f353f13c9d
In direct mode, it's best to whenever possible not move direct mode files out of the way, and so I made unannex avoid touching the direct mode file at all. That actually turns out to be easy, because in direct mode, unlike indirect mode, the pre-commit hook won't get confused if the unannexed file later gets added back by git add. So there's no need to commit the unannex right away; it can be staged for the user to commit later. This also means that unannex in direct mode is a lot faster than in indirect mode! Another subtle bit is the bookkeeping that is done when unannexing a direct mode file. The inode cache needs to be removed so that when uninit runs getKeysPresent, it doesn't see the cache and think the key is still present and crash when it's not. This commit is sponsored by Douglas Butts. Thanks!
109 lines
3.4 KiB
Haskell
109 lines
3.4 KiB
Haskell
{- git-annex command
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-
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- Copyright 2010 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Command.Uninit where
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import Common.Annex
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import Command
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import qualified Git
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import qualified Git.Command
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import qualified Annex
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import qualified Command.Unannex
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import Init
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import qualified Annex.Branch
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import Annex.Content
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def :: [Command]
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def = [addCheck check $ command "uninit" paramPaths seek
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SectionUtility "de-initialize git-annex and clean out repository"]
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check :: Annex ()
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check = do
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b <- current_branch
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when (b == Annex.Branch.name) $ error $
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"cannot uninit when the " ++ show b ++ " branch is checked out"
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top <- fromRepo Git.repoPath
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cwd <- liftIO getCurrentDirectory
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whenM ((/=) <$> liftIO (absPath top) <*> liftIO (absPath cwd)) $
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error "can only run uninit from the top of the git repository"
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where
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current_branch = Git.Ref . Prelude.head . lines <$> revhead
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revhead = inRepo $ Git.Command.pipeReadStrict
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[Params "rev-parse --abbrev-ref HEAD"]
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seek :: [CommandSeek]
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seek =
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[ withFilesNotInGit $ whenAnnexed startCheckIncomplete
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, withFilesInGit $ whenAnnexed startUnannex
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, withNothing start
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]
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{- git annex symlinks that are not checked into git could be left by an
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- interrupted add. -}
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startCheckIncomplete :: FilePath -> (Key, Backend) -> CommandStart
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startCheckIncomplete file _ = error $ unlines
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[ file ++ " points to annexed content, but is not checked into git."
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, "Perhaps this was left behind by an interrupted git annex add?"
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, "Not continuing with uninit; either delete or git annex add the file and retry."
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]
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startUnannex :: FilePath -> (Key, Backend) -> CommandStart
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startUnannex file info = do
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-- Force fast mode before running unannex. This way, if multiple
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-- files link to a key, it will be left in the annex and hardlinked
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-- to by each.
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Annex.changeState $ \s -> s { Annex.fast = True }
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Command.Unannex.start file info
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start :: CommandStart
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start = next $ next $ do
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annexdir <- fromRepo gitAnnexDir
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annexobjectdir <- fromRepo gitAnnexObjectDir
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leftovers <- removeUnannexed =<< getKeysPresent
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if null leftovers
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then liftIO $ removeDirectoryRecursive annexdir
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else error $ unlines
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[ "Not fully uninitialized"
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, "Some annexed data is still left in " ++ annexobjectdir
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, "This may include deleted files, or old versions of modified files."
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, ""
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, "If you don't care about preserving the data, just delete the"
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, "directory."
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, ""
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, "Or, you can move it to another location, in case it turns out"
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, "something in there is important."
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, ""
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, "Or, you can run `git annex unused` followed by `git annex dropunused`"
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, "to remove data that is not used by any tag or branch, which might"
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, "take care of all the data."
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, ""
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, "Then run `git annex uninit` again to finish."
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]
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uninitialize
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-- avoid normal shutdown
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saveState False
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inRepo $ Git.Command.run
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[Param "branch", Param "-D", Param $ show Annex.Branch.name]
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liftIO exitSuccess
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{- Keys that were moved out of the annex have a hard link still in the
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- annex, with > 1 link count, and those can be removed.
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-
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- Returns keys that cannot be removed. -}
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removeUnannexed :: [Key] -> Annex [Key]
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removeUnannexed = go []
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where
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go c [] = return c
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go c (k:ks) = ifM (inAnnexCheck k $ liftIO . enoughlinks)
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( do
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removeAnnex k
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go c ks
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, go (k:c) ks
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)
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enoughlinks f = catchBoolIO $ do
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s <- getFileStatus f
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return $ linkCount s > 1
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