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{- git-annex "file" backend
- -}
module BackendFile (backend) where
import BackendType
import GitRepo
backend = Backend {
name = "file",
getKey = keyValue,
storeFileKey = dummyStore,
retrieveKeyFile = copyFromOtherRepo,
removeKey = dummyRemove
}
-- direct mapping from filename to key
keyValue :: GitRepo -> FilePath -> IO (Maybe Key)
keyValue repo file = return $ Just file
{- This backend does not really do any independant data storage,
- it relies on the file contents in .git/annex/ in this repo,
- and other accessible repos. So storing or removing a key is
- a no-op. -}
dummyStore :: GitRepo -> FilePath -> Key -> IO (Bool)
dummyStore repo file key = return True
dummyRemove :: Key -> IO Bool
dummyRemove url = return False
{- Try to find a copy of the file in one of the other repos,
- and copy it over to this one. -}
copyFromOtherRepo :: Key -> FilePath -> IO (Bool)
copyFromOtherRepo key file = error "copyFromOtherRepo unimplemented" -- TODO
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