git-annex/Backend/Url.hs
2010-10-14 13:17:43 -04:00

35 lines
837 B
Haskell

{- git-annex "url" backend
- -}
module Backend.Url (backend) where
import Control.Monad.State
import System.Cmd
import System.Exit
import BackendTypes
backend = Backend {
name = "url",
getKey = keyValue,
storeFileKey = dummyStore,
retrieveKeyFile = downloadUrl,
removeKey = dummyRemove
}
-- cannot generate url from filename
keyValue :: FilePath -> Annex (Maybe Key)
keyValue file = return Nothing
-- cannot change url contents
dummyStore :: FilePath -> Key -> Annex Bool
dummyStore file url = return False
dummyRemove :: Key -> Annex Bool
dummyRemove url = return False
downloadUrl :: Key -> FilePath -> Annex Bool
downloadUrl url file = do
liftIO $ putStrLn $ "download: " ++ (show url)
result <- liftIO $ rawSystem "curl" ["-#", "-o", file, (show url)]
if (result == ExitSuccess)
then return True
else return False