/*
* call-seq:
* dup
*
* Copy this node. An optional depth may be passed in, but it defaults
* to a deep copy. 0 is a shallow copy, 1 is a deep copy.
*/
static VALUE duplicate_node(int argc, VALUE *argv, VALUE self)
{
VALUE level;
if(rb_scan_args(argc, argv, "01", &level) == 0)
level = INT2NUM(1);
xmlNodePtr node, dup;
Data_Get_Struct(self, xmlNode, node);
dup = xmlDocCopyNode(node, node->doc, NUM2INT(level));
if(dup == NULL) return Qnil;
return Nokogiri_wrap_xml_node(rb_obj_class(self), dup);
}