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Re: nestable C/C++ parser

• From: "Arnold, Curt" <Curt.Arnold@h...>
• To: "'xml-dev@i...'" <xml-dev@i...>
• Date: Thu, 9 Dec 1999 08:53:46 -0700

I think your original request got lost in a side track.  If is very possible
to do what you want with expat.  The trick is the use of the XML_SetUserData
and the userdata argument.  Basically, the trick is to create a base class
that has methods that you want to change the behavior of (typically,
StartElement and EndElement).  Create derived classes for each different
behavior that you want.  Call XML_SetUserData to the initial handler object.
In your StartElement callback, cast the userdata argument up to a pointer to
your base class and call its startElement virtual method.  If you want to
change the handler, make another call to XML_SetUserData.

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