rework git check-attr interface

Now gitattributes are looked up, efficiently, in only the places that
really need them, using the same approach used for cat-file.

The old CheckAttr code seemed very fragile, in the way it streamed files
through git check-attr.
I actually found that cad8824852
was still deadlocking with ghc 7.4, at the end of adding a lot of files.
This should fix that problem, and avoid future ones.

The best part is that this removes withAttrFilesInGit and withNumCopies,
which were complicated Seek methods, as well as simplfying the types
for several other Seek methods that had a Backend tupled in.
This commit is contained in:
Joey Hess 2012-02-13 23:42:44 -04:00
parent d35a8d85b5
commit cbaebf538a
16 changed files with 143 additions and 99 deletions

View file

@ -10,7 +10,6 @@ module Command.PreCommit where
import Command
import qualified Command.Add
import qualified Command.Fix
import Backend
def :: [Command]
def = [command "pre-commit" paramPaths seek "run by git pre-commit hook"]
@ -22,12 +21,12 @@ seek =
[ withFilesToBeCommitted $ whenAnnexed Command.Fix.start
, withFilesUnlockedToBeCommitted start]
start :: BackendFile -> CommandStart
start p = next $ perform p
start :: FilePath -> CommandStart
start file = next $ perform file
perform :: BackendFile -> CommandPerform
perform pair@(_, file) = do
ok <- doCommand $ Command.Add.start pair
perform :: FilePath -> CommandPerform
perform file = do
ok <- doCommand $ Command.Add.start file
if ok
then next $ return True
else error $ "failed to add " ++ file ++ "; canceling commit"