git-annex/Command/FromKey.hs
Joey Hess 70736d2b41 Repository tuning parameters can now be passed when initializing a repository for the first time.
* init: Repository tuning parameters can now be passed when initializing a
  repository for the first time. For details, see
  http://git-annex.branchable.com/tuning/
* merge: Refuse to merge changes from a git-annex branch of a repo
  that has been tuned in incompatable ways.
2015-01-27 17:38:06 -04:00

44 lines
1.1 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.FromKey where
import Common.Annex
import Command
import qualified Annex.Queue
import Annex.Content
import Types.Key
cmd :: [Command]
cmd = [notDirect $ notBareRepo $
command "fromkey" (paramPair paramKey paramPath) seek
SectionPlumbing "adds a file using a specific key"]
seek :: CommandSeek
seek = withWords start
start :: [String] -> CommandStart
start (keyname:file:[]) = do
let key = fromMaybe (error "bad key") $ file2key keyname
inbackend <- inAnnex key
unless inbackend $ error $
"key ("++ keyname ++") is not present in backend"
showStart "fromkey" file
next $ perform key file
start _ = error "specify a key and a dest file"
perform :: Key -> FilePath -> CommandPerform
perform key file = do
link <- calcRepo $ gitAnnexLink file key
liftIO $ createDirectoryIfMissing True (parentDir file)
liftIO $ createSymbolicLink link file
next $ cleanup file
cleanup :: FilePath -> CommandCleanup
cleanup file = do
Annex.Queue.addCommand "add" [Param "--"] [file]
return True