<s> import json <EOL> from collections import namedtuple <EOL> from . symmetries import ( <EOL> decode_string , encode_string , get_byte , get_character , parse_url ) <EOL> EngineIOSession = namedtuple ( '<STR_LIT>' , [ <EOL> '<STR_LIT:id>' , '<STR_LIT>' , '<STR_LIT>' , '<STR_LIT>' ] ) <EOL> SocketIOData = namedtuple ( '<STR_LIT>' , [ '<STR_LIT:path>' , '<STR_LIT>' , '<STR_LIT:args>' ] ) <EOL> def parse_host ( host , port , resource ) : <EOL> if not host . startswith ( '<STR_LIT:http>' ) : <EOL> host = '<STR_LIT>' + host <EOL> url_pack = parse_url ( host ) <EOL> is_secure = url_pack . scheme == '<STR_LIT>' <EOL> port = port or url_pack . port or ( <NUM_LIT> if is_secure else <NUM_LIT> ) <EOL> url = '<STR_LIT>' % ( url_pack . hostname , port , url_pack . path , resource ) <EOL> return is_secure , url <EOL> def parse_engineIO_session ( engineIO_packet_data ) : <EOL> d = json . loads ( decode_string ( engineIO_packet_data ) ) <EOL> return EngineIOSession ( <EOL> id = d [ '<STR_LIT>' ] , <EOL> ping_interval = d [ '<STR_LIT>' ] / float ( <NUM_LIT:1000> ) , <EOL> ping_timeout = d [ '<STR_LIT>' ] / float ( <NUM_LIT:1000> ) , <EOL> transport_upgrades = d [ '<STR_LIT>' ] ) <EOL> def encode_engineIO_content ( engineIO_packets ) : <EOL> content = bytearray ( ) <EOL> for packet_type , packet_data in engineIO_packets : <EOL> packet_text = format_packet_text ( packet_type , packet_data ) <EOL> content . extend ( _make_packet_prefix ( packet_text ) + packet_text ) <EOL> return content <EOL> def decode_engineIO_content ( content ) : <EOL> content_index = <NUM_LIT:0> <EOL> content_length = len ( content ) <EOL> while content_index < content_length : <EOL> try : <EOL> content_index , packet_length = _read_packet_length ( <EOL> content , content_index ) <EOL> except IndexError : <EOL> break <EOL> content_index , packet_text = _read_packet_text ( <EOL> content , content_index , packet_length ) <EOL> engineIO_packet_type , engineIO_packet_data = parse_packet_text ( <EOL> packet_text ) <EOL> yield engineIO_packet_type , engineIO_packet_data <EOL> def format_socketIO_packet_data ( path = None , ack_id = None , args = None ) : <EOL> socketIO_packet_data = json . dumps ( args , ensure_ascii = False ) if args else '<STR_LIT>' <EOL> if ack_id is not None : <EOL> socketIO_packet_data = str ( ack_id ) + socketIO_packet_data <EOL> if path : <EOL> socketIO_packet_data = path + '<STR_LIT:U+002C>' + socketIO_packet_data <EOL> return socketIO_packet_data <EOL> def parse_socketIO_packet_data ( socketIO_packet_data ) : <EOL> data = decode_string ( socketIO_packet_data ) <EOL> if data . startswith ( '<STR_LIT:/>' ) : <EOL> try : <EOL> path , data = data . split ( '<STR_LIT:U+002C>' , <NUM_LIT:1> ) <EOL> except ValueError : <EOL> path = data <EOL> data = '<STR_LIT>' <EOL> else : <EOL> path = '<STR_LIT>' <EOL> try : <EOL> ack_id_string , data = data . split ( '<STR_LIT:[>' , <NUM_LIT:1> ) <EOL> data = '<STR_LIT:[>' + data <EOL> ack_id = int ( ack_id_string ) <EOL> except ( ValueError , IndexError ) : <EOL> ack_id = None <EOL> try : <EOL> args = json . loads ( data ) <EOL> except ValueError : <EOL> args = [ ] <EOL> return SocketIOData ( path = path , ack_id = ack_id , args = args ) <EOL> def format_packet_text ( packet_type , packet_data ) : <EOL> return encode_string ( str ( packet_type ) + packet_data ) <EOL> def parse_packet_text ( packet_text ) : <EOL> packet_type = int ( get_character ( packet_text , <NUM_LIT:0> ) ) <EOL> packet_data = packet_text [ <NUM_LIT:1> : ] <EOL> return packet_type , packet_data <EOL> def get_namespace_path ( socketIO_packet_data ) : <EOL> if not socketIO_packet_data . startswith ( b'<STR_LIT:/>' ) : <EOL> return '<STR_LIT>' <EOL> parts = [ ] <EOL> for i in range ( len ( socketIO_packet_data ) ) : <EOL> character = get_character ( socketIO_packet_data , i ) <EOL> if '<STR_LIT:U+002C>' == character : <EOL> break <EOL> parts . append ( character ) <EOL> return '<STR_LIT>' . join ( parts ) <EOL> def _make_packet_prefix ( packet ) : <EOL> length_string = str ( len ( packet ) ) <EOL> header_digits = bytearray ( [ <NUM_LIT:0> ] ) <EOL> for i in range ( len ( length_string ) ) : <EOL> header_digits . append ( ord ( length_string [ i ] ) - <NUM_LIT> ) <EOL> header_digits . append ( <NUM_LIT:255> ) <EOL> return header_digits <EOL> def _read_packet_length ( content , content_index ) : <EOL> while get_byte ( content , content_index ) != <NUM_LIT:0> : <EOL> content_index += <NUM_LIT:1> <EOL> content_index += <NUM_LIT:1> <EOL> packet_length_string = '<STR_LIT>' <EOL> byte = get_byte ( content , content_index ) <EOL> while byte != <NUM_LIT:255> : <EOL> packet_length_string += str ( byte ) <EOL> content_index += <NUM_LIT:1> <EOL> byte = get_byte ( content , content_index ) <EOL> return content_index , int ( packet_length_string ) <EOL> def _read_packet_text ( content , content_index , packet_length ) : <EOL> while get_byte ( content , content_index ) == <NUM_LIT:255> : <EOL> content_index += <NUM_LIT:1> <EOL> packet_text = content [ content_index : content_index + packet_length ] <EOL> return content_index + packet_length , packet_text </s>
