"Micheal Espinola Jr" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I'll post them here for now. I was really hoping to have
> properly comment them, because some of the things I am going you may not
> want to - or cant without modification.
Thanks so much for the RegExs! They are a great addition. I was reading
through the first validFormatHeloRe however, and was a little confused by
it.
> ^(([a-z]|\d(?!\d*\.\b))((([a-z\d)]|-(?!-\b)){0,61})[a-z\d])?\.)+(biz|com|edu|gov|info|int|mil|name|net|org|pro|aero|cat|coop|jobs|museum|travel|au|ca|eu|uk|us)\.?$#
> second-level domain name (strict)
If I break it down, I can see the following (I'm going to ignore the last
parameter which is just the different TLDs)
^( ([a-z]|\d(?!\d*\.\b)) :: (any character) or (digit not followed by a
digit, a . or the end of a word)
( ( ( [a-z\d]|-(?!-\b) ){0,61})[a-z\d])?\.) :: a character or digit or
hyphen not followed by another hyphen or at the end of a word (0-61 times)
optionally finishing with a character or digit finsihing with a .
I don't understand a couple of things here with that last pattern.
For starters, why do you have the [a-z\d] at the end of the expression?
Doesn't the (?!-\b) already ensure that the string will finish with [a-z\d]
? If so, why specify it again?
Secondly, doesn't this expression also allow the the sequence to begin with
a hyphen? I would have expected this sequence to have to start with an
[a-z\d].
Finally, I noticed a possible typo in the very first sequence:
(( ([a-z\d)] :: any character, digit, ) <--- confused by
the ) as a valid char? Is this a typo, or a broken regex?
According to your post, your ) is part of the character sequence. I'm not
sure if that was a typo, or if your regex is actually showing that. Either
way, I thought I would point it out - for both yourself and any other users
who might be examining this.
Thanks!
Eric
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