git-annex/Git/Objects.hs
Joey Hess 40ecf58d4b
update licenses from GPL to AGPL
This does not change the overall license of the git-annex program, which
was already AGPL due to a number of sources files being AGPL already.

Legally speaking, I'm adding a new license under which these files are
now available; I already released their current contents under the GPL
license. Now they're dual licensed GPL and AGPL. However, I intend
for all my future changes to these files to only be released under the
AGPL license, and I won't be tracking the dual licensing status, so I'm
simply changing the license statement to say it's AGPL.

(In some cases, others wrote parts of the code of a file and released it
under the GPL; but in all cases I have contributed a significant portion
of the code in each file and it's that code that is getting the AGPL
license; the GPL license of other contributors allows combining with
AGPL code.)
2019-03-13 15:48:14 -04:00

49 lines
1.4 KiB
Haskell

{- .git/objects
-
- Copyright 2013 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL 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
]