def modify(packet_gen, commit_func):
packet_buf = []
for packet in packet_gen('-'):
for byte in packet.data:
if byte >= 0x80:
packet_template = Packet(packet.hdr, packet.datapack[:64] + array('c', ''.join(map(chr, packet_buf))))
packet_template.length = len(packet_template.data)
packet_template.len_cap = len(packet_template.data)
commit_func(packet_template)
packet_buf = []
packet_buf.append(byte)
else:
packet_buf.append(byte)
