wayne at schlitt
Sep 1, 2006, 12:18 PM
Post #15 of 24
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In <Pine.LNX.4.44.0609011357080.32489-100000 [at] bmsred> "Stuart D. Gathman" <stuart [at] bmsi> writes:
> On Fri, 1 Sep 2006, Stuart D. Gathman wrote:
>
>> On Fri, 1 Sep 2006, wayne wrote:
>>
>> > I could translate the above abnf to a regex, if anyone *really*
>> > cares...
>
> The abnf Ruby module doesn't seem to be available anymore. All the
> links I can find give 404 for the download.
:-<
I sent email to the author and asked what's up. I still have a copy
of the tarball, so maybe I'll host it if he no longer wants to.
>> I care, and came up with the following regex manually for pyspf:
>>
>> PAT_IP4 = r'\.'.join([r'(?:\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])']*4)+'$'
>> HEXSEQ = r'(?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)'
>> RE_IP6 = re.compile(
>> r'%s?(?:::)?%s?(?::%s)?'%(HEXSEQ,HEXSEQ,PAT_IP4),re.IGNORECASE)
>>
>> Seems rather complex. Is yours simpler?
lol
you must not remember the regular expressions I posted a while back (a
year ago?) that would match SPF records.
No, the converted stuff is *not* simplier. Mind you, once it is
compiled, I doubt there is any significant speed differences. Here it
is, slightly munged:
(wayne [at] footbon) $ ruby range_abnf.rb 2>/dev/null | convert_re
^::|
([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4}|
([0-9A-Fa-f]{1,4}:){1,8}:|
([0-9A-Fa-f]{1,4}:){7}:[0-9A-Fa-f]{1,4}|
([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}){1,2}|
([0-9A-Fa-f]{1,4}:){5}(:[0-9A-Fa-f]{1,4}){1,3}|
([0-9A-Fa-f]{1,4}:){4}(:[0-9A-Fa-f]{1,4}){1,4}|
([0-9A-Fa-f]{1,4}:){3}(:[0-9A-Fa-f]{1,4}){1,5}|
([0-9A-Fa-f]{1,4}:){2}(:[0-9A-Fa-f]{1,4}){1,6}|
[0-9A-Fa-f]{1,4}:(:[0-9A-Fa-f]{1,4}){1,7}|
:(:[0-9A-Fa-f]{1,4}){1,8}|
([0-9A-Fa-f]{1,4}:){6}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])|
([0-9A-Fa-f]{1,4}:){6}:([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])|
([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])|
([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])|
([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])|
([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])|
[0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])|
::([0-9A-Fa-f]{1,4}:){0,6}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.
([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$
-wayne
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