Abigail sprak:
> I'm not going to claim this is the shortest solution, but this
> is very straightforward (and untested):
>
> /^(?=.{6}) # At least 6 characters long.
> (?=.*[a-z]) # Contains a lowercase letter.
> (?=.*[A-Z]) # Contains an uppercase letter.
> (?=.*[0-9]) # Contains a digit.
> (?=.*[-_]) # Contains a dash or an underscore.
> (?!.{15}) # Doesn't contain 15 characters.
> /xs;
To make it consistent with earlier offerings from Makepeace, Sec
and me (Aristotle's is different in that it does not accept '-'
and '_') may I suggest:
/^(?=.{6}) # At least 6 characters long.
(?=.*[a-z]) # Contains a lowercase letter.
(?=.*[A-Z]) # Contains an uppercase letter.
(?=.*[0-9]) # Contains a digit.
(?!.*[^-\w]) # Doesn't contain an invalid char.
(?!.{15}) # Doesn't contain 15 characters.
/xs;
Following Abigail's style, my chopsticks solution can be made more
palatable (if less pleasing to the eye):
length() > 5 # At least 6 characters long.
&& tr/a-z// # Contains a lowercase letter.
&& tr/A-Z// # Contains an uppercase letter.
&& tr/0-9// # Contains a digit.
&& !tr/-_a-zA-Z0-9//c # Doesn't contain an invalid char.
&& length() < 15 # Doesn't contain 15 characters.
/-\
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