Re: [Xmltv-devel] expat parsing

[K. L. D. V. H. <le...@ka...>]

On Tue, Apr 16, 2002 at 12:08:07PM +0100, Edward Avis wrote:
> 
> Looks useful.  Can you make it so it has the same interface as the
> existing XMLTV.pm, and some documentation?  (You might want to get the
> 0.5pre2 release, or check out the CVS tree, to look at the pod
> documentation recently added to XMLTV.pm.)
> 
> Is this an interface for reading the XMLTV file lazily, or all at once?
> 
> If you can make it work the same way as XMLTV.pm (but faster) then I can
> just drop it in and run 'make test' to check everything still works.
> 

The interface is a callback mechanism mainly so that small pieces,
rather than the entire DOM, must reside in memory.  Obviously there
are possibilities for molding that interface, but I think the
interface must be refined to gain the benefits of using Twig.  Also,
another layer seems necessary in the interface to support DOM, tree,
and other XML processing/storage systems.

To be more specific, the program listing retrieval is based on
callbacks.  The channels are kept in memory by the XMLTV_Twig object.

Currently the document creation interface is non-existant in my
rewrite.  I will need to write that to support the remaining bulk of
the functionality in XMLTV.pm.  I get around using such a interface in
tv_pick by allowing the parser to write out twigs based on the
callback return value.

-Leif