git-annex/Command/Copy.hs
Joey Hess a7f58634b8 wip
2015-07-09 16:05:45 -04:00

57 lines
1.6 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <id@joeyh.name>
-
- 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 Annex.NumCopies
cmd :: Command
cmd = command "copy" SectionCommon
"copy content of files to/from another repository"
paramPaths (seek <--< optParser)
data CopyOptions = CopyOptions
{ moveOptions :: Command.Move.MoveOptions
, autoMode :: Bool
}
optParser :: CmdParamsDesc -> Parser CopyOptions
optParser desc = CopyOptions
<$> Command.Move.optParser desc
<*> parseAutoOption
instance DeferredParseClass CopyOptions where
finishParse v = CopyOptions
<$> finishParse (moveOptions v)
<*> pure (autoMode v)
seek :: CopyOptions -> CommandSeek
seek o = withKeyOptions (Command.Move.keyOptions $ moveOptions o) (autoMode o)
(Command.Move.startKey (moveOptions o) False)
(withFilesInGit $ whenAnnexed $ start o)
(Command.Move.moveFiles $ moveOptions o)
{- 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 :: CopyOptions -> FilePath -> Key -> CommandStart
start o file key = stopUnless shouldCopy $
Command.Move.start (moveOptions o) False file key
where
shouldCopy
| autoMode o = want <||> numCopiesCheck file key (<)
| otherwise = return True
want = case Command.Move.fromToOptions (moveOptions o) of
ToRemote _ ->
wantGet False (Just key) (Just file)
FromRemote dest -> (Remote.uuid <$> getParsed dest) >>=
wantSend False (Just key) (Just file)