git-annex/Command/Get.hs
2010-11-02 19:04:24 -04:00

31 lines
703 B
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Get where
import Command
import qualified Backend
import Types
import Core
{- Gets an annexed file from one of the backends. -}
start :: SubCmdStartString
start file = isAnnexed file $ \(key, backend) -> do
inannex <- inAnnex key
if (inannex)
then return Nothing
else do
showStart "get" file
return $ Just $ perform key backend
perform :: Key -> Backend -> SubCmdPerform
perform key backend = do
ok <- getViaTmp key (Backend.retrieveKeyFile backend key)
if (ok)
then return $ Just $ return True -- no cleanup needed
else return Nothing