move module only used by assistant

Assistant/MakeRepo.hs

@@ -0,0 +1,90 @@
+{- making local repositories
+ -
+ - Copyright 2012-2014 Joey Hess <id@joeyh.name>
+ -
+ - Licensed under the GNU AGPL version 3 or higher.
+ -}
+
+module Assistant.MakeRepo where
+
+import Assistant.WebApp.Common
+import Annex.Init
+import qualified Git.Construct
+import qualified Git.Config
+import qualified Git.Command
+import qualified Git.Branch
+import qualified Annex
+import Annex.UUID
+import Annex.Direct
+import Annex.Action
+import Types.StandardGroups
+import Logs.PreferredContent
+import qualified Annex.Branch
+import Utility.Process.Transcript
+
+{- Makes a new git repository. Or, if a git repository already
+ - exists, returns False. -}
+makeRepo :: FilePath -> Bool -> IO Bool
+makeRepo path bare = ifM (probeRepoExists path)
+	( return False
+	, do
+		(transcript, ok) <-
+			processTranscript "git" (toCommand params) Nothing
+		unless ok $
+			error $ "git init failed!\nOutput:\n" ++ transcript
+		return True
+	)
+  where
+	baseparams = [Param "init", Param "--quiet"]
+	params
+		| bare = baseparams ++ [Param "--bare", File path]
+		| otherwise = baseparams ++ [File path]
+
+{- Runs an action in the git repository in the specified directory. -}
+inDir :: FilePath -> Annex a -> IO a
+inDir dir a = do
+	state <- Annex.new =<< Git.Config.read =<< Git.Construct.fromPath dir
+	Annex.eval state $ a `finally` stopCoProcesses
+
+{- Creates a new repository, and returns its UUID. -}
+initRepo :: Bool -> Bool -> FilePath -> Maybe String -> Maybe StandardGroup -> IO UUID
+initRepo True primary_assistant_repo dir desc mgroup = inDir dir $ do
+	initRepo' desc mgroup
+	{- Initialize the master branch, so things that expect
+	 - to have it will work, before any files are added. -}
+	unlessM (Git.Config.isBare <$> gitRepo) $
+		void $ inRepo $ Git.Branch.commitCommand Git.Branch.AutomaticCommit
+			[ Param "--quiet"
+			, Param "--allow-empty"
+			, Param "-m"
+			, Param "created repository"
+			]
+	{- Repositories directly managed by the assistant use direct mode.
+	 - 
+	 - Automatic gc is disabled, as it can be slow. Insted, gc is done
+	 - once a day.
+	 -}
+	when primary_assistant_repo $ do
+		setDirect True
+		inRepo $ Git.Command.run
+			[Param "config", Param "gc.auto", Param "0"]
+	getUUID
+{- Repo already exists, could be a non-git-annex repo though so
+ - still initialize it. -}
+initRepo False _ dir desc mgroup = inDir dir $ do
+	initRepo' desc mgroup
+	getUUID
+
+initRepo' :: Maybe String -> Maybe StandardGroup -> Annex ()
+initRepo' desc mgroup = unlessM isInitialized $ do
+	initialize desc Nothing
+	u <- getUUID
+	maybe noop (defaultStandardGroup u) mgroup
+	{- Ensure branch gets committed right away so it is
+	 - available for merging immediately. -}
+	Annex.Branch.commit =<< Annex.Branch.commitMessage
+
+{- Checks if a git repo exists at a location. -}
+probeRepoExists :: FilePath -> IO Bool
+probeRepoExists dir = isJust <$>
+	catchDefaultIO Nothing (Git.Construct.checkForRepo dir)