git-annex/BackendChecksum.hs
2010-10-12 16:10:15 -04:00

18 lines
424 B
Haskell

{- git-annex "checksum" backend
- -}
module BackendChecksum (backend) where
import qualified BackendFile
import Data.Digest.Pure.SHA
import Types
-- based on BackendFile just with a different key type
backend = BackendFile.backend {
name = "checksum",
getKey = keyValue
}
-- checksum the file to get its key
keyValue :: State -> FilePath -> IO (Maybe Key)
keyValue k = error "checksum keyValue unimplemented" -- TODO