git-annex/Command/Add.hs
2010-11-08 15:15:21 -04:00

53 lines
1.4 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Add where
import Control.Monad.State (liftIO)
import System.Posix.Files
import System.Directory
import Command
import qualified Annex
import Utility
import Locations
import qualified Backend
import LocationLog
import Types
import Core
import Messages
{- The add subcommand 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. -}
start :: SubCmdStartBackendFile
start pair@(file, _) = notAnnexed file $ do
s <- liftIO $ getSymbolicLinkStatus file
if ((isSymbolicLink s) || (not $ isRegularFile s))
then return Nothing
else do
showStart "add" file
return $ Just $ perform pair
perform :: (FilePath, Maybe Backend) -> SubCmdPerform
perform (file, backend) = do
stored <- Backend.storeFileKey file backend
case (stored) of
Nothing -> return Nothing
Just (key, _) -> return $ Just $ cleanup file key
cleanup :: FilePath -> Key -> SubCmdCleanup
cleanup file key = do
logStatus key ValuePresent
g <- Annex.gitRepo
let dest = annexLocation g key
liftIO $ createDirectoryIfMissing True (parentDir dest)
liftIO $ renameFile file dest
link <- calcGitLink file key
liftIO $ createSymbolicLink link file
Annex.queue "add" [] file
return True