RCS Programming Interface

Hello,

I want to use rcs from within another program (i.e. programatically, not 
interactively). So I'm wondering if it is possible to use rcs as a C 
library or even if there are any bindings for other languages. If this 
is not possible so far: would you (someone who is familiar with the 
source code) say, with reasonable effort one could create such an interface?
Or is rcs' architecture just not suitable for this?

All I found so far are programs and wrappers that internally use the rcs 
command line interface in a separate process and parse it's output.

Best regards,

Tobias