group, ungroup: New commands to indicate groups of repositories.

Command/Group.hs

@@ -0,0 +1,35 @@
+{- git-annex command
+ -
+ - Copyright 2012 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Command.Group where
+
+import Common.Annex
+import Command
+import qualified Remote
+import Logs.Group
+import Types.Group
+
+import qualified Data.Set as S
+
+def :: [Command]
+def = [command "group" (paramPair paramRemote paramDesc) seek "add a repository to a group"]
+
+seek :: [CommandSeek]
+seek = [withWords start]
+
+start :: [String] -> CommandStart
+start (name:g:[]) = do
+	showStart "group" name
+	u <- Remote.nameToUUID name
+	next $ perform u g
+start _ = error "Specify a repository and a group."
+
+perform :: UUID -> Group -> CommandPerform
+perform uuid g = do
+	s <- lookupGroups uuid
+	groupSet uuid (S.insert g s) 
+	next $ return True