git-annex/Command/Copy.hs

40 lines
1.2 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Copy where
import Common.Annex
import Command
import qualified Command.Move
import qualified Remote
import Annex.Wanted
import Config.NumCopies
cmd :: [Command]
cmd = [withOptions Command.Move.moveOptions $ command "copy" paramPaths seek
SectionCommon "copy content of files to/from another repository"]
seek :: CommandSeek
seek ps = do
to <- getOptionField toOption Remote.byNameWithUUID
from <- getOptionField fromOption Remote.byNameWithUUID
withKeyOptions
(Command.Move.startKey to from False)
(withFilesInGit $ whenAnnexed $ start to from)
ps
{- A copy is just a move that does not delete the source file.
- However, --auto mode avoids unnecessary copies, and avoids getting or
- sending non-preferred content. -}
start :: Maybe Remote -> Maybe Remote -> FilePath -> Key -> CommandStart
start to from file key = stopUnless shouldCopy $
Command.Move.start to from False file key
where
shouldCopy = checkAuto (check <||> numCopiesCheck file key (<))
check = case to of
Nothing -> wantGet False (Just key) (Just file)
Just r -> wantSend False (Just key) (Just file) (Remote.uuid r)