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|
{- git-annex output messages
-
- Copyright 2010-2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Messages (
showStart,
showNote,
showAction,
showProgress,
metered,
MeterUpdate,
showSideAction,
doSideAction,
doQuietSideAction,
showStoringStateAction,
showOutput,
showLongNote,
showEndOk,
showEndFail,
showEndResult,
showErr,
warning,
indent,
maybeShowJSON,
showFullJSON,
showCustom,
showHeader,
showRaw,
setupConsole
) where
import Text.JSON
import Data.Progress.Meter
import Data.Progress.Tracker
import Data.Quantity
import Common
import Types
import Types.Messages
import Types.Key
import qualified Annex
import qualified Messages.JSON as JSON
showStart :: String -> String -> Annex ()
showStart command file = handle (JSON.start command $ Just file) $
flushed $ putStr $ command ++ " " ++ file ++ " "
showNote :: String -> Annex ()
showNote s = handle (JSON.note s) $
flushed $ putStr $ "(" ++ s ++ ") "
showAction :: String -> Annex ()
showAction s = showNote $ s ++ "..."
{- Progress dots. -}
showProgress :: Annex ()
showProgress = handle q $
flushed $ putStr "."
{- Shows a progress meter while performing a transfer of a key.
- The action is passed a callback to use to update the meter. -}
type MeterUpdate = Integer -> IO ()
metered :: Key -> (MeterUpdate -> Annex a) -> Annex a
metered key a = withOutputType $ go (keySize key)
where
go (Just size) NormalOutput = do
progress <- liftIO $ newProgress "" size
meter <- liftIO $ newMeter progress "B" 25 (renderNums binaryOpts 1)
showOutput
liftIO $ displayMeter stdout meter
r <- a $ \n -> liftIO $ do
incrP progress n
displayMeter stdout meter
liftIO $ clearMeter stdout meter
return r
go _ _ = a (const noop)
showSideAction :: String -> Annex ()
showSideAction m = Annex.getState Annex.output >>= go
where
go (MessageState v StartBlock) = do
p
Annex.changeState $ \s -> s { Annex.output = MessageState v InBlock }
go (MessageState _ InBlock) = return ()
go _ = p
p = handle q $ putStrLn $ "(" ++ m ++ "...)"
showStoringStateAction :: Annex ()
showStoringStateAction = showSideAction "Recording state in git"
{- Performs an action, supressing showSideAction messages. -}
doQuietSideAction :: Annex a -> Annex a
doQuietSideAction = doSideAction' InBlock
{- Performs an action, that may call showSideAction multiple times.
- Only the first will be displayed. -}
doSideAction :: Annex a -> Annex a
doSideAction = doSideAction' StartBlock
doSideAction' :: SideActionBlock -> Annex a -> Annex a
doSideAction' b a = do
o <- Annex.getState Annex.output
set $ o { sideActionBlock = b }
set o `after` a
where
set o = Annex.changeState $ \s -> s { Annex.output = o }
showOutput :: Annex ()
showOutput = handle q $
putStr "\n"
showLongNote :: String -> Annex ()
showLongNote s = handle (JSON.note s) $
putStrLn $ '\n' : indent s
showEndOk :: Annex ()
showEndOk = showEndResult True
showEndFail :: Annex ()
showEndFail = showEndResult False
showEndResult :: Bool -> Annex ()
showEndResult ok = handle (JSON.end ok) $ putStrLn msg
where
msg
| ok = "ok"
| otherwise = "failed"
showErr :: (Show a) => a -> Annex ()
showErr e = warning' $ "git-annex: " ++ show e
warning :: String -> Annex ()
warning = warning' . indent
warning' :: String -> Annex ()
warning' w = do
handle q $ putStr "\n"
liftIO $ do
hFlush stdout
hPutStrLn stderr w
indent :: String -> String
indent = join "\n" . map (\l -> " " ++ l) . lines
{- Shows a JSON fragment only when in json mode. -}
maybeShowJSON :: JSON a => [(String, a)] -> Annex ()
maybeShowJSON v = handle (JSON.add v) q
{- Shows a complete JSON value, only when in json mode. -}
showFullJSON :: JSON a => [(String, a)] -> Annex Bool
showFullJSON v = withOutputType $ liftIO . go
where
go JSONOutput = JSON.complete v >> return True
go _ = return False
{- Performs an action that outputs nonstandard/customized output, and
- in JSON mode wraps its output in JSON.start and JSON.end, so it's
- a complete JSON document.
- This is only needed when showStart and showEndOk is not used. -}
showCustom :: String -> Annex Bool -> Annex ()
showCustom command a = do
handle (JSON.start command Nothing) q
r <- a
handle (JSON.end r) q
showHeader :: String -> Annex ()
showHeader h = handle q $
flushed $ putStr $ h ++ ": "
showRaw :: String -> Annex ()
showRaw s = handle q $ putStrLn s
{- This avoids ghc's output layer crashing on invalid encoded characters in
- filenames when printing them out.
-}
setupConsole :: IO ()
setupConsole = do
fileEncoding stdout
fileEncoding stderr
handle :: IO () -> IO () -> Annex ()
handle json normal = withOutputType go
where
go NormalOutput = liftIO normal
go QuietOutput = q
go JSONOutput = liftIO $ flushed json
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
|
