+
+ // Now divide the two sets into three sets (union and set differences)
+ FileDataPtrCmp cmp;
+
+ file_set new_set;
+ set_difference( current_files.begin(), current_files.end(),
+ previous_files.begin(), previous_files.end(),
+ inserter( new_set, new_set.begin() ),
+ cmp );
+
+ file_set deleted_set;
+ set_difference( previous_files.begin(), previous_files.end(),
+ current_files.begin(), current_files.end(),
+ inserter( deleted_set, deleted_set.begin() ),
+ cmp );
+
+ // previous_files *should* definitely be the first set here
+ file_set common_set;
+ set_difference( previous_files.begin(), previous_files.end(),
+ current_files.begin(), current_files.end(),
+ inserter( common_set, common_set.begin() ),
+ cmp );