refactor

Core.hs

@@ -5,8 +5,6 @@ module Core where
 import System.IO
 import System.Directory
 import Control.Monad.State (liftIO)
-import Control.Exception
-import CmdLine
 import Types
 import BackendList
 import Locations
@@ -33,35 +31,6 @@ start = do
 				Git.configGet g' "annex.backends" ""
 			prepUUID
 
-{- Processes each param in the list by dispatching the handler function
- - for the user-selection operation mode. Catches exceptions, not stopping
- - if some error out, and propigates an overall error status at the end.
- -
- - This runs in the IO monad, not in the Annex monad. It seems that
- - exceptions can only be caught in the IO monad, not in a stacked monad;
- - or more likely I missed an easy way to do it. So, I have to laboriously
- - thread AnnexState through this function.
- -}
-tryRun :: AnnexState -> Mode -> [String] -> IO ()
-tryRun state mode params = tryRun' state mode 0 0 params
-tryRun' state mode errnum oknum [] = do
-	if (errnum > 0)
-		then error $ (show errnum) ++ " failed ; " ++ show (oknum) ++ " ok"
-		else return ()
-tryRun' state mode errnum oknum (f:fs) = do
-	result <- try
-		(Annex.run state (dispatch mode f))::IO (Either SomeException ((), AnnexState))
-	case (result) of
-		Left err -> do
-			showErr err
-			tryRun' state mode (errnum + 1) oknum fs
-		Right (_,state') -> tryRun' state' mode errnum (oknum + 1) fs
-
-{- Exception pretty-printing. -}
-showErr e = do
-	hPutStrLn stderr $ "git-annex: " ++ (show e)
-	return ()
-
 {- Sets up a git repo for git-annex. May be called repeatedly. -}
 gitSetup :: Git.Repo -> IO ()
 gitSetup repo = do
@@ -85,3 +54,9 @@ gitSetup repo = do
 			Git.run repo ["add", attributes]
 			Git.run repo ["commit", "-m", "git-annex setup", 
 					attributes]
+
+{- Checks if a given key is currently present in the annexLocation -}
+inAnnex :: Backend -> Key -> Annex Bool
+inAnnex backend key = do
+	g <- Annex.gitRepo
+	liftIO $ doesFileExist $ annexLocation g backend key