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import struct
from .varint import write_varint
MAX_UINT64 = (1 << 64) - 1
MAX_INT64 = (1 << 63) - 1
def _byte(b):
return bytes((b, ))
def write_binary_str(text, buf):
text = text.encode('utf-8')
write_binary_bytes(text, buf)
def write_binary_bytes(text, buf):
write_varint(len(text), buf)
buf.write(text)
def write_binary_int(number, buf, fmt):
"""
Writes int from buffer with provided format.
"""
fmt = '<' + fmt
buf.write(struct.pack(fmt, number))
def write_binary_int8(number, buf):
write_binary_int(number, buf, 'b')
def write_binary_int16(number, buf):
write_binary_int(number, buf, 'h')
def write_binary_int32(number, buf):
write_binary_int(number, buf, 'i')
def write_binary_int64(number, buf):
write_binary_int(number, buf, 'q')
def write_binary_uint8(number, buf):
write_binary_int(number, buf, 'B')
def write_binary_uint16(number, buf):
write_binary_int(number, buf, 'H')
def write_binary_uint32(number, buf):
write_binary_int(number, buf, 'I')
def write_binary_uint64(number, buf):
write_binary_int(number, buf, 'Q')
def write_binary_uint128(number, buf):
fmt = '<QQ'
packed = struct.pack(fmt, (number >> 64) & MAX_UINT64, number & MAX_UINT64)
buf.write(packed)
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