let url claims optionally include a suggested filename

Annex/URLClaim.hs

@@ -0,0 +1,29 @@
+{- Url claim checking.
+ -
+ - Copyright 2013-2014 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Annex.URLClaim (
+	URLClaim(..),
+	urlClaim
+) where
+
+import Common.Annex
+import Types.URLClaim
+import Logs.Web
+import Remote
+import qualified Types.Remote as Remote
+
+urlClaim :: URLString -> Annex (Remote, URLClaim)
+urlClaim url = do
+	rs <- remoteList
+	-- The web special remote claims urls by default.
+	let web = Prelude.head $ filter (\r -> uuid r == webUUID) rs
+	fromMaybe (web, URLClaimed) <$> getM (\r -> ret r <$> checkclaim r) rs
+  where
+	checkclaim = maybe (pure Nothing) (flip id url) . Remote.claimUrl
+
+	ret _ Nothing = Nothing
+	ret r (Just c) = Just (r, c)