[KevinH]

Okay just in case anyone is interested in a standalone python opf id updater that they can play with and tweak.

I have written one that uses modified version of an earlier opf parser I had lying around and some valid id generation code I borrowed from Sigil and converted to python and a pure python third party module called unidecode (to ascify file names) to make them suitable for id values.

I have put all of this in a zip and it is free for anyone to use in their own plugin or anyplace else.

It follows the rough approach of my previous post, should work for epub2 and epub3.

And since it uses a stateful opf parser, it can function in one pass.

I have attached it. Feel free to tweak it to make it suit your needs.

Comments and Improvements welcome.