[xml] How to auto-validate against DTD or schema?

["Parag Chandra" <pchandra slickedit com>]

Hi,

I've been using libxml2 to validate against DTDs thus far, by passing
the XML_PARSE_DTDVALID flag when I construct an xmlReader. Now I need to
do so against schemas, and I can't seem to figure out how to do it short
of explicitly passing the name of the schema to validate against to the
xmlSchema* APIs. This would require knowing the name of the schema ahead
of time, which I do not. Is there some way to automatically validate
against either a DTD or schema, depending on which is present in the XML
document? Thanks.

-Parag