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{- git-annex output messages, including concurrent output to display regions
-
- Copyright 2010-2016 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
import Messages.JSON
withMessageState :: (MessageState -> Annex a) -> Annex a
withMessageState a = Annex.getState Annex.output >>= a
outputMessage :: JSONBuilder -> String -> Annex ()
outputMessage jsonbuilder msg = withMessageState $ \s -> case outputType s of
NormalOutput
| concurrentOutputEnabled s -> concurrentMessage s False msg q
| otherwise -> liftIO $ flushed $ putStr msg
JSONOutput _ -> void $ outputJSON jsonbuilder s
QuietOutput -> q
-- Buffer changes to JSON until end is reached and then emit it.
outputJSON :: JSONBuilder -> MessageState -> Annex Bool
outputJSON jsonbuilder s = case outputType s of
JSONOutput _
| endjson -> do
Annex.changeState $ \st ->
st { Annex.output = s { jsonBuffer = Nothing } }
maybe noop (liftIO . flushed . emit) json
return True
| otherwise -> do
Annex.changeState $ \st ->
st { Annex.output = s { jsonBuffer = json } }
return True
_ -> return False
where
(json, endjson) = case jsonbuilder i of
Nothing -> (jsonBuffer s, False)
(Just (j, e)) -> (Just j, e)
i = case jsonBuffer s of
Nothing -> Nothing
Just b -> Just (b, False)
outputError :: String -> Annex ()
outputError msg = withMessageState $ \s ->
if concurrentOutputEnabled s
then concurrentMessage s True msg go
else go
where
go = liftIO $ do
hFlush stdout
hPutStr stderr msg
hFlush stderr
q :: Monad m => m ()
q = noop
flushed :: IO () -> IO ()
flushed a = a >> hFlush stdout
|
