git-annex/Types/Messages.hs
Joey Hess a108235565
better locking for json with -J
Avoid threads emitting json at the same time and scrambling, which was
still possible even with the buffering, just less likely.

Converted json IO actions to JSONChunk data too.
2016-09-09 15:51:34 -04:00

49 lines
1.1 KiB
Haskell

{- git-annex Messages data types
-
- Copyright 2012 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE CPP #-}
module Types.Messages where
import Data.Default
import qualified Data.ByteString.Lazy as B
#ifdef WITH_CONCURRENTOUTPUT
import System.Console.Regions (ConsoleRegion)
#endif
data OutputType = NormalOutput | QuietOutput | JSONOutput Bool
deriving (Show)
data SideActionBlock = NoBlock | StartBlock | InBlock
deriving (Eq)
data MessageState = MessageState
{ outputType :: OutputType
, concurrentOutputEnabled :: Bool
, sideActionBlock :: SideActionBlock
, implicitMessages :: Bool
#ifdef WITH_CONCURRENTOUTPUT
, consoleRegion :: Maybe ConsoleRegion
, consoleRegionErrFlag :: Bool
#endif
, jsonBuffer :: B.ByteString
}
instance Default MessageState
where
def = MessageState
{ outputType = NormalOutput
, concurrentOutputEnabled = False
, sideActionBlock = NoBlock
, implicitMessages = True
#ifdef WITH_CONCURRENTOUTPUT
, consoleRegion = Nothing
, consoleRegionErrFlag = False
#endif
, jsonBuffer = B.empty
}