Can anyone help me with registering RELAX NG validity error callback
functions?
I'm using the C RELAX NG API with xmlTextReader. I'm trying to
register error callback functions for validity errors encoundtered in
my *instance* document. I seem to be able to register handlers for
all types of errors when parsing my RNG schema, and also well-
formedness errors in my instance document. I can't seem to register
error callbacks for *validity* errors in my instance doc as mandated
by my RNG schema.
What's weird is that I do see these errors being reported to the
console! These are the errors I want to receive in my C callbacks,
but I can't find any way to register for them. Can anyone help? I've
tried scouring xmllint.c for examples, but I just don't see where
this happens. Other than that, I can't find any examples online.
Here's what I'm doing:
char *docfurl = ".../golf.xml";
char *schemafurl = ".../golf.rng";
// RELAX NG Parser Context
xmlRelaxNGParserCtxtPtr ctxt = xmlRelaxNGNewParserCtxt(schemafurl);
xmlRelaxNGSetParserErrors(ctxt,
(xmlRelaxNGValidityErrorFunc)rngErr,
(xmlRelaxNGValidityWarningFunc)rngWarn,
NULL);
// Parse schema
xmlRelaxNGPtr schema = xmlRelaxNGParse(ctxt);
// create reader
xmlTextReaderPtr reader = xmlNewTextReaderFilename(docfurl);
// associtate schema with reader
xmlTextReaderRelaxNGSetSchema(reader, schema);
// register some callbacks (apparently not the right ones)
// never seems to be called
xmlTextReaderSetErrorHandler(reader, (xmlTextReaderErrorFunc)
readerErr, NULL);
// handles well-formedness errors in instance document
xmlTextReaderSetStructuredErrorHandler(reader,
(xmlStructuredErrorFunc)structErr, NULL);
while (xmlTextReaderRead(reader))
;
NSLog(@"done. isValid: %i", xmlTextReaderIsValid(reader));
The callbacks you see registered here are usually called for
different things, but none for validity errors in the instance doc
caused by non-adherence to my RNG.
The reader *does* correctly report whether it was valid or not at the
end, which is good... but I want to receive the individual validity
errors too.
Can anyone help?
Todd Ditchendorf
Scandalous Software - Cocoa Developer Tools
http://scan.dalo.us
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