def top_key_tuple_to_bytes(top_key_tuple, salt_byte=0):
""" Returns a binary representation of top_key_tuple. """
ret = struct.pack(BASE_FMT, HDR_BYTES, salt_byte,
len(top_key_tuple[0]), len(top_key_tuple[1]))
for graph_chk in top_key_tuple[0]:
ret += chk_to_bytes(graph_chk)
# Can't find doc. True for all modern Python
assert int(True) == 1 and int(False) == 0
for update in top_key_tuple[1]:
flags = (((int(update[4]) * 0xff) & HAS_PARENTS)
| ((int(update[5]) * 0xff) & HAS_HEADS))
ret += struct.pack(BASE_UPDATE_FMT,
update[0], flags,
len(update[1]), len(update[2]),
len(update[3]))
ret += versions_to_bytes(update[1]) # parents
ret += versions_to_bytes(update[2]) # heads
for chk in update[3]:
chk_bytes = chk_to_bytes(chk)
assert len(chk_bytes) == CHK_SIZE
ret += chk_bytes
return ret
def top_key_tuple_to_bytes(top_key_tuple, salt_byte=0):
""" Returns a binary representation of top_key_tuple. """
ret = struct.pack(BASE_FMT, HDR_BYTES, salt_byte, len(top_key_tuple[0]),
len(top_key_tuple[1]))
for graph_chk in top_key_tuple[0]:
ret += chk_to_bytes(graph_chk)
# Can't find doc. True for all modern Python
assert int(True) == 1 and int(False) == 0
for update in top_key_tuple[1]:
flags = (((int(update[4]) * 0xff) & HAS_PARENTS)
| ((int(update[5]) * 0xff) & HAS_HEADS))
ret += struct.pack(BASE_UPDATE_FMT, update[0], flags, len(update[1]),
len(update[2]), len(update[3]))
ret += versions_to_bytes(update[1]) # parents
ret += versions_to_bytes(update[2]) # heads
for chk in update[3]:
chk_bytes = chk_to_bytes(chk)
assert len(chk_bytes) == CHK_SIZE
ret += chk_bytes
return ret
def top_key_tuple_to_bytes(values, salt_byte=0):
""" Reads the binary rep of an archive top key. """
ret = struct.pack(BASE_FMT, HDR_BYTES, salt_byte, values[2],
len(values[0]), len(values[1]))
for block in values[0]:
ret += struct.pack(BLOCK_BASE_FMT, block[0], block[2], len(block[1]))
for chk in block[1]:
ret += chk_to_bytes(chk)
for obj in values[1]:
ret += struct.pack(ROOT_OBJ_FMT, obj[0], obj[1])
return ret
def top_key_tuple_to_bytes(values, salt_byte=0):
""" Reads the binary rep of an archive top key. """
ret = struct.pack(BASE_FMT, HDR_BYTES,
salt_byte,
values[2],
len(values[0]),
len(values[1]))
for block in values[0]:
ret += struct.pack(BLOCK_BASE_FMT,
block[0], block[2], len(block[1]))
for chk in block[1]:
ret += chk_to_bytes(chk)
for obj in values[1]:
ret += struct.pack(ROOT_OBJ_FMT,
obj[0],
obj[1])
return ret
