60 lines
1.6 KiB
Haskell
60 lines
1.6 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 AGPL 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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import Git.Types
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import Utility.Terminal
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import Utility.SafeOutput
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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 optParser)
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data LookupKeyOptions = LookupKeyOptions
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{ refOption :: Bool
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}
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optParser :: Parser LookupKeyOptions
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optParser = LookupKeyOptions
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<$> switch
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( long "ref"
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<> help "look up key used by git ref to file"
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)
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run :: LookupKeyOptions -> SeekInput -> String -> Annex Bool
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run o _ file
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| refOption o = catKey (Ref (toRawFilePath file)) >>= display
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| otherwise = seekSingleGitFile file >>= \case
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Nothing -> return False
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Just file' -> catKeyFile file' >>= display
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display :: Maybe Key -> Annex Bool
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display (Just k) = do
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IsTerminal isterminal <- liftIO $ checkIsTerminal stdout
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let sk = serializeKey k
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liftIO $ putStrLn $ if isterminal then safeOutput sk else sk
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return True
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display 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 RawFilePath)
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seekSingleGitFile file = do
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(l, cleanup) <- inRepo (Git.LsFiles.inRepo [] [toRawFilePath file])
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r <- case l of
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(f:[]) | takeFileName (fromRawFilePath f) == takeFileName file ->
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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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