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|
-----------------------------------------------------------------------------
-- |
-- Module : Plugins.Monitors.Mem
-- Copyright : (c) Andrea Rossato
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
-- Stability : unstable
-- Portability : unportable
--
-- A memory monitor for Xmobar
--
-----------------------------------------------------------------------------
module Plugins.Monitors.Mem (memConfig, runMem, totalMem, usedMem) where
import Plugins.Monitors.Common
import qualified Data.Map as M
import System.Console.GetOpt
data MemOpts = MemOpts
{ usedIconPattern :: Maybe IconPattern
, freeIconPattern :: Maybe IconPattern
}
defaultOpts :: MemOpts
defaultOpts = MemOpts
{ usedIconPattern = Nothing
, freeIconPattern = Nothing
}
options :: [OptDescr (MemOpts -> MemOpts)]
options =
[ Option "" ["used-icon-pattern"] (ReqArg (\x o ->
o { usedIconPattern = Just $ parseIconPattern x }) "") ""
, Option "" ["free-icon-pattern"] (ReqArg (\x o ->
o { freeIconPattern = Just $ parseIconPattern x }) "") ""
]
parseOpts :: [String] -> IO MemOpts
parseOpts argv =
case getOpt Permute options argv of
(o, _, []) -> return $ foldr id defaultOpts o
(_, _, errs) -> ioError . userError $ concat errs
memConfig :: IO MConfig
memConfig = mkMConfig
"Mem: <usedratio>% (<cache>M)" -- template
["usedbar", "usedvbar", "usedipat", "freebar", "freevbar", "freeipat", "usedratio", "freeratio",
"total", "free", "buffer", "cache", "rest", "used"] -- available replacements
fileMEM :: IO String
fileMEM = readFile "/proc/meminfo"
parseMEM :: IO [Float]
parseMEM =
do file <- fileMEM
let content = map words $ take 8 $ lines file
info = M.fromList $ map (\line -> (head line, (read $ line !! 1 :: Float) / 1024)) content
[total, free, buffer, cache] = map (info M.!) ["MemTotal:", "MemFree:", "Buffers:", "Cached:"]
rest = free + buffer + cache
used = total - M.findWithDefault rest "MemAvailable:" info
usedratio = used / total
freeratio = free / total
return [usedratio, freeratio, total, free, buffer, cache, rest, used, freeratio]
totalMem :: IO Float
totalMem = fmap ((*1024) . (!!1)) parseMEM
usedMem :: IO Float
usedMem = fmap ((*1024) . (!!6)) parseMEM
formatMem :: MemOpts -> [Float] -> Monitor [String]
formatMem opts (r:fr:xs) =
do let f = showDigits 0
rr = 100 * r
ub <- showPercentBar rr r
uvb <- showVerticalBar rr r
uipat <- showIconPattern (usedIconPattern opts) r
fb <- showPercentBar (100 - rr) (1 - r)
fvb <- showVerticalBar (100 - rr) ( 1 - r)
fipat <- showIconPattern (freeIconPattern opts) (1 - r)
rs <- showPercentWithColors r
fs <- showPercentWithColors fr
s <- mapM (showWithColors f) xs
return (ub:uvb:uipat:fb:fvb:fipat:rs:fs:s)
formatMem _ _ = replicate 10 `fmap` getConfigValue naString
runMem :: [String] -> Monitor String
runMem argv =
do m <- io parseMEM
opts <- io $ parseOpts argv
l <- formatMem opts m
parseTemplate l
|
