68 lines
1.3 KiB
Python
68 lines
1.3 KiB
Python
from flask import abort
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def base36encode(number, alphabet='0123456789abcdefghijklmnopqrstuvwxyz'):
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"""Converts an integer to a base36 string."""
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if not isinstance(number, int):
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raise TypeError('number must be an integer')
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base36 = ''
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sign = ''
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if number < 0:
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sign = '-'
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number = -number
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if 0 <= number < len(alphabet):
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return sign + alphabet[number]
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while number != 0:
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number, i = divmod(number, len(alphabet))
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base36 = alphabet[i] + base36
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return sign + base36
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def base36decode(number):
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try:
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return int(str(number), 36)
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except ValueError:
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abort(400)
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def base_encode(number, base):
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alphabet = '0123456789abcdefghijklmnopqrstuvwxyz'[0:base]
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output = ''
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sign = ''
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if number < 0:
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sign = '-'
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number = -number
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if 0 <= number < len(alphabet):
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return sign + alphabet[number]
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while number != 0:
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number, i = divmod(number, len(alphabet))
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output = alphabet[i] + output
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return sign + output
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#got this one from stackoverflow
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def hex2bin(hexstr):
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value = int(hexstr, 16)
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bindigits = []
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# Seed digit: 2**0
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digit = (value % 2)
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value //= 2
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bindigits.append(digit)
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while value > 0:
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# Next power of 2**n
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digit = (value % 2)
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value //= 2
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bindigits.append(digit)
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return ''.join([str(d) for d in bindigits]) |