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|
------------------------------------------------------------------------------
-- |
-- Module : Plugins.Uptime
-- Copyright : (c) 2010 Jose Antonio Ortega Ruiz
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : jao@gnu.org
-- Stability : unstable
-- Portability : unportable
-- Created: Sun Dec 12, 2010 20:26
--
--
-- Uptime
--
------------------------------------------------------------------------------
module Plugins.Uptime (Uptime(..)) where
import Plugins
import qualified Data.ByteString.Lazy.Char8 as B
data Uptime = Uptime String Int
deriving (Read, Show)
instance Exec Uptime where
alias (Uptime a _) = a
run (Uptime _ _) = uptime
rate (Uptime _ r) = r
readUptime :: IO Float
readUptime =
fmap (read . B.unpack . head . B.words) (B.readFile "/proc/uptime")
secsPerDay :: Integer
secsPerDay = 24 * 3600
uptime :: IO String
uptime = do
t <- readUptime
let tsecs = floor t
secs = tsecs `mod` secsPerDay
days = tsecs `quot` secsPerDay
hrs = secs `quot` 3600
mins = (secs `mod` 3600) `div` 60
dstr | days == 0 = ""
| otherwise = show days ++ "d "
str x | x < 10 = '0':show x
| otherwise = show x
return $ dstr ++ str hrs ++ ":" ++ str mins
|
