Fulltext Searching

Would it be possible/practical to integrate fulltext searching of the files stored within referencer not just the meta-data?

I'm not certain of the best way to do this whether to parse all the files and where possible pass the information into a database such as MySQL and then use its inbuilt searching capabilities or sqlite or both (bibus like). Or to use some internal system or using something like swish-e?

I was thinking of trying to write a plugin based on a MySQL database approach. I see that there is already a plugin for doing searching put it looks like for adding entries rather than finding entries as its main goal? I haven't looked but it would also appear that search-test as a database source is located in the main code somewhere?

PS

I've written a very crude plugin which converts ACS and RSC default pdf filenames into DOI strings. I'd be happy to put it somewhere. It is very basic and not very sophisticated it works on the premise that ACS pubs save by default to the end string of their DOI. Whilst RSC pubs do a similar thing now they also seemed to use a different convention previously. The python plugin just works like genkey but moving the title/filename to the DOI field after adding the correct journal prefix.