From 08236e780fd0047b1dbab2ef7c50d96be8709cab Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@kitenet.net>
Date: Sat, 23 Oct 2010 14:14:36 -0400
Subject: [PATCH] reorg

---
 Backend/File.hs | 29 ++++-------------------------
 Remotes.hs      | 47 +++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 49 insertions(+), 27 deletions(-)

diff --git a/Backend/File.hs b/Backend/File.hs
index dbd0674286..14b4b9dae5 100644
--- a/Backend/File.hs
+++ b/Backend/File.hs
@@ -66,31 +66,10 @@ copyKeyFile key file = do
 			showLocations key
 			return False
 		trycopy full (r:rs) = do
-			-- annexLocation needs the git config to have been
-			-- read for a remote, so do that now,
-			-- if it hasn't been already
-			result <- Remotes.tryGitConfigRead r
-			case (result) of
-				Left err -> trycopy full rs
-				Right r' -> do
-					showNote $ "copying from " ++ (Git.repoDescribe r) ++ "..."
-					liftIO $ copyFromRemote r' key file
-
-{- Tries to copy a file from a remote. -}
-copyFromRemote :: Git.Repo -> Key -> FilePath -> IO Bool
-copyFromRemote r key file = do
-	if (not $ Git.repoIsUrl r)
-		then getlocal
-		else if (Git.repoIsSsh r)
-			then getssh
-			else error "copying from non-ssh repo not supported"
-	where
-		getlocal = boolSystem "cp" ["-a", location, file]
-		getssh = do
-			liftIO $ putStrLn "" -- make way for scp progress bar
-			boolSystem "scp" [sshlocation, file]
-		location = annexLocation r key
-		sshlocation = (Git.urlHost r) ++ ":" ++ location
+			copied <- Remotes.copyFromRemote r key file
+			if (copied)
+				then return True
+				else trycopy full rs
 
 {- Checks remotes to verify that enough copies of a key exist to allow
  - for a key to be safely removed (with no data loss), and fails with an
diff --git a/Remotes.hs b/Remotes.hs
index 13f66aae23..a4b358c779 100644
--- a/Remotes.hs
+++ b/Remotes.hs
@@ -4,7 +4,9 @@ module Remotes (
 	list,
 	keyPossibilities,
 	tryGitConfigRead,
-	inAnnex
+	inAnnex,
+	commandLineRemote,
+	copyFromRemote
 ) where
 
 import Control.Exception
@@ -20,10 +22,11 @@ import Types
 import qualified GitRepo as Git
 import qualified Annex
 import qualified Backend
+import qualified Core
 import LocationLog
 import Locations
 import UUID
-import qualified Core
+import Utility
 
 {- Human visible list of remotes. -}
 list :: [Git.Repo] -> String
@@ -134,6 +137,22 @@ repoNotIgnored r = do
 		config g = Git.configGet g configkey ""
 		configkey = "remote." ++ (Git.repoRemoteName r) ++ ".annex-ignore"
 
+{- Returns the remote specified by --from or --to, may fail with error. -}
+commandLineRemote :: Annex Git.Repo
+commandLineRemote = do
+	fromName <- Annex.flagGet "fromrepository"
+	toName <- Annex.flagGet "torepository"
+	let name = if (not $ null fromName) then fromName else toName
+	if (null name)
+		then error "no remote specified"
+		else do
+			g <- Annex.gitRepo
+			let match = filter (\r -> name == Git.repoRemoteName r) $
+				Git.remotes g
+			if (null match)
+				then error $ "there is no git remote named \"" ++ name ++ "\""
+				else return $ match !! 0
+
 {- The git configs for the git repo's remotes is not read on startup
  - because reading it may be expensive. This function tries to read the
  - config for a specified remote, and updates state. If successful, it
@@ -161,3 +180,27 @@ tryGitConfigRead r = do
 			if ((Git.repoRemoteName old) == (Git.repoRemoteName new))
 				then new:(exchange ls new)
 				else old:(exchange ls new)
+
+{- Tries to copy a file from a remote. -}
+copyFromRemote :: Git.Repo -> Key -> FilePath -> Annex Bool
+copyFromRemote r key file = do
+	-- annexLocation needs the git config to have been read for a remote,
+	-- so do that now if it hasn't been already
+	result <- tryGitConfigRead r
+	case (result) of
+		Left err -> return False
+		Right r' -> copy r'
+	where
+		copy r = do
+			Core.showNote $ "copying from " ++ (Git.repoDescribe r) ++ "..."
+			if (not $ Git.repoIsUrl r)
+				then getlocal
+				else if (Git.repoIsSsh r)
+					then getssh
+					else error "copying from non-ssh repo not supported"
+		getlocal = liftIO $ boolSystem "cp" ["-a", location, file]
+		getssh = do
+			liftIO $ putStrLn "" -- make way for scp progress bar
+			liftIO $ boolSystem "scp" [sshlocation, file]
+		location = annexLocation r key
+		sshlocation = (Git.urlHost r) ++ ":" ++ location