[XML-SIG] I am confused!.. can I pick someones brains on pars ers?

[James Tauber]

One of the characteristics of XML is that it provides a common syntax
*regardless* of application and so a certain level of processing can be done
that is *not* application specific.

An XML parser or XSLT engine are examples of this.

Typically, however, you want to build application specific objects from your
XML. This can be done in a layered approach with a generic event-firing XML
parser connected to an application specific object builder.

If you look, for example, at the code for PyTREX (at
http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/pytrex/pytrex.py?rev=5.0&conte
nt-type=text/x-cvsweb-markup&cvsroot=pytrex) you'll see a series of handlers
that respond to events from the parser expat by building up application
specific objects.

Hope this helps.

James

> -----Original Message-----
> From: gary cor [mailto:stuff4gary@hotmail.com]
> Sent: Sunday, April 01, 2001 7:52 PM
> To: xml-sig@python.org
> Subject: [XML-SIG] I am confused!.. can I pick someones brains on
> parsers?
> 
> 
> I am just starting doing my first bits of XML application 
> development in 
> python and for the large part am rushing around trying to get 
> to grips with 
> the concepts involved to create applications in publishing 
> for editors.
> 
> It seems to me that there are loads of parsers in python for 
> XML that do the 
> similar things, I wonder if someone could try and explain to 
> me how parsers 
> differ from Dynamic Linking Extensions on a PC or a Macintosh 
> extension 
> files and developing for these systems.  Is it not possible 
> to have one 
> parser for image files (like a image gear DLL), another for 
> dealing with 
> text data, another for XHTML, another for SVG, another for 
> movies, etc...  
> My point being can't parsers be more application specific?  
> And if they are 
> application specific how do I find which ones I should use 
> where and the way 
> each is to be used for its task within its application?
> 
> Kind Regards
> 
> Gary C
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