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authorJose Antonio Ortega Ruiz <jao@gnu.org>2010-12-12 22:01:12 +0100
committerJose Antonio Ortega Ruiz <jao@gnu.org>2010-12-12 22:01:12 +0100
commit52be04baa703cb5c0263aecb61f0079230367cd0 (patch)
treea1503d98651867fb2de3bdabaadc41a316757717 /Plugins/Uptime.hs
parentdc4712688986edd9a3f272858b91b94badf2560d (diff)
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New plugin: Uptime
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diff --git a/Plugins/Uptime.hs b/Plugins/Uptime.hs
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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