/* * call-seq: * root= * * Set the root element on this document */ static VALUE set_root(VALUE self, VALUE root) { xmlDocPtr doc; xmlNodePtr new_root; xmlNodePtr old_root; Data_Get_Struct(self, xmlDoc, doc); old_root = NULL; if(NIL_P(root)) { old_root = xmlDocGetRootElement(doc); if(old_root) { xmlUnlinkNode(old_root); nokogiri_root_node(old_root); } return root; } Data_Get_Struct(root, xmlNode, new_root); /* If the new root's document is not the same as the current document, * then we need to dup the node in to this document. */ if(new_root->doc != doc) { old_root = xmlDocGetRootElement(doc); if (!(new_root = xmlDocCopyNode(new_root, doc, 1))) { rb_raise(rb_eRuntimeError, "Could not reparent node (xmlDocCopyNode)"); } } xmlDocSetRootElement(doc, new_root); if(old_root) nokogiri_root_node(old_root); return root; }