split out DiffTreeItem

This makes github-backup happier when it reuses this library.

Git/DiffTree.hs

@@ -16,25 +16,16 @@ module Git.DiffTree (
 ) where
 
 import Numeric
-import System.Posix.Types
 
 import Common
 import Git
 import Git.Sha
 import Git.Command
 import Git.FilePath
+import Git.DiffTreeItem
 import qualified Git.Filename
 import qualified Git.Ref
 
-data DiffTreeItem = DiffTreeItem
-	{ srcmode :: FileMode
-	, dstmode :: FileMode
-	, srcsha :: Sha -- nullSha if file was added
-	, dstsha :: Sha -- nullSha if file was deleted
-	, status :: String
-	, file :: TopFilePath
-	} deriving Show
-
 {- Checks if the DiffTreeItem modifies a file with a given name
  - or under a directory by that name. -}
 isDiffOf :: DiffTreeItem -> TopFilePath -> Bool

Git/DiffTreeItem.hs

@@ -0,0 +1,24 @@
+{- git diff-tree item
+ -
+ - Copyright 2012 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Git.DiffTreeItem (
+	DiffTreeItem(..),
+) where
+
+import System.Posix.Types
+
+import Git.FilePath
+import Git.Types
+
+data DiffTreeItem = DiffTreeItem
+	{ srcmode :: FileMode
+	, dstmode :: FileMode
+	, srcsha :: Sha -- nullSha if file was added
+	, dstsha :: Sha -- nullSha if file was deleted
+	, status :: String
+	, file :: TopFilePath
+	} deriving Show

Git/UpdateIndex.hs

@@ -29,7 +29,7 @@ import Git.Types
 import Git.Command
 import Git.FilePath
 import Git.Sha
-import qualified Git.DiffTree as Diff
+import qualified Git.DiffTreeItem as Diff
 
 {- Streamers are passed a callback and should feed it lines in the form
  - read by update-index, and generated by ls-tree. -}