Safe saving: don't use temporary file when the destination file does not exist.

This ensures that .resx files exist when they are saved, which is required to add them to version control. Fixes forum-6459.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@3058 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Main/Base/Project/Src/Services/File/OpenedFile.cs

@@ -203,7 +203,7 @@ namespace ICSharpCode.SharpDevelop
 			if (IsUntitled)
 				throw new InvalidOperationException("Cannot save an untitled file to disk!");
 			
-			bool safeSaving = FileService.SaveUsingTemporaryFile;
+			bool safeSaving = FileService.SaveUsingTemporaryFile && File.Exists(FileName);
 			string saveAs = safeSaving ? FileName + ".bak" : FileName;
 			using (FileStream fs = new FileStream(saveAs, FileMode.Create, FileAccess.Write)) {
 				if (currentView != null) {
@@ -213,15 +213,10 @@ namespace ICSharpCode.SharpDevelop
 				}
 			}
 			if (safeSaving) {
-				DateTime? creationTime = null;
-				if (File.Exists(FileName)) {
-					creationTime = File.GetCreationTimeUtc(FileName);
-					File.Delete(FileName);
-				}
+				DateTime creationTime = File.GetCreationTimeUtc(FileName);
+				File.Delete(FileName);
 				File.Move(saveAs, FileName);
-				if (creationTime != null) {
-					File.SetCreationTimeUtc(FileName, creationTime.Value);
-				}
+				File.SetCreationTimeUtc(FileName, creationTime);
 			}
 			IsDirty = false;
 		}