[XML-SIG] Skipped entities under SAX

Walter Dörwald walter.doerwald at livinglogic.de
Thu Apr 22 06:26:48 EDT 2004

Derek Fountain wrote:
> I've been exploring the PyXML SAX parser, and I've come across the handler for 
> skipped entities. i.e. the skippedEntity method in the ContentHandler object.
> Puzzlement here. What exactly is a skipped entity? It's not mentioned in the 
> XML spec, as far as I can see. The name suggests that it's an entity which 
> the parser comes across and doesn't know how to handle, so it passes over it. 
> Sort of:
>  This odd &wierdthing; in the text
> where the weirdthing entity isn't declared.
> I'm only guessing the above, and it seems that the expat parser doesn't 
> entertain such ideas. AFAICT, if it comes across an entity which it doesn't 
> recognise, it throws an error.
> So what is a skipped entity, and when would I receive a call to the 
> skippedEntity method in my SAX handler?

For ExpatParser you can overwrite reset like this:

    class ExpatParser(expatreader.ExpatParser):
       def reset(self):

Before parsing you have to call:

    parser.setFeature(handler.feature_external_ges, False)

Then ExpatParser will pass entity references to skippedEntity().

    Walter Dörwald

More information about the XML-SIG mailing list