micropython-lib/python-stdlib/gzip/gzip.py

30 wiersze
551 B
Python

# import zlib
import uzlib as zlib
FTEXT = 1
FHCRC = 2
FEXTRA = 4
FNAME = 8
FCOMMENT = 16
def decompress(data):
assert data[0] == 0x1F and data[1] == 0x8B
assert data[2] == 8
flg = data[3]
assert flg & 0xE0 == 0
i = 10
if flg & FEXTRA:
i += data[11] << 8 + data[10] + 2
if flg & FNAME:
while data[i]:
i += 1
i += 1
if flg & FCOMMENT:
while data[i]:
i += 1
i += 1
if flg & FHCRC:
i += 2
return zlib.decompress(memoryview(data)[i:], -15)