git-annex/Remote/Helper/Git.hs

48 lines
1.4 KiB
Haskell

{- Utilities for git remotes.
-
- Copyright 2011-2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Remote.Helper.Git where
import Annex.Common
import qualified Git
import Types.Availability
import qualified Types.Remote as Remote
import Data.Time.Clock.POSIX
repoCheap :: Git.Repo -> Bool
repoCheap = not . Git.repoIsUrl
localpathCalc :: Git.Repo -> Maybe FilePath
localpathCalc r
| availabilityCalc r == GloballyAvailable = Nothing
| otherwise = Just $ Git.repoPath r
availabilityCalc :: Git.Repo -> Availability
availabilityCalc r
| (Git.repoIsLocal r || Git.repoIsLocalUnknown r) = LocallyAvailable
| otherwise = GloballyAvailable
{- Avoids performing an action on a local repository that's not usable.
- Does not check that the repository is still available on disk. -}
guardUsable :: Git.Repo -> Annex a -> Annex a -> Annex a
guardUsable r fallback a
| Git.repoIsLocalUnknown r = fallback
| otherwise = a
gitRepoInfo :: Remote -> Annex [(String, String)]
gitRepoInfo r = do
d <- fromRepo Git.localGitDir
mtimes <- liftIO $ mapM (modificationTime <$$> getFileStatus)
=<< dirContentsRecursive (d </> "refs" </> "remotes" </> Remote.name r)
let lastsynctime = case mtimes of
[] -> "never"
_ -> show $ posixSecondsToUTCTime $ realToFrac $ maximum mtimes
return
[ ("repository location", Git.repoLocation (Remote.repo r))
, ("last synced", lastsynctime)
]