git-annex/Git/Objects.hs
Joey Hess b874f84086 New annex.hardlink setting. Closes: #758593
* New annex.hardlink setting. Closes: #758593
* init: Automatically detect when a repository was cloned with --shared,
  and set annex.hardlink=true, as well as marking the repository as
  untrusted.

Had to reorganize Logs.Trust a bit to avoid a cycle between it and
Annex.Init.
2014-09-05 13:44:09 -04:00

49 lines
1.4 KiB
Haskell

{- .git/objects
-
- Copyright 2013 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Git.Objects where
import Common
import Git
import Git.Sha
objectsDir :: Repo -> FilePath
objectsDir r = localGitDir r </> "objects"
packDir :: Repo -> FilePath
packDir r = objectsDir r </> "pack"
packIdxFile :: FilePath -> FilePath
packIdxFile = flip replaceExtension "idx"
listPackFiles :: Repo -> IO [FilePath]
listPackFiles r = filter (".pack" `isSuffixOf`)
<$> catchDefaultIO [] (dirContents $ packDir r)
listLooseObjectShas :: Repo -> IO [Sha]
listLooseObjectShas r = catchDefaultIO [] $
mapMaybe (extractSha . concat . reverse . take 2 . reverse . splitDirectories)
<$> dirContentsRecursiveSkipping (== "pack") True (objectsDir r)
looseObjectFile :: Repo -> Sha -> FilePath
looseObjectFile r sha = objectsDir r </> prefix </> rest
where
(prefix, rest) = splitAt 2 (fromRef sha)
listAlternates :: Repo -> IO [FilePath]
listAlternates r = catchDefaultIO [] (lines <$> readFile alternatesfile)
where
alternatesfile = objectsDir r </> "info" </> "alternates"
{- A repository recently cloned with --shared will have one or more
- alternates listed, and contain no loose objects or packs. -}
isSharedClone :: Repo -> IO Bool
isSharedClone r = allM id
[ not . null <$> listAlternates r
, null <$> listLooseObjectShas r
, null <$> listPackFiles r
]