perltidy -html -css=mystyle.css somefile.pl

UPDATE:
Ooooops ... i glanced over "ranging from Perl to config files to Java, etc." Hmmmm, i do know that gvim has a menu command Syntax->Convert to HTML, but i do not know how to access this via command line. If you can indeed do such, a Cheap Solution® might be to fork and exec a another process. Coding only in Perl is another choice i can think of ... ;)

UPDATE x 2:
ndwg++ :)

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)