{- .: Sample usage :. :------------: You can run this README with: `runhaskell README` -} -- 0) import stylized module import System.Console.ANSI.Stylized -- 1) a data type to 'tag' messages: data MsgType = Info | Warning | Error deriving (Enum) -- 2) a function from tags to styles: stylemap :: MsgType -> Style stylemap Info = ((Dull, Green), (NormalIntensity, NoUnderline)) stylemap Warning = ((Dull, Yellow), (NormalIntensity, NoUnderline)) stylemap Error = ((Dull, Red), (NormalIntensity, NoUnderline)) -- 3) a logging function built from 'T' ending functions (i.e. putLnT and putT) myLogLn msg = putLnT stylemap msg >> resetGR myLog msg = putT stylemap msg >> resetGR -- 4) some example messages: msgs1 = [ (Info, "Info Message\n"), (Warning, "Warning Message\n"), (Error, "Error Message") ] msgs2 = zip (cycle $ enumFrom Info) ["some ", "random ", "messages "] -- 5) print: main = do myLog msgs2 myLogLn msgs2 myLogLn msgs1 -- 6) you can always use S-ending functions ('curried' or 'uncurried' ones) putStrLnS ((Dull, Blue), (NormalIntensity, SingleUnderline)) "blue underlined" putLnS [ (((Vivid, Yellow), (NormalIntensity, NoUnderline)), "vivid yellow ") , (((Vivid, Blue), (NormalIntensity, NoUnderline)), "vivid blue") ] -- 7) Remember to reset (if you want to)! resetGR