1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
{-# LANGUAGE TypeOperators #-}
module Rahm.Desktop.Logger
( getLogLevel,
setLogLevel,
logs,
LogLevel (..),
)
where
import Control.Exception
import Control.Monad (forM_, join, when)
import Data.Time.LocalTime (getZonedTime)
import Text.Printf (PrintfArg, PrintfType, printf)
import XMonad
( ExtensionClass (..),
StateExtension (PersistentExtension),
X,
XConf (config),
XConfig (logHook),
asks,
io,
)
import qualified XMonad.Util.ExtensibleState as XS (get, put)
data LogLevel = Trace | Debug | Info | Warn | Error | Fatal
deriving (Show, Read, Ord, Eq, Enum, Bounded)
newtype LoggerState = LoggerState
{ logLevel :: LogLevel
}
deriving (Show, Read, Eq)
instance ExtensionClass LoggerState where
initialValue = LoggerState Info
extensionType = PersistentExtension
class (PrintfType (Printf t)) => LoggerType t where
type Printf t :: *
gp :: Printf t -> (String -> X ()) -> t
instance (PrintfArg a, LoggerType b) => LoggerType (a -> b) where
type Printf (a -> b) = a -> Printf b
gp g f a = gp (g a) f
instance (a ~ ()) => LoggerType (X a) where
type Printf (X a) = String
gp str fn = fn str
getLogLevel :: X LogLevel
getLogLevel = logLevel <$> XS.get
setLogLevel :: LogLevel -> X ()
setLogLevel ll = do
XS.put $ LoggerState ll
join $ asks (logHook . config)
logs :: (LoggerType r) => LogLevel -> String -> r
logs ll fmt = gp (printf fmt) $ \ss -> do
LoggerState ll' <- XS.get
io $
catch
( do
zoneTime <- getZonedTime
when (ll >= ll') $
forM_ (lines ss) $ \s ->
putStrLn (printf "[%s %s] - %s" (take 23 $ show zoneTime) (show ll) s)
)
(\error -> putStrLn $ "Error: " ++ show (error :: SomeException))
|
