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{- git-annex repository versioning
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Version where
import Control.Monad.State (liftIO)
import System.Directory
import Types
import qualified Annex
import qualified GitRepo as Git
import Locations
currentVersion :: String
currentVersion = "1"
versionField :: String
versionField = "annex.version"
getVersion :: Annex (Maybe String)
getVersion = do
g <- Annex.gitRepo
let v = Git.configGet g versionField ""
if not $ null v
then return $ Just v
else do
-- version 0 was not recorded in .git/config;
-- such a repo should have an gitAnnexDir but no
-- gitAnnexObjectDir
d <- liftIO $ doesDirectoryExist $ gitAnnexDir g
o <- liftIO $ doesDirectoryExist $ gitAnnexObjectDir g
if d && not o
then return $ Just "0"
else return Nothing -- no version yet
setVersion :: Annex ()
setVersion = Annex.setConfig versionField currentVersion
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