The Perl Script for creating a BibTeX file: progress report

My back up files are not html or plain text but I can "view as source" each month's posts and then save these html files on my local computer. So I can create the text files needed. I searched google for Perl scripts. The Perl scripts I have viewed so far seem to have some of the required stuff but my script will need to be more complex and I may, in fact, use regular expressions mixed with Perl.