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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.Drop where
import Control.Monad (when)
import Command
import qualified Backend
import LocationLog
import Types
import Core
import Messages
import Utility
command :: [Command]
command = [Command "drop" paramPath seek
"indicate content of files not currently wanted"]
seek :: [CommandSeek]
seek = [withAttrFilesInGit "annex.numcopies" start]
{- Indicates a file's content is not wanted anymore, and should be removed
- if it's safe to do so. -}
start :: CommandStartAttrFile
start (file, attr) = isAnnexed file $ \(key, backend) -> do
inbackend <- Backend.hasKey key
if not inbackend
then return Nothing
else do
showStart "drop" file
return $ Just $ perform key backend numcopies
where
numcopies = readMaybe attr :: Maybe Int
perform :: Key -> Backend -> Maybe Int -> CommandPerform
perform key backend numcopies = do
success <- Backend.removeKey backend key numcopies
if success
then return $ Just $ cleanup key
else return Nothing
cleanup :: Key -> CommandCleanup
cleanup key = do
inannex <- inAnnex key
when inannex $ removeAnnex key
logStatus key ValueMissing
return True
|
