Add uninit subcommand. Closes: #605749

Command/Uninit.hs

@@ -0,0 +1,59 @@
+{- git-annex command
+ -
+ - Copyright 2010 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Command.Uninit where
+
+import Control.Monad.State (liftIO)
+import Control.Monad (when)
+import System.Directory
+
+import Command
+import Messages
+import Types
+import Utility
+import qualified GitRepo as Git
+import qualified Annex
+import qualified Command.Unannex
+import qualified Command.Init
+
+seek :: [SubCmdSeek]
+seek = [withAll withFilesInGit Command.Unannex.start, withNothing start]
+
+start :: SubCmdStartNothing
+start = do
+	showStart "uninit" ""
+	return $ Just $ perform
+
+perform :: SubCmdPerform
+perform = do
+	g <- Annex.gitRepo
+
+	gitPreCommitHookUnWrite g
+	liftIO $ gitAttributesUnWrite g
+
+	return $ Just $ return True
+
+gitPreCommitHookUnWrite :: Git.Repo -> Annex ()
+gitPreCommitHookUnWrite repo = do
+	let hook = Command.Init.preCommitHook repo
+	hookexists <- liftIO $ doesFileExist hook
+	when hookexists $ do
+		c <- liftIO $ readFile hook
+		if c == Command.Init.preCommitScript
+			then liftIO $ removeFile hook
+			else warning $ "pre-commit hook (" ++ hook ++ 
+				") contents modified; not deleting." ++
+				" Edit it to remove call to git annex."
+
+gitAttributesUnWrite :: Git.Repo -> IO ()
+gitAttributesUnWrite repo = do
+	let attributes = Git.attributes repo
+	attrexists <- doesFileExist attributes
+	when attrexists $ do
+		c <- readFileStrict attributes
+		writeFile attributes $ unlines $
+			filter (/= Command.Init.attrLine) $ lines c