Fontencrypt.py: Figiure it out

[brewt]

I've been having trouble with Paul Durrant's Fontencrypt.py script (Thanks, Paul!) and I think I've figured it out:

Calibre outputs a dc:identifier line that looks like this:

<dc:identifier id="uuid_id" opf:scheme="uuid">4e577f7f-4adb-4322-abc7-bd30293c822b</dc:identifier>

For Paul's script to work, it needs to look like this:

<dc:identifier id="uuid_id" opf:scheme="uuid">urn:uuid:4e577f7f-4adb-4322-abc7-bd30293c822b</dc:identifier>

and I don't know how to get calibre to do this; sure I could hand-hack the file, or try to botch encrypter script even more than I have already, but I'm at a bit of a loss as to how to do that, too.

Ideas?

-brewt

p.s. I can't spell headlines in a hurry in the morning - I'm "figuring" it out, doh.