Re: [xml] Refactoring of the SAX interface for namespace support.

[Daniel Veillard <veillard redhat com>]

On Wed, Aug 13, 2003 at 11:32:35AM +0100, Dave Beckett wrote:
> So the ordering should be:
>   begin startElement
>   1. namespaces declarations, [any other xml: stuff]
>   2. element name, attributes in any order
>   end startElement
>
> If you chose to provide such standalone namespace information
> you really have to keep to that.
>
> >   I think this would make scope detection more complex too.
> > This "use before declaration" is a property of the XML serialisation
>
> But the serialisation order isn't everything.  Attribute ordering or
> lack of it is another example.  If the xmlns=... is the last attribute
> you still have to process it before any namespaced attributes.
>
> This says to me that the other API choice is better - do the
> namespace processing and deliver startElementNS in one
> call.

  look at SAX.c function startElement(), I want to clean up that mess
So maybe it's not possible to separate startElement from the namespace 
declarations. Fine, but attributes could still be separated.
  So the Right API might be
    StartElementNs(
           void *ctx,
           const xmlChar *localname;
           int nb_namespaces,          // number of namespace definitions
           const xmlChar **namespaces, // namespaces (prefix/URI pairs)
           const xmlChar *prefix,
           const xmlChar *URI
           )
 Then have separate attributeNs() callbacks
That sounds quite clean to me, actually far better IMHO that the two other
possibilities.

   thanks for the feedback :-)

Daniel

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