def Base64WSDecode(s):
"""
Return decoded version of given Base64 string. Ignore whitespace.
Uses URL-safe alphabet: - replaces +, _ replaces /. Will convert s of type
unicode to string type first.
@param s: Base64 string to decode
@type s: string
@return: original string that was encoded as Base64
@rtype: string
@raise Base64DecodingError: If length of string (ignoring whitespace) is one
more than a multiple of four.
"""
s = ''.join(s.splitlines())
s = str(s.replace(" ", "")) # kill whitespace, make string (not unicode)
d = len(s) % 4
if d == 1:
raise errors.Base64DecodingError()
elif d == 2:
s += "=="
elif d == 3:
s += "="
try:
return base64.urlsafe_b64decode(s)
except TypeError:
# Decoding raises TypeError if s contains invalid characters.
raise errors.Base64DecodingError()
def Decode(s):
"""
Return decoded version of given Base64 string. Ignore whitespace.
@param s: Base64 string to decode
@type s: string
@return: original string that was encoded as Base64
@rtype: string
@raise Base64DecodingError: If length of string (ignoring whitespace) is one
more than a multiple of four.
"""
s = str(s.replace(" ", "")) # kill whitespace, make string (not unicode)
d = len(s) % 4
if d == 1:
raise errors.Base64DecodingError()
elif d == 2:
s += "=="
elif d == 3:
s += "="
return base64.b64decode(s)