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)
+		(\(s, u) -> line "content" u s)
-		(\u -> line "preferred-content" u "")
+		(\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 ->

GitAnnex.hs

@@ -52,6 +52,7 @@ import qualified Command.Untrust
 import qualified Command.Semitrust
 import qualified Command.Dead
 import qualified Command.Group
+import qualified Command.Content
 import qualified Command.Ungroup
 import qualified Command.Vicfg
 import qualified Command.Sync
@@ -105,6 +106,7 @@ cmds = concat
 	, Command.Semitrust.def
 	, Command.Dead.def
 	, Command.Group.def
+	, Command.Content.def
 	, Command.Ungroup.def
 	, Command.Vicfg.def
 	, Command.FromKey.def

Usage.hs

@@ -93,6 +93,8 @@ paramFile :: String
 paramFile = "FILE"
 paramGroup :: String
 paramGroup = "GROUP"
+paramExpression :: String
+paramExpression = "EXPR"
 paramSize :: String
 paramSize = "SIZE"
 paramAddress :: String

debian/changelog

@@ -15,6 +15,8 @@ git-annex (4.20130522) UNRELEASED; urgency=low
     are staged.
   * Improve error handling when getting uuid of http remotes to auto-ignore,
     like with ssh remotes.
+  * content: New command line way to view and configure a repository's
+    preferred content settings.
 
  -- Joey Hess <joeyh@debian.org>  Tue, 21 May 2013 18:22:46 -0400
 

doc/git-annex.mdwn

@@ -306,6 +306,14 @@ subdirectories).
 
   Removes a repository from a group.
 
+* content repository [expression]
+
+  When run with an expression, configures the content that is preferred
+  to be held in the archive. See PREFERRED CONTENT below.
+
+  Without an expression, displays the current preferred content setting
+  of the repository.
+
 * vicfg
 
   Opens EDITOR on a temp file containing most of the above configuration

doc/preferred_content.mdwn

@@ -6,10 +6,10 @@ control over which repositories prefer to have which content. Configuring
 this allows `git annex get --auto`, `git annex drop --auto`, etc to do
 smarter things.
 
-Currently, preferred content settings can only be edited using `git
+Preferred content settings can be edited using `git
-annex vicfg`. Each repository can have its own settings, and other
+annex vicfg`, or viewed and set at the command line with `git annex content`.
-repositories may also try to honor those settings. So there's no local
+Each repository can have its own settings, and other repositories may also
-`.git/config` setting it.
+try to honor those settings. So there's no local `.git/config` setting it.
 
 The idea is that you write an expression that files are matched against.
 If a file matches, it's preferred to have its content stored in the