DRY up

services/web/public/coffee/ide/editor/Document.coffee

@@ -256,17 +256,7 @@ define [
 					return callback(error) if error?
 					@joined = true
 					@doc.catchUp( updates )
-
-					if ranges?.changes
-						changes = for change in ranges.changes
-							change.op.i = decodeURIComponent(escape(change.op.i)) if change.op.i
-							change.op.d = decodeURIComponent(escape(change.op.d)) if change.op.d
-							change
-					if ranges?.comments
-						comments = for comment in ranges.comments
-							comment.op.c = decodeURIComponent(escape(comment.op.c))
-							comment
-
+					{ changes, comments } = @_decodeRanges(ranges)
 					@_catchUpRanges( changes, comments )
 					callback()
 			else
@@ -274,21 +264,23 @@ define [
 					return callback(error) if error?
 					@joined = true
 					@doc = new ShareJsDoc @doc_id, docLines, version, @ide.socket
-
-					if ranges?.changes
-						changes = for change in ranges.changes
-							change.op.i = decodeURIComponent(escape(change.op.i)) if change.op.i
-							change.op.d = decodeURIComponent(escape(change.op.d)) if change.op.d
-							change
-					if ranges?.comments
-						comments = for comment in ranges.comments
-							comment.op.c = decodeURIComponent(escape(comment.op.c))
-							comment
-
+					{ changes, comments } = @_decodeRanges(ranges)
 					@ranges = new RangesTracker(changes, comments)
 					@_bindToShareJsDocEvents()
 					callback()
 
+		_decodeRanges: (ranges) ->
+			if ranges?.changes
+				changes = for change in ranges.changes
+					change.op.i = decodeURIComponent(escape(change.op.i)) if change.op.i
+					change.op.d = decodeURIComponent(escape(change.op.d)) if change.op.d
+					change
+			if ranges?.comments
+				comments = for comment in ranges.comments
+					comment.op.c = decodeURIComponent(escape(comment.op.c))
+					comment
+			{ changes, comments }
+
 		_leaveDoc: (callback = (error) ->) ->
 			sl_console.log '[_leaveDoc] Sending leaveDoc request'
 			@ide.socket.emit 'leaveDoc', @doc_id, (error) =>