cfdfe4df6clookupkey: Support being given an absolute filename to a file within the current git repository. This commit was supported by the NSF-funded DataLad project.
39 lines
1 KiB
Haskell
39 lines
1 KiB
Haskell
{- git-annex command
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-
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- Copyright 2013-2017 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Command.LookupKey where
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import Command
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import Annex.CatFile
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import qualified Git.LsFiles
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cmd :: Command
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cmd = notBareRepo $ noCommit $ noMessages $
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command "lookupkey" SectionPlumbing
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"looks up key used for file"
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(paramRepeating paramFile)
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(batchable run (pure ()))
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run :: () -> String -> Annex Bool
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run _ file = seekSingleGitFile file >>= \case
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Nothing -> return False
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Just file' -> catKeyFile file' >>= \case
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Just k -> do
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liftIO $ putStrLn $ key2file k
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return True
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Nothing -> return False
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-- To support absolute filenames, pass through git ls-files.
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-- But, this plumbing command does not recurse through directories.
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seekSingleGitFile :: FilePath -> Annex (Maybe FilePath)
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seekSingleGitFile file = do
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(l, cleanup) <- inRepo (Git.LsFiles.inRepo [file])
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r <- case l of
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(f:[]) | takeFileName f == takeFileName file -> return (Just f)
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_ -> return Nothing
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void $ liftIO cleanup
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return r
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