95 lines
2.3 KiB
Python
95 lines
2.3 KiB
Python
"""Encoding."""
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# standard
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import re
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# local
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from .utils import validator
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@validator
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def base16(value: str, /):
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"""Return whether or not given value is a valid base16 encoding.
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Examples:
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>>> base16('a3f4b2')
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True
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>>> base16('a3f4Z1')
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ValidationError(func=base16, args={'value': 'a3f4Z1'})
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Args:
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value:
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base16 string to validate.
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Returns:
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(Literal[True]): If `value` is a valid base16 encoding.
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(ValidationError): If `value` is an invalid base16 encoding.
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"""
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return re.match(r"^[0-9A-Fa-f]+$", value) if value else False
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@validator
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def base32(value: str, /):
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"""Return whether or not given value is a valid base32 encoding.
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Examples:
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>>> base32('MFZWIZLTOQ======')
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True
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>>> base32('MfZW3zLT9Q======')
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ValidationError(func=base32, args={'value': 'MfZW3zLT9Q======'})
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Args:
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value:
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base32 string to validate.
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Returns:
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(Literal[True]): If `value` is a valid base32 encoding.
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(ValidationError): If `value` is an invalid base32 encoding.
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"""
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return re.match(r"^[A-Z2-7]+=*$", value) if value else False
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@validator
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def base58(value: str, /):
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"""Return whether or not given value is a valid base58 encoding.
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Examples:
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>>> base58('14pq6y9H2DLGahPsM4s7ugsNSD2uxpHsJx')
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True
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>>> base58('cUSECm5YzcXJwP')
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True
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Args:
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value:
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base58 string to validate.
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Returns:
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(Literal[True]): If `value` is a valid base58 encoding.
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(ValidationError): If `value` is an invalid base58 encoding.
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"""
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return re.match(r"^[1-9A-HJ-NP-Za-km-z]+$", value) if value else False
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@validator
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def base64(value: str, /):
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"""Return whether or not given value is a valid base64 encoding.
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Examples:
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>>> base64('Y2hhcmFjdGVyIHNldA==')
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True
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>>> base64('cUSECm5YzcXJwP')
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ValidationError(func=base64, args={'value': 'cUSECm5YzcXJwP'})
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Args:
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value:
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base64 string to validate.
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Returns:
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(Literal[True]): If `value` is a valid base64 encoding.
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(ValidationError): If `value` is an invalid base64 encoding.
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"""
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return (
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re.match(r"^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$", value)
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if value
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else False
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)
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