FM / compat

/usr/lib/python3/dist-packages/pyasn1/compat/

/usr/lib/python3/dist-packages/pyasn1/compat

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
binary.py	698	0644	edit dl rm
calling.py	379	0644	edit dl rm
dateandtime.py	482	0644	edit dl rm
integer.py	2988	0644	edit dl rm
octets.py	1359	0644	edit dl rm
string.py	505	0644	edit dl rm
__init__.py	59	0644	edit dl rm

Edit: /usr/lib/python3/dist-packages/pyasn1/compat/integer.py (2988B)

#
# This file is part of pyasn1 software.
#
# Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
# License: http://snmplabs.com/pyasn1/license.html
#
import sys

try:
    import platform

implementation = platform.python_implementation()

except (ImportError, AttributeError):
    implementation = 'CPython'

from pyasn1.compat.octets import oct2int, null, ensureString

if sys.version_info[0:2] < (3, 2) or implementation != 'CPython':
    from binascii import a2b_hex, b2a_hex

if sys.version_info[0] > 2:
        long = int

def from_bytes(octets, signed=False):
        if not octets:
            return 0

value = long(b2a_hex(ensureString(octets)), 16)

if signed and oct2int(octets[0]) & 0x80:
            return value - (1 << len(octets) * 8)

return value

def to_bytes(value, signed=False, length=0):
        if value < 0:
            if signed:
                bits = bitLength(value)

# two's complement form
                maxValue = 1 << bits
                valueToEncode = (value + maxValue) % maxValue

else:
                raise OverflowError('can\'t convert negative int to unsigned')
        elif value == 0 and length == 0:
            return null
        else:
            bits = 0
            valueToEncode = value

hexValue = hex(valueToEncode)[2:]
        if hexValue.endswith('L'):
            hexValue = hexValue[:-1]

if len(hexValue) & 1:
            hexValue = '0' + hexValue

# padding may be needed for two's complement encoding
        if value != valueToEncode or length:
            hexLength = len(hexValue) * 4

padLength = max(length, bits)

if padLength > hexLength:
                hexValue = '00' * ((padLength - hexLength - 1) // 8 + 1) + hexValue
            elif length and hexLength - length > 7:
                raise OverflowError('int too big to convert')

firstOctet = int(hexValue[:2], 16)

if signed:
            if firstOctet & 0x80:
                if value >= 0:
                    hexValue = '00' + hexValue
            elif value < 0:
                hexValue = 'ff' + hexValue

octets_value = a2b_hex(hexValue)

return octets_value

def bitLength(number):
        # bits in unsigned number
        hexValue = hex(abs(number))
        bits = len(hexValue) - 2
        if hexValue.endswith('L'):
            bits -= 1
        if bits & 1:
            bits += 1
        bits *= 4
        # TODO: strip lhs zeros
        return bits

else:

def from_bytes(octets, signed=False):
        return int.from_bytes(bytes(octets), 'big', signed=signed)

def to_bytes(value, signed=False, length=0):
        length = max(value.bit_length(), length)

if signed and length % 8 == 0:
            length += 1

return value.to_bytes(length // 8 + (length % 8 and 1 or 0), 'big', signed=signed)

def bitLength(number):
        return int(number).bit_length()

cmd: