git-annex/Command/Status.hs
2015-01-21 12:50:09 -04:00

90 lines
2.3 KiB
Haskell

{- git-annex command
-
- Copyright 2013 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Status where
import Common.Annex
import Command
import Annex.CatFile
import Annex.Content.Direct
import Config
import qualified Git.LsFiles as LsFiles
import qualified Git.Ref
import qualified Git
cmd :: [Command]
cmd = [notBareRepo $ noCommit $ noMessages $ withOptions [jsonOption] $
command "status" paramPaths seek SectionCommon
"show the working tree status"]
seek :: CommandSeek
seek = withWords start
start :: [FilePath] -> CommandStart
start [] = do
-- Like git status, when run without a directory, behave as if
-- given the path to the top of the repository.
top <- fromRepo Git.repoPath
d <- liftIO $ relPathCwdToFile top
start' [d]
start locs = start' locs
start' :: [FilePath] -> CommandStart
start' locs = do
(l, cleanup) <- inRepo $ LsFiles.modifiedOthers locs
getstatus <- ifM isDirect
( return statusDirect
, return $ Just <$$> statusIndirect
)
forM_ l $ \f -> maybe noop (showFileStatus f) =<< getstatus f
void $ liftIO cleanup
stop
data Status
= NewFile
| DeletedFile
| ModifiedFile
showStatus :: Status -> String
showStatus NewFile = "?"
showStatus DeletedFile = "D"
showStatus ModifiedFile = "M"
showFileStatus :: FilePath -> Status -> Annex ()
showFileStatus f s = unlessM (showFullJSON [("status", ss), ("file", f)]) $
liftIO $ putStrLn $ ss ++ " " ++ f
where
ss = showStatus s
statusDirect :: FilePath -> Annex (Maybe Status)
statusDirect f = checkstatus =<< liftIO (catchMaybeIO $ getFileStatus f)
where
checkstatus Nothing = return $ Just DeletedFile
checkstatus (Just s)
-- Git thinks that present direct mode files are modifed,
-- so have to check.
| not (isSymbolicLink s) = checkkey s =<< catKeyFile f
| otherwise = Just <$> checkNew f
checkkey s (Just k) = ifM (sameFileStatus k f s)
( return Nothing
, return $ Just ModifiedFile
)
checkkey _ Nothing = Just <$> checkNew f
statusIndirect :: FilePath -> Annex Status
statusIndirect f = ifM (liftIO $ isJust <$> catchMaybeIO (getFileStatus f))
( checkNew f
, return DeletedFile
)
where
checkNew :: FilePath -> Annex Status
checkNew f = ifM (isJust <$> catObjectDetails (Git.Ref.fileRef f))
( return ModifiedFile
, return NewFile
)