lxml precaching DTD for document verification.

[Stefan Behnel]

Gelonida N, 27.11.2011 18:57:
> I'd like to verify some (x)html / / html5 / xml documents from a server.
>
> These documents have a very limited number of different doc types / DTDs.
>
> So what I would like to do is to build a small DTD cache and some code,
> that would avoid searching the DTDs over and over from the net.
>
> What would be the best way to do this?

Configure your XML catalogues.


> I guess, that
> the fields od en ElementTre, that I have to look at are
> docinfo.public_id
> docinfo.system_uri

Yes, catalogue lookups generally happen through the public ID.


> There's also mentioning af a catalogue, but I don't know how to
> use a catalog and how to know what is inside my catalogue
> and what isn't.

Does this help?

http://lxml.de/resolvers.html#xml-catalogs

http://xmlsoft.org/catalog.html

They should normally come pre-configured on Linux distributions, but you 
may have to install additional packages with the respective DTDs. Look for 
any packages with "dtd" and "html" in their name, for example.

Stefan