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{- git-annex
-}
module Annex where
import Backend
import System.Posix.Files
import System.Directory
import GitRepo
import Utility
{- An annexed file's content is stored in .git/annex/. -}
annexedFileLocation repo file = do
dir <- gitDir repo
return $ dir ++ "/annex/" ++ (gitRelative repo file)
{- Annexes a file, storing it in a backend, and then moving it into
- the annex directory and setting up the symlink pointing to its
- content. -}
annexFile :: [Backend] -> GitRepo -> FilePath -> IO ()
annexFile backends repo file = do
alreadyannexed <- lookupBackend backends repo file
case (alreadyannexed) of
Just _ -> error $ "already annexed " ++ file
Nothing -> do
stored <- storeFile backends repo file
if (not stored)
then error $ "no backend could store " ++ file
else symlink
where
symlink = do
dest <- annexedFileLocation repo file
createDirectoryIfMissing True (parentDir dest)
renameFile file dest
createSymbolicLink dest file
gitAdd repo file
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