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{- git-annex output messages
-
- Copyright 2010-2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE CPP #-}
module Messages.Internal where
import Common
import Types
import Types.Messages
import qualified Annex
#ifdef WITH_CONCURRENTOUTPUT
import System.Console.Concurrent
#endif
outputMessage :: IO () -> String -> Annex ()
outputMessage json s = withOutputType go
where
go NormalOutput = liftIO $
flushed $ putStr s
go QuietOutput = q
go (ConcurrentOutput _) = liftIO $
#ifdef WITH_CONCURRENTOUTPUT
outputConcurrent s
#else
q
#endif
go JSONOutput = liftIO $ flushed json
outputError :: String -> Annex ()
outputError s = withOutputType go
where
go (ConcurrentOutput _) = liftIO $
#ifdef WITH_CONCURRENTOUTPUT
errorConcurrent s
#else
q
#endif
go _ = liftIO $ do
hFlush stdout
hPutStr stderr s
hFlush stderr
q :: Monad m => m ()
q = noop
flushed :: IO () -> IO ()
flushed a = a >> hFlush stdout
withOutputType :: (OutputType -> Annex a) -> Annex a
withOutputType a = outputType <$> Annex.getState Annex.output >>= a
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