contentlocationn: New plumbing command.

Command/ContentLocation.hs

@@ -0,0 +1,32 @@
+{- git-annex command
+ -
+ - Copyright 2015 Joey Hess <id@joeyh.name>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Command.ContentLocation where
+
+import Common.Annex
+import Command
+import Annex.Content
+import Types.Key
+
+cmd :: [Command]
+cmd = [noCommit $ noMessages $
+	command "contentlocation" (paramRepeating paramKey) seek
+		SectionPlumbing "looks up content for a key"]
+
+seek :: CommandSeek
+seek = withKeys start
+
+start :: Key -> CommandStart
+start k = do
+	liftIO . maybe exitFailure putStrLn
+		=<< inAnnex' (pure True) Nothing check k
+	stop
+  where
+	check f = ifM (liftIO (doesFileExist f))
+		( return (Just f)
+		, return Nothing
+		)