git-annex/Command/Unlock.hs

48 lines
1.1 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Unlock where
import Control.Monad.State (liftIO)
import System.Directory hiding (copyFile)
import Command
import qualified Annex
import Types
import Messages
import Locations
import Core
import CopyFile
command :: [Command]
command =
[ Command "unlock" paramPath seek "unlock files for modification"
, Command "edit" paramPath seek "same as unlock"
]
seek :: [CommandSeek]
seek = [withFilesInGit start]
{- The unlock subcommand replaces the symlink with a copy of the file's
- content. -}
start :: CommandStartString
start file = isAnnexed file $ \(key, _) -> do
showStart "unlock" file
return $ Just $ perform file key
perform :: FilePath -> Key -> CommandPerform
perform dest key = do
g <- Annex.gitRepo
let src = annexLocation g key
liftIO $ removeFile dest
showNote "copying..."
ok <- liftIO $ copyFile src dest
if ok
then do
liftIO $ allowWrite dest
return $ Just $ return True
else error "copy failed!"