git-annex/Command/LookupKey.hs
Joey Hess 89b2542d3c
annex.skipunknown with transition plan
Added annex.skipunknown git config, that can be set to false to change the
behavior of commands like `git annex get foo*`, to not skip over files/dirs
that are not checked into git and are explicitly listed in the command
line.

Significant complexity was needed to handle git-annex add, which uses some
git ls-files calls, but needs to not use --error-unmatch because of course
the files are not known to git.

annex.skipunknown is planned to change to default to false in a
git-annex release in early 2022. There's a todo for that.
2020-05-28 15:55:17 -04:00

40 lines
1.1 KiB
Haskell

{- git-annex command
-
- Copyright 2013-2017 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Command.LookupKey where
import Command
import Annex.CatFile
import qualified Git.LsFiles
cmd :: Command
cmd = notBareRepo $ noCommit $ noMessages $
command "lookupkey" SectionPlumbing
"looks up key used for file"
(paramRepeating paramFile)
(batchable run (pure ()))
run :: () -> String -> Annex Bool
run _ file = seekSingleGitFile file >>= \case
Nothing -> return False
Just file' -> catKeyFile file' >>= \case
Just k -> do
liftIO $ putStrLn $ serializeKey k
return True
Nothing -> return False
-- To support absolute filenames, pass through git ls-files.
-- But, this plumbing command does not recurse through directories.
seekSingleGitFile :: FilePath -> Annex (Maybe RawFilePath)
seekSingleGitFile file = do
(l, cleanup) <- inRepo (Git.LsFiles.inRepo [] [toRawFilePath file])
r <- case l of
(f:[]) | takeFileName (fromRawFilePath f) == takeFileName file ->
return (Just f)
_ -> return Nothing
void $ liftIO cleanup
return r