mbirth/ninty-codes
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Better display of charsets.

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Markus Birth 2020-02-22 19:41:48 +01:00
parent 1e12ff6a0b
commit 3d9c403f99
Signed by: mbirth
GPG Key ID: A9928D7A098C3A9A
1 changed files with 11 additions and 2 deletions
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ninty-codes.py
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@ -22,6 +22,7 @@ EXAMPLE_CODES = [
'B0GLFY1H1QR5GGDT', 'B0GLFY1H1QR5GGDT',
'B0K777732YWS7XVF', 'B0K777732YWS7XVF',
'B0QFT5QX0F2XMF3Q', 'B0QFT5QX0F2XMF3Q',
'B0S0W8RT3QBSRHK9',
'B0TTY433034MJ8FY', 'B0TTY433034MJ8FY',
'B14WC53G32Y9VWVX', 'B14WC53G32Y9VWVX',
'B14CP5QN168XKTXR', 'B14CP5QN168XKTXR',
@ -66,6 +67,8 @@ EXAMPLE_CODES = [
'C080M7YW8XLRMTXK', 'C080M7YW8XLRMTXK',
] ]
CHARSET = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'
def safe2real(code: str): def safe2real(code: str):
"""Converts a code with unambiguous characters to the real code""" """Converts a code with unambiguous characters to the real code"""
code = code.upper() code = code.upper()
@ -80,7 +83,7 @@ def generateChecksum(base_code):
raise RuntimeError("Bad argument to checksum") raise RuntimeError("Bad argument to checksum")
# Mystery/bug: Why is this ord('7') in particular? 55, 0o55 and 0x55 are all unrelated to anything in base 33. The check looks like it's trying to do c - 'A', but does the weirdest thing instead. # Mystery/bug: Why is this ord('7') in particular? 55, 0o55 and 0x55 are all unrelated to anything in base 33. The check looks like it's trying to do c - 'A', but does the weirdest thing instead.
cksum = reduce(lambda cksum, c: (cksum + (ord(c) - ord('0') if ord(c) <= ord('9') else ord(c) - ord('7'))) % 33, base_code, 0) cksum = reduce(lambda cksum, c: (cksum + (ord(c) - ord('0') if ord(c) <= ord('9') else ord(c) - ord('7'))) % 33, base_code, 0)
return '0123456789ABCDEFGHIJKLMNOPQRSTUVW'[cksum] return CHARSET[cksum]
def validate(code): def validate(code):
if len(code) != 16: return False if len(code) != 16: return False
@ -148,4 +151,10 @@ if __name__ == '__main__':
parse(s) parse(s)
for ct, cc in seen_chars.items(): for ct, cc in seen_chars.items():
cc = sorted(list(cc)) cc = sorted(list(cc))
print('Found characters in type {} codes: {}'.format(ct, "".join(cc))) print('Found characters in type {} codes: '.format(ct), end='')
for c in CHARSET:
if c in cc:
print(c, end='')
else:
print('-', end='')
print()