Function RDF_NodeElementAttrs

xmpsdk/src/ParseRDF.cpp:729–774

static const XMP_OptionBits kExclusiveAttrMask = (kRDFMask_ID | kRDFMask_nodeID | kRDFMask_about);

static void
RDF_NodeElementAttrs ( XMP_Node * xmpParent, const XML_Node & xmlNode, bool isTopLevel )
{
	XMP_OptionBits exclusiveAttrs = 0;	// Used to detect attributes that are mutually exclusive.

	XML_cNodePos currAttr = xmlNode.attrs.begin();
	XML_cNodePos endAttr  = xmlNode.attrs.end();

	for ( ; currAttr != endAttr; ++currAttr ) {

		RDFTermKind attrTerm = GetRDFTermKind ( (*currAttr)->name );

		switch ( attrTerm ) {

			case kRDFTerm_ID     :
			case kRDFTerm_nodeID :
			case kRDFTerm_about  :

				if ( exclusiveAttrs & kExclusiveAttrMask ) XMP_Throw ( "Mutally exclusive about, ID, nodeID attributes", kXMPErr_BadRDF );
				exclusiveAttrs |= (1 << attrTerm);

				if ( isTopLevel && (attrTerm == kRDFTerm_about) ) {
					// This is the rdf:about attribute on a top level node. Set the XMP tree name if
					// it doesn't have a name yet. Make sure this name matches the XMP tree name.
					XMP_Assert ( xmpParent->parent == 0 );	// Must be the tree root node.
					if ( xmpParent->name.empty() ) {
						xmpParent->name = (*currAttr)->value;
					} else if ( ! (*currAttr)->value.empty() ) {
						if ( xmpParent->name != (*currAttr)->value ) XMP_Throw ( "Mismatched top level rdf:about values", kXMPErr_BadXMP );
					}
				}

				break;

			case kRDFTerm_Other :
				AddChildNode ( xmpParent, **currAttr, (*currAttr)->value.c_str(), isTopLevel );
				break;

			default :
				XMP_Throw ( "Invalid nodeElement attribute", kXMPErr_BadRDF );

		}

	}

}	// RDF_NodeElementAttrs


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