------------------------------------------------------
-
-module Xmobar.Plugins.BufferedPipeReader(BufferedPipeReader(..)) where
-
-import Control.Monad(forM_, when, void)
-import Control.Concurrent
-import Control.Concurrent.STM
-import System.IO
-import System.IO.Unsafe(unsafePerformIO)
-
-import Xmobar.Utils(hGetLineSafe)
-import Xmobar.Run.Commands
-import Xmobar.System.Signal
-import Xmobar.System.Environment
-
-data BufferedPipeReader = BufferedPipeReader String [(Int, Bool, String)]
- deriving (Read, Show)
-
-{-# NOINLINE signal #-}
-signal :: MVar SignalType
-signal = unsafePerformIO newEmptyMVar
-
-instance Exec BufferedPipeReader where
- alias ( BufferedPipeReader a _ ) = a
-
- trigger br@( BufferedPipeReader _ _ ) sh =
- takeMVar signal >>= sh . Just >> trigger br sh
-
- start ( BufferedPipeReader _ ps ) cb = do
-
- (chan, str, rst) <- initV
- forM_ ps $ \p -> forkIO $ reader p chan
- writer chan str rst
-
- where
- initV :: IO (TChan (Int, Bool, String), TVar (Maybe String), TVar Bool)
- initV = atomically $ do
- tc <- newTChan
- ts <- newTVar Nothing
- tb <- newTVar False
- return (tc, ts, tb)
-
- reader :: (Int, Bool, FilePath) -> TChan (Int, Bool, String) -> IO ()
- reader p@(to, tg, fp) tc = do
- fp' <- expandEnv fp
- openFile fp' ReadWriteMode >>= hGetLineSafe >>= \dt ->
- atomically $ writeTChan tc (to, tg, dt)
- reader p tc
-
- writer :: TChan (Int, Bool, String)
- -> TVar (Maybe String) -> TVar Bool -> IO ()
- writer tc ts otb = do
- (to, tg, dt, ntb) <- update
- cb dt
- when tg $ putMVar signal $ Reveal 0
- when (to /= 0) $ sfork $ reset to tg ts ntb
- writer tc ts ntb
-
- where
- sfork :: IO () -> IO ()
- sfork f = void (forkIO f)
-
- update :: IO (Int, Bool, String, TVar Bool)
- update = atomically $ do
- (to, tg, dt) <- readTChan tc
- when (to == 0) $ writeTVar ts $ Just dt
- writeTVar otb False
- tb <- newTVar True
- return (to, tg, dt, tb)
-
- reset :: Int -> Bool -> TVar (Maybe String) -> TVar Bool -> IO ()
- reset to tg ts tb = do
- threadDelay ( to * 100 * 1000 )
- readTVarIO tb >>= \b -> when b $ do
- when tg $ putMVar signal $ Hide 0
- readTVarIO ts >>= maybe (return ()) cb