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{- git-annex command
-
- Copyright 2013-2017 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL 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 $ key2file 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 FilePath)
seekSingleGitFile file = do
(l, cleanup) <- inRepo (Git.LsFiles.inRepo [file])
r <- case l of
(f:[]) | takeFileName f == takeFileName file -> return (Just f)
_ -> return Nothing
void $ liftIO cleanup
return r
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