def encode_short_channel_id(short_channel_id):
values = short_channel_id.split("x")
assert len(values) == 3, "not a short_channel_id string"
try:
block_height = int(values[0])
tx_index = int(values[1])
output_index = int(values[2])
except:
assert False, "not a short_channel_id string"
return i2b(block_height, 3) + i2b(tx_index, 3) + i2b(output_index, 2)
def encode(val):
assert val <= 0xffffffffffffffff, "cannot encode bigger than uint64"
if val < 0xfd:
return i2b(val, 1)
if val < 0x10000:
return i2b(0xfd, 1) + i2b(val, 2)
if val < 0x100000000:
return i2b(0xfe, 1) + i2b(val, 4)
else:
return i2b(0xff, 1) + i2b(val, 8)
def encode_u64(value):
return i2b(value, 8)
def encode_u32(value):
return i2b(value, 4)
def encode_u16(value):
return i2b(value, 2)
def encode_u8(value):
return i2b(value, 1)
def encode_tu(value):
n_bytes = Namespace.minimal_tu_bytes(value)
if n_bytes == 0:
return b''
return i2b(value, n_bytes)