67 lines
1.8 KiB
Haskell
67 lines
1.8 KiB
Haskell
{- git-annex output messages, including concurrent output to display regions
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-
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- Copyright 2010-2016 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Messages.Internal where
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import Common
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import Annex
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import Types.Messages
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import Messages.Concurrent
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withMessageState :: (MessageState -> Annex a) -> Annex a
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withMessageState a = Annex.getState Annex.output >>= a
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outputMessage :: IO () -> String -> Annex ()
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outputMessage = outputMessage' False
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outputMessageFinal :: IO () -> String -> Annex ()
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outputMessageFinal = outputMessage' True
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outputMessage' :: Bool -> IO () -> String -> Annex ()
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outputMessage' endmessage json msg = withMessageState $ \s -> case outputType s of
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NormalOutput
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| concurrentOutputEnabled s -> concurrentMessage s False msg q
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| otherwise -> liftIO $ flushed $ putStr msg
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JSONOutput -> void $ outputJSON json endmessage s
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QuietOutput -> q
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outputJSON :: IO () -> Bool -> MessageState -> Annex Bool
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outputJSON json endmessage s = case outputType s of
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JSONOutput
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| concurrentOutputEnabled s -> do
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-- Buffer json fragments until end is reached.
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if endmessage
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then do
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Annex.changeState $ \st ->
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st { Annex.output = s { jsonBuffer = [] } }
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liftIO $ flushed $ do
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sequence_ $ reverse $ jsonBuffer s
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json
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else Annex.changeState $ \st ->
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st { Annex.output = s { jsonBuffer = json : jsonBuffer s } }
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return True
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| otherwise -> do
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liftIO $ flushed json
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return True
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_ -> return False
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outputError :: String -> Annex ()
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outputError msg = withMessageState $ \s ->
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if concurrentOutputEnabled s
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then concurrentMessage s True msg go
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else go
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where
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go = liftIO $ do
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hFlush stdout
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hPutStr stderr msg
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hFlush stderr
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q :: Monad m => m ()
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q = noop
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flushed :: IO () -> IO ()
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flushed a = a >> hFlush stdout
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