module Xmobar.Plugins.Monitors.Load.Linux (fetchLoads) where
import Xmobar.Plugins.Monitors.Load.Common (Result(..))
import qualified Data.ByteString.Lazy.Char8 as B
import System.Posix.Files (fileExist)
parseLoadAvgs :: B.ByteString -> Result
parseLoadAvgs :: ByteString -> Result
parseLoadAvgs =
[Float] -> Result
Result forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a b. (a -> b) -> [a] -> [b]
map (forall a. Read a => String -> a
read forall b c a. (b -> c) -> (a -> b) -> a -> c
. ByteString -> String
B.unpack) forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. Int -> [a] -> [a]
take Int
3 forall b c a. (b -> c) -> (a -> b) -> a -> c
. ByteString -> [ByteString]
B.words forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. [a] -> a
head forall b c a. (b -> c) -> (a -> b) -> a -> c
. ByteString -> [ByteString]
B.lines
fetchLoads :: IO Result
fetchLoads :: IO Result
fetchLoads = do
let file :: String
file = String
"/proc/loadavg"
Bool
exists <- String -> IO Bool
fileExist String
file
if Bool
exists then
ByteString -> Result
parseLoadAvgs forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> String -> IO ByteString
B.readFile String
file
else
forall (m :: * -> *) a. Monad m => a -> m a
return Result
NA