59 lines
1.4 KiB
Haskell
59 lines
1.4 KiB
Haskell
{- git-annex "URL" backend
|
|
-
|
|
- Copyright 2010 Joey Hess <joey@kitenet.net>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
module Backend.URL (backends) where
|
|
|
|
import Control.Monad.State (liftIO)
|
|
import Data.String.Utils
|
|
|
|
import Types
|
|
import BackendClass
|
|
import Utility
|
|
import Messages
|
|
|
|
backends :: [Backend Annex]
|
|
backends = [backend]
|
|
|
|
backend :: Backend Annex
|
|
backend = Backend {
|
|
name = "URL",
|
|
getKey = keyValue,
|
|
storeFileKey = dummyStore,
|
|
retrieveKeyFile = downloadUrl,
|
|
-- allow keys to be removed; presumably they can always be
|
|
-- downloaded again
|
|
removeKey = dummyRemove,
|
|
-- similarly, keys are always assumed to be out there on the web
|
|
hasKey = dummyOk,
|
|
-- and nothing needed to fsck
|
|
fsckKey = dummyFsck
|
|
}
|
|
|
|
-- cannot generate url from filename
|
|
keyValue :: FilePath -> Annex (Maybe Key)
|
|
keyValue _ = return Nothing
|
|
|
|
-- cannot change url contents
|
|
dummyStore :: FilePath -> Key -> Annex Bool
|
|
dummyStore _ _ = return False
|
|
|
|
dummyRemove :: Key -> Maybe a -> Annex Bool
|
|
dummyRemove _ _ = return False
|
|
|
|
dummyFsck :: Key -> Maybe FilePath -> Maybe a -> Annex Bool
|
|
dummyFsck _ _ _ = return True
|
|
|
|
dummyOk :: Key -> Annex Bool
|
|
dummyOk _ = return True
|
|
|
|
downloadUrl :: Key -> FilePath -> Annex Bool
|
|
downloadUrl key file = do
|
|
showNote "downloading"
|
|
showProgress -- make way for curl progress bar
|
|
liftIO $ boolSystem "curl" [Params "-# -o", File file, File url]
|
|
where
|
|
url = join ":" $ drop 1 $ split ":" $ show key
|