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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.Unannex where
import Control.Monad.State (liftIO)
import Control.Monad (unless)
import System.Directory
import Command
import qualified Annex
import Utility
import qualified Backend
import LocationLog
import Types
import Content
import qualified GitRepo as Git
import Messages
command :: [Command]
command = [Command "unannex" paramPath seek "undo accidential add command"]
seek :: [CommandSeek]
seek = [withFilesInGit start]
{- The unannex subcommand undoes an add. -}
start :: CommandStartString
start file = isAnnexed file $ \(key, backend) -> do
ishere <- inAnnex key
if ishere
then do
g <- Annex.gitRepo
staged <- liftIO $ Git.stagedFiles g [Git.workTree g]
unless (null staged) $
error "This command cannot be run when there are already files staged for commit."
showStart "unannex" file
return $ Just $ perform file key backend
else return Nothing
perform :: FilePath -> Key -> Backend Annex -> CommandPerform
perform file key backend = do
-- force backend to always remove
ok <- Backend.removeKey backend key (Just 0)
if ok
then return $ Just $ cleanup file key
else return Nothing
cleanup :: FilePath -> Key -> CommandCleanup
cleanup file key = do
g <- Annex.gitRepo
liftIO $ removeFile file
liftIO $ Git.run g ["rm", "--quiet", "--", file]
-- git rm deletes empty directories; put them back
liftIO $ createDirectoryIfMissing True (parentDir file)
fromAnnex key file
logStatus key ValueMissing
-- Commit staged changes at end to avoid confusing the
-- pre-commit hook if this file is later added back to
-- git as a normal, non-annexed file.
Annex.queue "commit" ["-m", "content removed from git annex"] "--"
return True
|
