my @RE = (qr/[[:lower:]]/, qr/[[:upper:]]/, qr/[0-9]/, qr/[^[:alnum:]]
+/);
sub check {
local ($_) = @_;
my $length = length;
return if $length < 8;
return if $length < 12 && (! /$RE[0]/ || ! /$RE[1]/ || ! /$RE[2]/
+|| ! /$RE[3]/);
return if $length < 16 && (! /$RE[0]/ || ! /$RE[1]/ || ! /$RE[2]/)
+;
return if $length < 20 && (! /$RE[0]/ || ! /$RE[1]/);
return 1
}
Tested against the tests from Re: Efficient way to verify scalar contents (updated x3) (haukex++).
Update:
Or, if you want to abstract away the repeating $RE[...]
use List::Util qw{ any };
my @RE = (qr/[[:lower:]]/, qr/[[:upper:]]/, qr/[0-9]/, qr/[^[:alnum:]]
+/);
sub check {
my ($password) = @_;
my $length = length $password;
return if $length < 8;
return if $length < 12 && any { $password !~ $RE[$_] } 0 .. 3;
return if $length < 16 && any { $password !~ $RE[$_] } 0 .. 2;
return if $length < 20 && any { $password !~ $RE[$_] } 0 .. 1;
return 1
}
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
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