Re: [xml] Error handling on a per-parser base

[Daniel Veillard <veillard redhat com>]

On Thu, Oct 28, 2010 at 05:44:03PM +0100, R. Mattes wrote:
> On Thu, 28 Oct 2010 18:27:54 +0200, Daniel Veillard wrote
> > On Mon, Oct 25, 2010 at 09:09:03PM +0000, Ralf Mattes wrote:
> > > Hello list,
> > >
> > > is it possible to register a custom error function per xmlParserCtxtPtr
> > > created by xmlCreatePushParserCtxt? I'd like to parse documents in 
> > > parallel and would need error reporting per parser context. Dispatching
> > > on user_data in the error callback seems inside out.
> >
> >   You can set the ctxt->sax->serror assuming a SAXv2 to set a structured
> > error handler. But in general the disambiguation will be done based 
> > on the context not based on the function.
>
> Hm, I don't seem to understand: what context are you talking about, the
> xmlParserCtxt I created, or the userdata context I provide as the first
> parameter to xmlSetGenericErrorFunc and the like?

  either should work for this :-) By default libxml2 tend to use
the parser context precisely as the data for the default handler.

> > Setting a general 
> > strcutured error handler should then allow this.  But note that some 
> > errors may occur in part of the code where the parsing context may 
> > not be available, and there you won't be able to disambiguate,
>
> Bummer!

  Yeah, if I were to write libxml2 from scratch now I would ban any
global variable, but that's design from 10-13 years ago :-\

Daniel

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