C regex equiv to Python implementation?

[techiepundit at futurepundit.com]

I've been writing code in Python to prototype part of an application.
I've used the re regular expression pattern matcher. Now I have to take
what I've written and recode it in C to fit in an existing C app.

Anyway, is there a way to use the re regular expression evaluator in C?
Is it written in C?

Or does anyone know of a similar one that does search and match in
close to the same fashion with begin and end values returned?