git-annex/Messages/Internal.hs
Joey Hess ab6b1edfee
join back threads before ending concurrent output so display works
I didn't really want to put allowConcurrentOutput in CmdLine.Action,
but there were dep loops and that was the best place available.
2015-11-05 17:23:26 -04:00

40 lines
983 B
Haskell

{- git-annex output messages, including concurrent output to display regions
-
- Copyright 2010-2015 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Messages.Internal where
import Common
import Annex
import Types.Messages
import Messages.Concurrent
withOutputType :: (OutputType -> Annex a) -> Annex a
withOutputType a = outputType <$> Annex.getState Annex.output >>= a
outputMessage :: IO () -> String -> Annex ()
outputMessage json s = withOutputType go
where
go NormalOutput = liftIO $
flushed $ putStr s
go QuietOutput = q
go (ConcurrentOutput _) = concurrentMessage False s q
go JSONOutput = liftIO $ flushed json
outputError :: String -> Annex ()
outputError s = withOutputType go
where
go (ConcurrentOutput _) = concurrentMessage True s (go NormalOutput)
go _ = liftIO $ do
hFlush stdout
hPutStr stderr s
hFlush stderr
q :: Monad m => m ()
q = noop
flushed :: IO () -> IO ()
flushed a = a >> hFlush stdout