Re: [xml] validation automatically turned on?

[Daniel Veillard <veillard redhat com>]

On Tue, Feb 04, 2003 at 04:21:35PM +0000, Justin Fletcher wrote:
> In message <3E3FE48C 9020205 webaccess mozquito com>
>           Stefano Debenedetti <ste webaccess mozquito com> wrote:
> 
> > I think it's validating because, unless I remove the DOCTYPE decl, parsing
> > takes a few seconds instead of a fraction of a second and if I change the
> > DTD url in it to a non-existing one I get a NanoHTTP error saying that
> > external entity loading failed. Weird 'cause the code I use is:
> 
> That's because it's tried to fetch an external entity - your DTD. Unless you
> tell it otherwise, it will go and fetch the DTD.

  Actually no. Libxml2 by default does not fetch the external subset.

> You're telling it not to validate, but it will still fetch the DTD so that
> it can resolve entities. If you don't want any network activity on DTDs then

  no, no, libxml2 default to the behaviour of non-validating parsers
described in the XML REC. But loading the external subset can be triggered 
independantly of the validation for example when doing XSLT processing.

> you will have to register an external entity loader function that rejects
> them. In xsltproc this is the --nonet option and the
> xmlNoNetExternalEntityLoader() function is the one you should be looking at
> to do this.

  Right. There are example in the python/test subdirectory to do this
directly from python.

Daniel

-- 
Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
veillard redhat com  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/