store trust.log and remote.log in the git-annex branch

.. and I think that's everything that will use the branch

Branch.hs

@@ -168,15 +168,6 @@ change file content = do
 		  Param sha, File file]
 	setCacheChanged file content
 
-{- Commits any staged changes to the branch. -}
-commit :: String -> Annex ()
-commit message = do
-	state <- getState
-	when (branchChanged state) $ do
-		g <- Annex.gitRepo
-		withIndex $ liftIO $
-			GitUnionMerge.commit g message fullname [fullname]
-
 {- Gets the content of a file on the branch, or content staged in the index
  - if it's newer. Returns an empty string if the file didn't exist yet. -}
 get :: FilePath -> Annex String
@@ -192,3 +183,12 @@ get file = do
 	where
 		cat g = Git.pipeRead g [Param "cat-file", Param "blob", catfile]
 		catfile = Param $ ':':file
+
+{- Commits any staged changes to the branch. -}
+commit :: String -> Annex ()
+commit message = do
+	state <- getState
+	when (branchChanged state) $ do
+		g <- Annex.gitRepo
+		withIndex $ liftIO $
+			GitUnionMerge.commit g message fullname [fullname]

CmdLine.hs

@@ -103,8 +103,8 @@ startup = do
 {- Cleanup actions. -}
 shutdown :: Annex Bool
 shutdown = do
-	Branch.commit "update"
 	AnnexQueue.flush False
+	Branch.commit "update"
 
 	liftIO $ Git.reap
 	

Command/InitRemote.hs

@@ -14,11 +14,8 @@ import Data.Maybe
 import Data.String.Utils
 
 import Command
-import qualified Annex
 import qualified Remote
 import qualified Types.Remote as R
-import qualified GitRepo as Git
-import Utility
 import Types
 import UUID
 import Messages
@@ -62,14 +59,6 @@ perform t u c = do
 cleanup :: UUID -> R.RemoteConfig -> CommandCleanup
 cleanup u c = do
 	Remote.configSet u c
-	g <- Annex.gitRepo
-	logfile <- Remote.remoteLog
-	liftIO $ Git.run g "add" [File logfile]
-        liftIO $ Git.run g "commit"
-                [ Params "-q --allow-empty -m"
-                , Param "git annex initremote"
-                , File logfile
-                ]
         return True
 
 {- Look up existing remote's UUID and config by name, or generate a new one -}

Locations.hs

@@ -20,7 +20,6 @@ module Locations (
 	gitAnnexBadLocation,
 	gitAnnexUnusedLog,
 	isLinkToAnnex,
-	uuidLog,
 	logFile,
 	logFileKey,
 	hashDirMixed,
@@ -118,10 +117,6 @@ gitAnnexUnusedLog prefix r = gitAnnexDir r </> (prefix ++ "unused")
 isLinkToAnnex :: FilePath -> Bool
 isLinkToAnnex s = ("/.git/" ++ objectDir) `isInfixOf` s
 
-{- Filename of uuid.log. -}
-uuidLog :: FilePath
-uuidLog = "uuid.log"
-
 {- The filename of the log file for a given key. -}
 logFile :: Key -> String
 logFile key = hashDirLower key ++ keyFile key ++ ".log"

Remote.hs

@@ -33,19 +33,17 @@ module Remote (
 	prop_idempotent_configEscape
 ) where
 
-import Control.Monad.State (liftIO)
 import Control.Monad (filterM)
 import Data.List
 import qualified Data.Map as M
 import Data.Maybe
 import Data.Char
 
+import qualified Branch
 import Types
 import Types.Remote
 import UUID
 import qualified Annex
-import Locations
-import Utility
 import Config
 import Trust
 import LocationLog
@@ -160,29 +158,21 @@ forceTrust level remotename = do
 		s { Annex.forcetrust = (r, level):Annex.forcetrust s }
 
 {- Filename of remote.log. -}
-remoteLog :: Annex FilePath
+remoteLog :: FilePath
-remoteLog = do
+remoteLog = "remote.log"
-	g <- Annex.gitRepo
-	return $ gitStateDir g ++ "remote.log"
 
