NAME

       Zonemaster::Engine::DNSName - class representing DNS names

SYNOPSIS

           my $name1 = Zonemaster::Name->new('www.example.org');
           my $name2 = Zonemaster::Name->new('ns.example.org');
           say "Yay!" if $name1->common($name2) == 2;

ATTRIBUTES

       labels
           A reference to a list of strings, being the labels the DNS name is made up from.

METHODS

       new($input) _or_ new({ labels => \@labellist})
           The constructor can be called with either a single argument or with a reference to a
           hash as in the example above.

           If there is a single argument, it must be either a non-reference, a
           Zonemaster::Engine::DNSName object or a Zonemaster::Engine::Zone object.

           If it's a non-reference, it will be split at period characters (possibly after
           stringification) and the resulting list used as the name's labels.

           If it's a Zonemaster::Engine::DNSName object it will simply be returned.

           If it's a Zonemaster::Engine::Zone object, the value of its "name" attribute will be
           returned.

       from_string($domain)
           A specialized constructor that must be called with a string.

       string()
           Returns a string representation of the name. The string representation is created by
           joining the labels with dots. If there are no labels, a single dot is returned. The
           names created this way do not have a trailing dot.

           The stringification operator is overloaded to this function, so it should rarely be
           necessary to call it directly.

       fqdn()
           Returns the name as a string complete with a trailing dot.

       str_cmp($other)
           Overloads string comparison. Comparison is made after converting the names to upper
           case, and ignores any trailing dot on the other name.

       next_higher()
           Returns a new Zonemaster::Engine::DNSName object, representing the name of the called
           one with the leftmost label removed.

       common($other)
           Returns the number of labels from the rightmost going left that are the same in both
           names. Used by the recursor to check for redirections going up the DNS tree.

       is_in_bailiwick($other)
           Returns true if $other is in-bailiwick of $self, and false otherwise.  See also
           <https://tools.ietf.org/html/rfc7719#section-6>.

       prepend($label)
           Returns a new Zonemaster::Engine::DNSName object, representing the called one with the
           given label prepended.

       TO_JSON
           Helper method for JSON encoding.