mirror: Support --all (and --unused).

Assistant/Drop.hs

@@ -102,10 +102,10 @@ handleDropsFrom locs rs reason fromhere key (Just afile) knownpresentremote = do
 			)
 
 	dropl fs n = checkdrop fs n Nothing $ \numcopies ->
-		Command.Drop.startLocal afile numcopies key knownpresentremote
+		Command.Drop.startLocal (Just afile) numcopies key knownpresentremote
 
 	dropr fs r n  = checkdrop fs n (Just $ Remote.uuid r) $ \numcopies ->
-		Command.Drop.startRemote afile numcopies key r
+		Command.Drop.startRemote (Just afile) numcopies key r
 
 	safely a = either (const False) id <$> tryAnnex a
 

Command/Drop.hs

@@ -18,6 +18,7 @@ import Annex.Content
 import Config
 import qualified Option
 import Annex.Wanted
+import Types.Key
 
 def :: [Command]
 def = [withOptions [fromOption] $ command "drop" paramPaths seek
@@ -34,21 +35,21 @@ start :: Maybe Remote -> FilePath -> (Key, Backend) -> CommandStart
 start from file (key, _) = checkDropAuto from file key $ \numcopies ->
 	stopUnless (checkAuto $ wantDrop False (Remote.uuid <$> from) (Just file)) $
 		case from of
-			Nothing -> startLocal file numcopies key Nothing
+			Nothing -> startLocal (Just file) numcopies key Nothing
 			Just remote -> do
 				u <- getUUID
 				if Remote.uuid remote == u
-					then startLocal file numcopies key Nothing
-					else startRemote file numcopies key remote
+					then startLocal (Just file) numcopies key Nothing
+					else startRemote (Just file) numcopies key remote
 
-startLocal :: FilePath -> Maybe Int -> Key -> Maybe Remote -> CommandStart
-startLocal file numcopies key knownpresentremote = stopUnless (inAnnex key) $ do
-	showStart "drop" file
+startLocal :: AssociatedFile -> Maybe Int -> Key -> Maybe Remote -> CommandStart
+startLocal afile numcopies key knownpresentremote = stopUnless (inAnnex key) $ do
+	showStart "drop" (fromMaybe (key2file key) afile)
 	next $ performLocal key numcopies knownpresentremote
 
-startRemote :: FilePath -> Maybe Int -> Key -> Remote -> CommandStart
-startRemote file numcopies key remote = do
-	showStart ("drop " ++ Remote.name remote) file
+startRemote :: AssociatedFile -> Maybe Int -> Key -> Remote -> CommandStart
+startRemote afile numcopies key remote = do
+	showStart ("drop " ++ Remote.name remote) (fromMaybe (key2file key) afile)
 	next $ performRemote key numcopies remote
 
 performLocal :: Key -> Maybe Int -> Maybe Remote -> CommandPerform

Command/Mirror.hs

@@ -18,18 +18,25 @@ import Annex.Content
 import qualified Annex
 
 def :: [Command]
-def = [withOptions fromToOptions $ command "mirror" paramPaths seek
-	SectionCommon "mirror content of files to/from another repository"]
+def = [withOptions (fromToOptions ++ keyOptions) $
+	command "mirror" paramPaths seek
+		SectionCommon "mirror content of files to/from another repository"]
 
 seek :: [CommandSeek]
 seek =
 	[ withField toOption Remote.byNameWithUUID $ \to ->
 	  withField fromOption Remote.byNameWithUUID $ \from ->
+	  withKeyOptions (startKey Nothing to from Nothing) $
 	  withFilesInGit $ whenAnnexed $ start to from
 	]
 
 start :: Maybe Remote -> Maybe Remote -> FilePath -> (Key, Backend) -> CommandStart
 start to from file (key, _backend) = do
+	numcopies <- numCopies file
+	startKey numcopies to from (Just file) key
+
+startKey :: Maybe Int -> Maybe Remote -> Maybe Remote -> Maybe FilePath -> Key -> CommandStart
+startKey numcopies to from afile key = do
 	noAuto
 	case (from, to) of
 		(Nothing, Nothing) -> error "specify either --from or --to"
@@ -40,19 +47,15 @@ start to from file (key, _backend) = do
 	noAuto = whenM (Annex.getState Annex.auto) $
 		error "--auto is not supported for mirror"
 	mirrorto r = ifM (inAnnex key)
-		( Command.Move.toStart r False (Just file) key
-		, do
-			numcopies <- numCopies file
-			Command.Drop.startRemote file numcopies key r
+		( Command.Move.toStart r False afile key
+		, Command.Drop.startRemote afile numcopies key r
 		)
 	mirrorfrom r = do
 		haskey <- Remote.hasKey r key
 		case haskey of
 			Left _ -> stop
-			Right True -> Command.Get.start' (return True) Nothing key (Just file)
+			Right True -> Command.Get.start' (return True) Nothing key afile
 			Right False -> ifM (inAnnex key)
-				( do
-					numcopies <- numCopies file
-					Command.Drop.startLocal file numcopies key Nothing
+				( Command.Drop.startLocal afile numcopies key Nothing
 				, stop
 				)

debian/changelog

@@ -1,5 +1,6 @@
 git-annex (5.20131231) UNRELEASED; urgency=medium
 
+  * mirror: Support --all (and --unused).
   * external special remote protocol: Added GETUUID.
   * Windows: Fix bug in direct mode merge code that could cause files
     in subdirectories to go missing.

doc/git-annex.mdwn

@@ -181,11 +181,16 @@ subdirectories).
   repository. If a file's content is present in the source repository, it is
   copied to the destination repository. If a file's content is not present in
   the source repository, it will be dropped from the destination repository
-  when possible.
+  when the numcopies setting allows.
 
   Note that mirror does not sync the git repository, but only the file
   contents.
 
+  Also, --all may be specified to mirror all objects stored in the git
+  annex, not only objects used by currently existing files. However, this
+  bypasses checking the .gitattributes annex.numcopies setting when
+  dropping files.
+
 * `addurl [url ...]`
 
   Downloads each url to its own file, which is added to the annex.