broke subcommands out into separate modules

Command/Unannex.hs

@@ -0,0 +1,48 @@
+{- 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 System.Directory
+
+import Command
+import qualified Annex
+import Utility
+import Locations
+import qualified Backend
+import LocationLog
+import Types
+import Core
+import qualified GitRepo as Git
+
+{- The unannex subcommand undoes an add. -}
+start :: SubCmdStartString
+start file = isAnnexed file $ \(key, backend) -> do
+	showStart "unannex" file
+	return $ Just $ perform file key backend
+
+perform :: FilePath -> Key -> Backend -> SubCmdPerform
+perform file key backend = do
+	-- force backend to always remove
+	Annex.flagChange "force" $ FlagBool True
+	ok <- Backend.removeKey backend key
+	if (ok)
+		then return $ Just $ cleanup file key
+		else return Nothing
+
+cleanup :: FilePath -> Key -> SubCmdCleanup
+cleanup file key = do
+	logStatus key ValueMissing
+	g <- Annex.gitRepo
+	let src = annexLocation g key
+	liftIO $ removeFile file
+	liftIO $ Git.run g ["rm", "--quiet", file]
+	-- git rm deletes empty directories; put them back
+	liftIO $ createDirectoryIfMissing True (parentDir file)
+	liftIO $ renameFile src file
+	return True