/* * call-seq: * internal_subset * * Get the internal subset */ static VALUE internal_subset(VALUE self) { xmlNodePtr node; xmlDocPtr doc; Data_Get_Struct(self, xmlNode, node); if(!node->doc) return Qnil; doc = node->doc; xmlDtdPtr dtd = xmlGetIntSubset(doc); if(!dtd) return Qnil; return Nokogiri_wrap_xml_node((xmlNodePtr)dtd); }