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|
{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.SetKey where
import Control.Monad.State (liftIO)
import Control.Monad (when)
import Command
import qualified Annex
import Utility
import qualified Backend
import LocationLog
import Types
import Core
import Messages
command :: [Command]
command = [Command "setkey" (paramRepeating paramKey) seek
"sets annexed content for a key using a temp file"]
seek :: [CommandSeek]
seek = [withTempFile start]
{- Sets cached content for a key. -}
start :: CommandStartString
start file = do
keyname <- Annex.flagGet "key"
when (null keyname) $ error "please specify the key with --key"
backends <- Backend.list
let key = genKey (head backends) keyname
showStart "setkey" file
return $ Just $ perform file key
perform :: FilePath -> Key -> CommandPerform
perform file key = do
-- the file might be on a different filesystem, so mv is used
-- rather than simply calling moveToObjectDir key file
ok <- getViaTmp key $ \dest -> do
if dest /= file
then liftIO $ boolSystem "mv" [file, dest]
else return True
if ok
then return $ Just $ cleanup key
else error "mv failed!"
cleanup :: Key -> CommandCleanup
cleanup key = do
logStatus key ValuePresent
return True
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