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