view bin/rot13 @ 11111:ea74d235ff72

<oerjan> ` mv bin/rot13{_stdin,}
author HackBot
date Sat, 22 Jul 2017 00:40:56 +0000
parents 0aef5f39601f
children 6412d84cf279
line wrap: on
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#!/usr/bin/env python

import re, sys, unicodedata as U
def tr(c):
    m = re.match(r'(.*\bLATIN\b.*\bLETTER )([A-Z])\b(.*)', U.name(c, ''))
    if m:
        p, q, r = m.groups()
        n = ord(q) - ord('A')
        try:
            return U.lookup(p + chr(ord('A') + (n + 13) % 26) + r)
        except KeyError:
            return c
    return c

def tr2(c):
    d = tr(c)
    if d != c:
        return d
    else:
        cs = [unichr(int(x, 16)) for x in U.decomposition(c).split()]
        ds = [tr(x) for x in cs]
        if cs != ds:
            return u''.join(ds)
        else:
            return c

for c in unicode(sys.stdin.read(), 'utf8'):
    sys.stdout.write(tr2(c).encode('utf8'))