ANT copy task: Filesystem diff to recognize file deletions

Question

In my project setting I have for example the following file system setting:

Directory A file1

Directory B file1 file2

I have a copy task in my ant script which copies the whole content of Dir A into Dir B with overwrite=true. But I want a task which recognizes that file2 has been deleted in Dir A and therefore also deletes it in Dir B. This must be recognized for recursive directory hierarchies inside these two folders A and B. It is enough if it works only one way (A->B).

Is there anything available which does this?

Answer 1

The simple solution is to delete the content of Directory B before copying.