git-annex/Command/DropKey.hs
2010-11-11 18:54:52 -04:00

45 lines
960 B
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.DropKey where
import Command
import qualified Annex
import qualified Backend
import LocationLog
import Types
import Core
import Messages
seek :: [SubCmdSeek]
seek = [withKeys start]
{- Drops cached content for a key. -}
start :: SubCmdStartString
start keyname = do
backends <- Backend.list
let key = genKey (backends !! 0) keyname
present <- inAnnex key
force <- Annex.flagIsSet "force"
if (not present)
then return Nothing
else if (not force)
then error "dropkey is can cause data loss; use --force if you're sure you want to do this"
else do
showStart "dropkey" keyname
return $ Just $ perform key
perform :: Key -> SubCmdPerform
perform key = do
removeAnnex key
return $ Just $ cleanup key
cleanup :: Key -> SubCmdCleanup
cleanup key = do
logStatus key ValueMissing
return True