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|
------------------------------------------------------------------------------
-- |
-- Module : Plugins.Monitors.ThermalZone
-- Copyright : (c) 2011, 2013 Jose Antonio Ortega Ruiz
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : jao@gnu.org
-- Stability : unstable
-- Portability : portable
-- Created : Fri Feb 25, 2011 03:18
--
--
-- A thermal zone plugin based on the sysfs linux interface.
-- See http://kernel.org/doc/Documentation/thermal/sysfs-api.txt
--
------------------------------------------------------------------------------
module Xmobar.Plugins.Monitors.ThermalZone (thermalZoneConfig, runThermalZone) where
import Xmobar.Plugins.Monitors.Common
import System.Posix.Files (fileExist)
import Control.Exception (IOException, catch)
import qualified Data.ByteString.Char8 as B
-- | Default thermal configuration.
thermalZoneConfig :: IO MConfig
thermalZoneConfig = mkMConfig "<temp>C" ["temp"]
-- | Retrieves thermal information. Argument is name of thermal
-- directory in \/sys\/clas\/thermal. Returns the monitor string
-- parsed according to template (either default or user specified).
runThermalZone :: [String] -> Monitor String
runThermalZone args = do
let zone = head args
file = "/sys/class/thermal/thermal_zone" ++ zone ++ "/temp"
handleIOError :: IOException -> IO (Maybe B.ByteString)
handleIOError _ = return Nothing
parse = return . (read :: String -> Int) . B.unpack
exists <- io $ fileExist file
if exists
then do contents <- io $ catch (fmap Just $ B.readFile file) handleIOError
case contents of
Just d -> do
mdegrees <- parse d
temp <- showWithColors show (mdegrees `quot` 1000)
parseTemplate [ temp ]
Nothing -> getConfigValue naString
else getConfigValue naString
|
