93 lines
2.6 KiB
Haskell
93 lines
2.6 KiB
Haskell
{- git-annex command
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-
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- Copyright 2010 Joey Hess <joey@kitenet.net>
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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.Add where
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import Common.Annex
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import Annex.Exception
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import Command
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import qualified Annex
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import qualified Annex.Queue
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import qualified Backend
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import Logs.Location
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import Annex.Content
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import Utility.Touch
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def :: [Command]
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def = [command "add" paramPaths seek "add files to annex"]
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{- Add acts on both files not checked into git yet, and unlocked files. -}
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seek :: [CommandSeek]
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seek = [withFilesNotInGit start, withFilesUnlocked start]
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{- The add subcommand annexes a file, storing it in a backend, and then
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- moving it into the annex directory and setting up the symlink pointing
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- to its content. -}
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start :: FilePath -> CommandStart
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start file = notBareRepo $ ifAnnexed file fixup add
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where
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add = do
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s <- liftIO $ getSymbolicLinkStatus file
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if isSymbolicLink s || not (isRegularFile s)
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then stop
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else do
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showStart "add" file
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next $ perform file
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fixup (key, _) = do
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-- fixup from an interrupted add; the symlink
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-- is present but not yet added to git
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showStart "add" file
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liftIO $ removeFile file
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next $ next $ cleanup file key =<< inAnnex key
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perform :: FilePath -> CommandPerform
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perform file = do
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backend <- Backend.chooseBackend file
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Backend.genKey file backend >>= go
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where
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go Nothing = stop
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go (Just (key, _)) = do
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handle (undo file key) $ moveAnnex key file
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next $ cleanup file key True
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{- On error, put the file back so it doesn't seem to have vanished.
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- This can be called before or after the symlink is in place. -}
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undo :: FilePath -> Key -> IOException -> Annex a
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undo file key e = do
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whenM (inAnnex key) $ do
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liftIO $ whenM (doesFileExist file) $ removeFile file
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handle tryharder $ fromAnnex key file
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logStatus key InfoMissing
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throw e
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where
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-- fromAnnex could fail if the file ownership is weird
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tryharder :: IOException -> Annex ()
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tryharder _ = do
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src <- inRepo $ gitAnnexLocation key
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liftIO $ moveFile src file
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cleanup :: FilePath -> Key -> Bool -> CommandCleanup
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cleanup file key hascontent = do
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handle (undo file key) $ do
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link <- calcGitLink file key
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liftIO $ createSymbolicLink link file
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when hascontent $ do
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logStatus key InfoPresent
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-- touch the symlink to have the same mtime as the
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-- file it points to
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liftIO $ do
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mtime <- modificationTime <$> getFileStatus file
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touch file (TimeSpec mtime) False
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params <- ifM (Annex.getState Annex.force)
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( return [Param "-f"]
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, return []
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)
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Annex.Queue.add "add" (params++[Param "--"]) [file]
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return True
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