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-----------------------------------------------------------------------------
-- |
-- Module : Plugins.Monitors.Swap.Linux
-- Copyright : (c) Andrea Rossato
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
-- Stability : unstable
-- Portability : unportable
--
-- A swap usage monitor for Xmobar
--
-----------------------------------------------------------------------------
module Xmobar.Plugins.Monitors.Swap.Linux (parseMEM) where
import qualified Data.ByteString.Lazy.Char8 as B
fileMEM :: IO B.ByteString
fileMEM = B.readFile "/proc/meminfo"
parseMEM :: IO [Float]
parseMEM =
do file <- fileMEM
let li i l
| l /= [] = head l !! i
| otherwise = B.empty
fs s l
| null l = False
| otherwise = head l == B.pack s
get_data s = flip (/) 1024 . read . B.unpack . li 1 . filter (fs s)
st = map B.words . B.lines $ file
tot = get_data "SwapTotal:" st
free = get_data "SwapFree:" st
return [(tot - free) / tot, tot, tot - free, free]
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