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{- git-annex assistant change tracking
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Assistant.Types.Changes where
import Types.KeySource
import Types.Key
import Utility.TSet
import Data.Time.Clock
import Control.Concurrent.STM
data ChangeInfo = AddChange Key | LinkChange (Maybe Key) | RmChange | RmDirChange
deriving (Show, Eq)
changeInfoKey :: ChangeInfo -> Maybe Key
changeInfoKey (AddChange k) = Just k
changeInfoKey (LinkChange (Just k)) = Just k
changeInfoKey _ = Nothing
type ChangeChan = TSet Change
data Change
= Change
{ changeTime :: UTCTime
, changeFile :: FilePath
, changeInfo :: ChangeInfo
}
| PendingAddChange
{ changeTime ::UTCTime
, changeFile :: FilePath
}
| InProcessAddChange
{ changeTime ::UTCTime
, keySource :: KeySource
}
deriving (Show)
newChangeChan :: IO ChangeChan
newChangeChan = atomically newTSet
isPendingAddChange :: Change -> Bool
isPendingAddChange (PendingAddChange {}) = True
isPendingAddChange _ = False
isInProcessAddChange :: Change -> Bool
isInProcessAddChange (InProcessAddChange {}) = True
isInProcessAddChange _ = False
finishedChange :: Change -> Key -> Change
finishedChange c@(InProcessAddChange { keySource = ks }) k = Change
{ changeTime = changeTime c
, changeFile = keyFilename ks
, changeInfo = AddChange k
}
finishedChange c _ = c
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