=head1 NAME

XML::LibXML::Dtd - XML::LibXML DTD Handling

=head1 SYNOPSIS



  use XML::LibXML;

  $dtd = XML::LibXML::Dtd->new($public_id, $system_id);
  $dtd = XML::LibXML::Dtd->parse_string($dtd_str);
  $publicId = $dtd->getName();
  $publicId = $dtd->publicId();
  $systemId = $dtd->systemId();

=head1 DESCRIPTION

This class holds a DTD. You may parse a DTD from either a string, or from an
external SYSTEM identifier.

No support is available as yet for parsing from a filehandle.

XML::LibXML::Dtd is a sub-class of L<<<<<< XML::LibXML::Node >>>>>>, so all the methods available to nodes (particularly toString()) are available
to Dtd objects.


=head1 METHODS

=over 4

=item new

  $dtd = XML::LibXML::Dtd->new($public_id, $system_id);

Parse a DTD from the system identifier, and return a DTD object that you can
pass to $doc->is_valid() or $doc->validate().



  my $dtd = XML::LibXML::Dtd->new(
                        "SOME // Public / ID / 1.0",
                        "test.dtd"
                                  );
   my $doc = XML::LibXML->new->parse_file("test.xml");
   $doc->validate($dtd);


=item parse_string

  $dtd = XML::LibXML::Dtd->parse_string($dtd_str);

The same as new() above, except you can parse a DTD from a string. Note that
parsing from string may fail if the DTD contains external parametric-entity
references with relative URLs.


=item getName

  $publicId = $dtd->getName();

Returns the name of DTD; i.e., the name immediately following the DOCTYPE
keyword.


=item publicId

  $publicId = $dtd->publicId();

Returns the public identifier of the external subset.


=item systemId

  $systemId = $dtd->systemId();

Returns the system identifier of the external subset.



=back

=head1 AUTHORS

Matt Sergeant,
Christian Glahn,
Petr Pajas


=head1 VERSION

2.0018

=head1 COPYRIGHT

2001-2007, AxKit.com Ltd.

2002-2006, Christian Glahn.

2006-2009, Petr Pajas.

=cut