Last active
September 24, 2016 15:01
-
-
Save job/52048d13f32ba12a1bc491a39bfb9eff to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/usr/bin/env python | |
import re | |
regex_from_hell = """^([0-9]|[1-8][0-9]|9[0-9]|[1-8][0-9]{2}|9[0-8][0-9]|99[0-9]|[1-8][0-9]{3}|9[0-8][0-9]{2}|99[0-8][0-9]|999[0-9]|[1-8][0-9]{4}|9[0-8][0-9]{3}|99[0-8][0-9]{2}|999[0-8][0-9]|9999[0-9]|[1-8][0-9]{5}|9[0-8][0-9]{4}|99[0-8][0-9]{3}|999[0-8][0-9]{2}|9999[0-8][0-9]|99999[0-9]|[1-8][0-9]{6}|9[0-8][0-9]{5}|99[0-8][0-9]{4}|999[0-8][0-9]{3}|9999[0-8][0-9]{2}|99999[0-8][0-9]|999999[0-9]|[1-8][0-9]{7}|9[0-8][0-9]{6}|99[0-8][0-9]{5}|999[0-8][0-9]{4}|9999[0-8][0-9]{3}|99999[0-8][0-9]{2}|999999[0-8][0-9]|9999999[0-9]|[1-8][0-9]{8}|9[0-8][0-9]{7}|99[0-8][0-9]{6}|999[0-8][0-9]{5}|9999[0-8][0-9]{4}|99999[0-8][0-9]{3}|999999[0-8][0-9]{2}|9999999[0-8][0-9]|99999999[0-9]|[1-3][0-9]{9}|4[01][0-9]{8}|42[0-8][0-9]{7}|429[0-3][0-9]{6}|4294[0-8][0-9]{5}|42949[0-5][0-9]{4}|429496[0-6][0-9]{3}|4294967[01][0-9]{2}|42949672[0-8][0-9]|429496729[0-5]):([0-9]|[1-8][0-9]|9[0-9]|[1-8][0-9]{2}|9[0-8][0-9]|99[0-9]|[1-8][0-9]{3}|9[0-8][0-9]{2}|99[0-8][0-9]|999[0-9]|[1-8][0-9]{4}|9[0-8][0-9]{3}|99[0-8][0-9]{2}|999[0-8][0-9]|9999[0-9]|[1-8][0-9]{5}|9[0-8][0-9]{4}|99[0-8][0-9]{3}|999[0-8][0-9]{2}|9999[0-8][0-9]|99999[0-9]|[1-8][0-9]{6}|9[0-8][0-9]{5}|99[0-8][0-9]{4}|999[0-8][0-9]{3}|9999[0-8][0-9]{2}|99999[0-8][0-9]|999999[0-9]|[1-8][0-9]{7}|9[0-8][0-9]{6}|99[0-8][0-9]{5}|999[0-8][0-9]{4}|9999[0-8][0-9]{3}|99999[0-8][0-9]{2}|999999[0-8][0-9]|9999999[0-9]|[1-8][0-9]{8}|9[0-8][0-9]{7}|99[0-8][0-9]{6}|999[0-8][0-9]{5}|9999[0-8][0-9]{4}|99999[0-8][0-9]{3}|999999[0-8][0-9]{2}|9999999[0-8][0-9]|99999999[0-9]|[1-3][0-9]{9}|4[01][0-9]{8}|42[0-8][0-9]{7}|429[0-3][0-9]{6}|4294[0-8][0-9]{5}|42949[0-5][0-9]{4}|429496[0-6][0-9]{3}|4294967[01][0-9]{2}|42949672[0-8][0-9]|429496729[0-5]):([0-9]|[1-8][0-9]|9[0-9]|[1-8][0-9]{2}|9[0-8][0-9]|99[0-9]|[1-8][0-9]{3}|9[0-8][0-9]{2}|99[0-8][0-9]|999[0-9]|[1-8][0-9]{4}|9[0-8][0-9]{3}|99[0-8][0-9]{2}|999[0-8][0-9]|9999[0-9]|[1-8][0-9]{5}|9[0-8][0-9]{4}|99[0-8][0-9]{3}|999[0-8][0-9]{2}|9999[0-8][0-9]|99999[0-9]|[1-8][0-9]{6}|9[0-8][0-9]{5}|99[0-8][0-9]{4}|999[0-8][0-9]{3}|9999[0-8][0-9]{2}|99999[0-8][0-9]|999999[0-9]|[1-8][0-9]{7}|9[0-8][0-9]{6}|99[0-8][0-9]{5}|999[0-8][0-9]{4}|9999[0-8][0-9]{3}|99999[0-8][0-9]{2}|999999[0-8][0-9]|9999999[0-9]|[1-8][0-9]{8}|9[0-8][0-9]{7}|99[0-8][0-9]{6}|999[0-8][0-9]{5}|9999[0-8][0-9]{4}|99999[0-8][0-9]{3}|999999[0-8][0-9]{2}|9999999[0-8][0-9]|99999999[0-9]|[1-3][0-9]{9}|4[01][0-9]{8}|42[0-8][0-9]{7}|429[0-3][0-9]{6}|4294[0-8][0-9]{5}|42949[0-5][0-9]{4}|429496[0-6][0-9]{3}|4294967[01][0-9]{2}|42949672[0-8][0-9]|429496729[0-5])$""" | |
r = re.compile(regex_from_hell) | |
# key = community, value = expected result | |
examples = { | |
"2914:0:0": True, | |
":0:0": False, | |
"2914::0": False, | |
"2914:4294967295:4294967295": True, | |
"2914:4294967295:5294967295": False, | |
"4294967295:0:0": True, | |
"4294967295:00:0": False, | |
"2914:-1:0": False, | |
"1:2:03": False, | |
"1:02:03": False, | |
"01:2:3": False, | |
"2914:666:666": True | |
} | |
for example in examples.keys(): | |
m = False | |
print "%s | " % example, | |
if r.match(example): | |
print "True" | |
m = True | |
else: | |
print "False" |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment