content: New command line way to view and configure a repository's preferred content settings.

Command/Content.hs

@@ -0,0 +1,48 @@
+{- git-annex command
+ -
+ - Copyright 2013 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Command.Content where
+
+import Common.Annex
+import Command
+import qualified Remote
+import Logs.PreferredContent
+
+import qualified Data.Map as M
+
+def :: [Command]
+def = [command "content" (paramPair paramRemote (paramOptional paramExpression)) seek
+	SectionSetup "get or set preferred content expression"]
+
+seek :: [CommandSeek]
+seek = [withWords start]
+
+start :: [String] -> CommandStart
+start = parse
+  where
+  	parse (name:[]) = go name performGet
+	parse (name:expr:[]) = go name $ \uuid -> do
+		showStart "content" name
+		performSet expr uuid
+	parse _ = error "Specify a repository."
+
+	go name a = do
+		u <- Remote.nameToUUID name
+		next $ a u
+
+performGet :: UUID -> CommandPerform
+performGet uuid = do
+	m <- preferredContentMapRaw
+	liftIO $ putStrLn $ fromMaybe "" $ M.lookup uuid m
+	next $ return True
+
+performSet :: String -> UUID -> CommandPerform
+performSet expr uuid = case checkPreferredContentExpression expr of
+	Just e -> error $ "Parse error: " ++ e
+	Nothing -> do
+		preferredContentSet uuid expr
+		next $ return True

Command/Group.hs

@@ -17,7 +17,7 @@ import qualified Data.Set as S
 
 def :: [Command]
 def = [command "group" (paramPair paramRemote paramDesc) seek
-	SectionCommon "add a repository to a group"]
+	SectionSetup "add a repository to a group"]
 
 seek :: [CommandSeek]
 seek = [withWords start]

Command/Vicfg.hs

@@ -117,8 +117,8 @@ genCfg cfg descs = unlines $ concat [intro, trust, groups, preferredcontent]
 		[ ""
 		, com "Repository preferred contents"
 		]
-		(\(s, u) -> line "preferred-content" u s)
-		(\u -> line "preferred-content" u "")
+		(\(s, u) -> line "content" u s)
+		(\u -> line "content" u "")
 
 	settings field desc showvals showdefaults = concat
 		[ desc
@@ -167,7 +167,7 @@ parseCfg curcfg = go [] curcfg . lines
 		| setting == "group" =
 			let m = M.insert u (S.fromList $ words value) (cfgGroupMap cfg)
 			in Right $ cfg { cfgGroupMap = m }
-		| setting == "preferred-content" = 
+		| setting == "content" = 
 			case checkPreferredContentExpression value of
 				Just e -> Left e
 				Nothing ->