from common import *

def gen_nodelist(root):
	nodenames = []
	for node in root.nodes:
			nodenames.append(node.name)
	nodenames.sort()
	return "\n".join(nodenames)

if __name__ == "__main__":
	nodes = xml_to_obj_hierarchy(sys.argv[1])
	ready_nodes_dtd_hierarchy(nodes)
	print gen_nodelist(nodes)