 {- Adds or updates a remote's config in the log. -}
 configSet :: UUID -> RemoteConfig -> Annex ()
 configSet u c = do
 	m <- readRemoteLog
-	l <- remoteLog
+	Branch.change remoteLog $ unlines $ sort $
-	liftIO $ safeWriteFile l $ unlines $ sort $
 		map toline $ M.toList $ M.insert u c m
 	where
 		toline (u', c') = u' ++ " " ++ (unwords $ configToKeyVal c')
 
 {- Map of remotes by uuid containing key/value config maps. -}
 readRemoteLog :: Annex (M.Map UUID RemoteConfig)
-readRemoteLog = do
+readRemoteLog = return . remoteLogParse =<< Branch.get remoteLog
-	l <- remoteLog
-	s <- liftIO $ catch (readFile l) ignoreerror
-	return $ remoteLogParse s
-	where
-		ignoreerror _ = return ""
 
 remoteLogParse :: String -> M.Map UUID RemoteConfig
 remoteLogParse s =

Trust.hs

@@ -18,18 +18,14 @@ import Control.Monad.State
 import qualified Data.Map as M
 
 import TrustLevel
-import qualified GitRepo as Git
+import qualified Branch
 import Types
 import UUID
-import Locations
 import qualified Annex
-import Utility
 
 {- Filename of trust.log. -}
-trustLog :: Annex FilePath
+trustLog :: FilePath
-trustLog = do
+trustLog = "trust.log"
-	g <- Annex.gitRepo
-	return $ gitStateDir g ++ "trust.log"
 
 {- Returns a list of UUIDs at the specified trust level. -}
 trustGet :: TrustLevel -> Annex [UUID]
@@ -41,12 +37,9 @@ trustGet level = do
  - values from forcetrust -}
 trustMap :: Annex (M.Map UUID TrustLevel)
 trustMap = do
-	logfile <- trustLog
 	overrides <- Annex.getState Annex.forcetrust
-	s <- liftIO $ catch (readFile logfile) ignoreerror
+	s <- Branch.get trustLog
 	return $ M.fromList $ trustMapParse s ++ overrides
-	where
-                ignoreerror _ = return ""
 
 {- Trust map parser. -}
 trustMapParse :: String -> [(UUID, TrustLevel)]
@@ -60,7 +53,7 @@ trustMapParse s = map pair $ filter (not . null) $ lines s
 			where
 				w = words l
 
-{- Changes the trust level for a uuid in the trustLog, and commits it. -}
+{- Changes the trust level for a uuid in the trustLog. -}
 trustSet :: UUID -> TrustLevel -> Annex ()
 trustSet uuid level = do
 	when (null uuid) $
@@ -68,15 +61,7 @@ trustSet uuid level = do
         m <- trustMap
 	when (M.lookup uuid m /= Just level) $ do
 		let m' = M.insert uuid level m
-	        logfile <- trustLog
+		Branch.change trustLog (serialize m')
-	        liftIO $ safeWriteFile logfile (serialize m')
-		g <- Annex.gitRepo
-		liftIO $ Git.run g "add" [File logfile]
-		liftIO $ Git.run g "commit"
-			[ Params "-q -m"
-			, Param "git annex trust change"
-			, File logfile
-			]
         where
                 serialize m = unlines $ map showpair $ M.toList m
 		showpair (u, t) = u ++ " " ++ show t

UUID.hs

@@ -19,7 +19,8 @@ module UUID (
 	genUUID,
 	prettyPrintUUIDs,
 	describeUUID,
-	uuidMap
+	uuidMap,
+	uuidLog
 ) where
 
 import Control.Monad.State
@@ -35,11 +36,14 @@ import Types.UUID
 import qualified Annex
 import qualified SysConfig
 import Config
-import Locations
 
 configkey :: String
 configkey = "annex.uuid"
 
+{- Filename of uuid.log. -}
+uuidLog :: FilePath
+uuidLog = "uuid.log"
+
 {- Generates a UUID. There is a library for this, but it's not packaged,
  - so use the command line tool. -}
 genUUID :: IO UUID