git-annex/Messages/Internal.hs
Joey Hess 0f18636c8a
Work around problem with concurrent-output when in a non-unicode locale by avoiding use of it in such a locale.
Instead -J will behave as if it was built without concurrent-output support
in this situation. Ie, it will be mostly quiet, except when there's an
error.

Note that it's not a problem for a filename to contain invalid utf-8 when
in a utf-8 locale. That is handled ok by concurrent-output. It's only
displaying unicode characters in a non-unicode locale that doesn't work.
2016-02-14 15:02:42 -04:00

40 lines
993 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 o@(ConcurrentOutput {}) = concurrentMessage o False s q
go JSONOutput = liftIO $ flushed json
outputError :: String -> Annex ()
outputError s = withOutputType go
where
go o@(ConcurrentOutput {}) = concurrentMessage o 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