This text is taken from the README and explains what mirror does and why I wrote it:

I think that I must have been looking for the wrong thing. When I restructured my web-site it became difficult to upload changes onto the server. What I needed was a program that copied files to the server. While I could find many programs that mirrored a web-site — copied them from the server — I couldn’t find any to do what I wanted.

One thing that really bugs me is badly formatted code. I’ve nearly written a PL/SQL indentation program a number of times, but have never actually? completed it.

But this time it’s different. I figured that most of the pretty printers out there are very poorly written and work only on one particular programming language. However, most languages are very similar to one another. They all have comments, blocks and ‘if’ statements.