git-annex/Command/Uninit.hs
Joey Hess f67b54e5e3 make a pipeReadStrict, that properly waits on the process
Nearly everything that's reading from git is operating on a small
amount of output and has been switched to use that. Only pipeNullSplit
stuff continues using the lazy version that yields zombies.
2012-10-04 18:04:09 -04:00

65 lines
1.8 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Uninit where
import Common.Annex
import Command
import qualified Git
import qualified Git.Command
import qualified Annex
import qualified Command.Unannex
import Init
import qualified Annex.Branch
import Annex.Content
def :: [Command]
def = [addCheck check $ command "uninit" paramPaths seek
"de-initialize git-annex and clean out repository"]
check :: Annex ()
check = do
b <- current_branch
when (b == Annex.Branch.name) $ error $
"cannot uninit when the " ++ show b ++ " branch is checked out"
top <- fromRepo Git.repoPath
cwd <- liftIO getCurrentDirectory
whenM ((/=) <$> liftIO (absPath top) <*> liftIO (absPath cwd)) $
error "can only run uninit from the top of the git repository"
where
current_branch = Git.Ref . Prelude.head . lines <$> revhead
revhead = inRepo $ Git.Command.pipeReadStrict
[Params "rev-parse --abbrev-ref HEAD"]
seek :: [CommandSeek]
seek = [withFilesInGit $ whenAnnexed startUnannex, withNothing start]
startUnannex :: FilePath -> (Key, Backend) -> CommandStart
startUnannex file info = do
-- Force fast mode before running unannex. This way, if multiple
-- files link to a key, it will be left in the annex and hardlinked
-- to by each.
Annex.changeState $ \s -> s { Annex.fast = True }
Command.Unannex.start file info
start :: CommandStart
start = next perform
perform :: CommandPerform
perform = next cleanup
cleanup :: CommandCleanup
cleanup = do
annexdir <- fromRepo gitAnnexDir
uninitialize
mapM_ removeAnnex =<< getKeysPresent
liftIO $ removeDirectoryRecursive annexdir
-- avoid normal shutdown
saveState False
inRepo $ Git.Command.run "branch"
[Param "-D", Param $ show Annex.Branch.name]
liftIO exitSuccess