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|
{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Add where
import Common.Annex
import Annex.Exception
import Command
import qualified Annex
import qualified Annex.Queue
import qualified Backend
import Logs.Location
import Annex.Content
import Utility.Touch
def :: [Command]
def = [command "add" paramPaths seek "add files to annex"]
{- Add acts on both files not checked into git yet, and unlocked files. -}
seek :: [CommandSeek]
seek = [withFilesNotInGit start, withFilesUnlocked start]
{- The add subcommand annexes a file, storing it in a backend, and then
- moving it into the annex directory and setting up the symlink pointing
- to its content. -}
start :: FilePath -> CommandStart
start file = notBareRepo $ ifAnnexed file fixup add
where
add = do
s <- liftIO $ getSymbolicLinkStatus file
if isSymbolicLink s || not (isRegularFile s)
then stop
else do
showStart "add" file
next $ perform file
fixup (key, _) = do
-- fixup from an interrupted add; the symlink
-- is present but not yet added to git
showStart "add" file
liftIO $ removeFile file
next $ next $ cleanup file key =<< inAnnex key
perform :: FilePath -> CommandPerform
perform file = do
backend <- Backend.chooseBackend file
Backend.genKey file backend >>= go
where
go Nothing = stop
go (Just (key, _)) = do
handle (undo file key) $ moveAnnex key file
next $ cleanup file key True
{- On error, put the file back so it doesn't seem to have vanished.
- This can be called before or after the symlink is in place. -}
undo :: FilePath -> Key -> IOException -> Annex a
undo file key e = do
whenM (inAnnex key) $ do
liftIO $ whenM (doesFileExist file) $ removeFile file
handle tryharder $ fromAnnex key file
logStatus key InfoMissing
throw e
where
-- fromAnnex could fail if the file ownership is weird
tryharder :: IOException -> Annex ()
tryharder _ = do
src <- inRepo $ gitAnnexLocation key
liftIO $ moveFile src file
cleanup :: FilePath -> Key -> Bool -> CommandCleanup
cleanup file key hascontent = do
handle (undo file key) $ do
link <- calcGitLink file key
liftIO $ createSymbolicLink link file
when hascontent $ do
logStatus key InfoPresent
-- touch the symlink to have the same mtime as the
-- file it points to
liftIO $ do
mtime <- modificationTime <$> getFileStatus file
touch file (TimeSpec mtime) False
params <- ifM (Annex.getState Annex.force)
( return [Param "-f"]
, return []
)
Annex.Queue.add "add" (params++[Param "--"]) [file]
return True
|
