114 lines
3.5 KiB
Haskell
114 lines
3.5 KiB
Haskell
{- git-annex command
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-
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- Copyright 2010 Joey Hess <id@joeyh.name>
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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 qualified 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 Command.Unannex
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import qualified Annex.Branch
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import Annex.Content
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import Annex.Init
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import Utility.FileMode
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import System.IO.HVFS
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import System.IO.HVFS.Utils
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cmd :: Command
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cmd = addCheck check $
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command "uninit" SectionUtility
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"de-initialize git-annex and clean out repository"
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paramPaths (withParams seek)
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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 " ++ Git.fromRef b ++ " branch is checked out"
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top <- fromRepo Git.repoPath
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currdir <- liftIO getCurrentDirectory
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whenM ((/=) <$> liftIO (absPath top) <*> liftIO (absPath currdir)) $
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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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[Param "rev-parse", Param "--abbrev-ref", Param "HEAD"]
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seek :: CmdParams -> CommandSeek
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seek ps = do
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withFilesNotInGit False (whenAnnexed startCheckIncomplete) ps
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Annex.changeState $ \s -> s { Annex.fast = True }
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withFilesInGit (whenAnnexed Command.Unannex.start) ps
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finish
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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 -> 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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finish :: Annex ()
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finish = do
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annexdir <- fromRepo gitAnnexDir
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annexobjectdir <- fromRepo gitAnnexObjectDir
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leftovers <- removeUnannexed =<< getKeysPresent InAnnex
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liftIO $ prepareRemoveAnnexDir annexdir
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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 $ Git.fromRef Annex.Branch.name]
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liftIO exitSuccess
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{- Turn on write bits in all remaining files in the annex directory, in
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- preparation for removal. -}
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prepareRemoveAnnexDir :: FilePath -> IO ()
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prepareRemoveAnnexDir annexdir =
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recurseDir SystemFS annexdir >>= mapM_ (void . tryIO . allowWrite)
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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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lockContent k removeAnnex
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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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