Function StartElementHandler

xmpsdk/src/ExpatAdapter.cpp:292–344

// =================================================================================================

static void StartElementHandler ( void * userData, XMP_StringPtr name, XMP_StringPtr* attrs )
{
	XMP_Assert ( attrs != 0 );
	ExpatAdapter * thiz = (ExpatAdapter*)userData;
	
	size_t attrCount = 0;
	for ( XMP_StringPtr* a = attrs; *a != 0; ++a ) ++attrCount;
	if ( (attrCount & 1) != 0 )	XMP_Throw ( "Expat attribute info has odd length", kXMPErr_ExternalFailure );
	attrCount = attrCount/2;	// They are name/value pairs.
	
	#if XMP_DebugBuild & DumpXMLParseEvents
		if ( thiz->parseLog != 0 ) {
			PrintIndent ( thiz->parseLog, thiz->elemNesting );
			fprintf ( thiz->parseLog, "StartElement: %s, %d attrs", name, attrCount );
			for ( XMP_StringPtr* attr = attrs; *attr != 0; attr += 2 ) {
				XMP_StringPtr attrName = *attr;
				XMP_StringPtr attrValue = *(attr+1);
				fprintf ( thiz->parseLog, ", %s = \"%s\"", attrName, attrValue );
			}
			fprintf ( thiz->parseLog, "\n" );
		}
	#endif

	XML_Node * parentNode = thiz->parseStack.back();
	XML_Node * elemNode   = new XML_Node ( parentNode, "", kElemNode );
	
	SetQualName ( name, elemNode );
	
	for ( XMP_StringPtr* attr = attrs; *attr != 0; attr += 2 ) {

		XMP_StringPtr attrName = *attr;
		XMP_StringPtr attrValue = *(attr+1);
		XML_Node * attrNode = new XML_Node ( elemNode, "", kAttrNode );

		SetQualName ( attrName, attrNode );
		attrNode->value = attrValue;
		if ( attrNode->name == "xml:lang" ) NormalizeLangValue ( &attrNode->value );
		elemNode->attrs.push_back ( attrNode );

	}
	
	parentNode->content.push_back ( elemNode );
	thiz->parseStack.push_back ( elemNode );
	
	if ( elemNode->name == "rdf:RDF" ) {
		thiz->rootNode = elemNode;
		++thiz->rootCount;
	}
	#if XMP_DebugBuild
		++thiz->elemNesting;
	#endif

}	// StartElementHandler

// =================================================================================================