git-annex/Logs/Difference.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

42 lines
1.3 KiB
Haskell

{- git-annex difference log
-
- Copyright 2015 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Logs.Difference (
recordDifferences,
recordedDifferences,
recordedDifferencesFor,
module Logs.Difference.Pure
) where
import qualified Data.Map as M
import qualified Data.Attoparsec.ByteString as A
import Data.ByteString.Builder
import Annex.Common
import Types.Difference
import qualified Annex.Branch
import Logs
import Logs.UUIDBased
import Logs.Difference.Pure
recordDifferences :: Differences -> UUID -> Annex ()
recordDifferences ds@(Differences {}) uuid = do
c <- liftIO currentVectorClock
Annex.Branch.change differenceLog $
buildLogOld byteString
. changeLog c uuid (encodeBS $ showDifferences ds)
. parseLogOld A.takeByteString
recordDifferences UnknownDifferences _ = return ()
-- Map of UUIDs that have Differences recorded.
-- If a new version of git-annex has added a Difference this version
-- doesn't know about, it will contain UnknownDifferences.
recordedDifferences :: Annex (M.Map UUID Differences)
recordedDifferences = parseDifferencesLog <$> Annex.Branch.get differenceLog
recordedDifferencesFor :: UUID -> Annex Differences
recordedDifferencesFor u = fromMaybe mempty . M.lookup u <$> recordedDifferences