Function xmlXPathLeading

ThirdParty/libxml2/vtklibxml2/xpath.c:3770–3780

* xmlXPathLeading: * @nodes1: a node-set * @nodes2: a node-set * * Implements the EXSLT - Sets leading() function: * node-set set:leading (node-set, node-set) * @nodes1 and @nodes2 are sorted by document order, then * #exslSetsLeadingSorted is called. * * Returns the nodes in @nodes1 that precede the first node in @nodes2 * in document order, @nodes1 if @nodes2 is NULL or em

 *         an empty node-set if @nodes1 doesn't contain @nodes2
 */
xmlNodeSetPtr
xmlXPathLeading (xmlNodeSetPtr nodes1, xmlNodeSetPtr nodes2) {
    if (xmlXPathNodeSetIsEmpty(nodes2))
	return(nodes1);
    if (xmlXPathNodeSetIsEmpty(nodes1))
	return(xmlXPathNodeSetCreate(NULL));
    xmlXPathNodeSetSort(nodes1);
    xmlXPathNodeSetSort(nodes2);
    return(xmlXPathNodeLeadingSorted(nodes1,
				     xmlXPathNodeSetItem(nodes2, 1)));
}

/**
 * xmlXPathNodeTrailingSorted: