broke subcommands out into separate modules

Command/SetKey.hs

@@ -0,0 +1,43 @@
+{- git-annex command
+ -
+ - Copyright 2010 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Command.SetKey where
+
+import Control.Monad.State (liftIO)
+import Control.Monad (when)
+
+import Command
+import qualified Annex
+import Utility
+import Locations
+import qualified Backend
+import LocationLog
+import Types
+import Core
+
+{- Sets cached content for a key. -}
+start :: SubCmdStartString
+start tmpfile = do
+	keyname <- Annex.flagGet "key"
+	when (null keyname) $ error "please specify the key with --key"
+	backends <- Backend.list
+	let key = genKey (backends !! 0) keyname
+	showStart "setkey" tmpfile
+	return $ Just $ perform tmpfile key
+perform :: FilePath -> Key -> SubCmdPerform
+perform tmpfile key = do
+	g <- Annex.gitRepo
+	let loc = annexLocation g key
+	ok <- liftIO $ boolSystem "mv" [tmpfile, loc]
+	if (not ok)
+		then error "mv failed!"
+		else return $ Just $ cleanup key
+cleanup :: Key -> SubCmdCleanup
+cleanup key = do
+	logStatus key ValuePresent
+	return True
+