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.\" ========================================================================
.\"
.IX Title "XML::LibXML::Dtd 3"
.TH XML::LibXML::Dtd 3 2023-07-25 "perl v5.38.0" "User Contributed Perl Documentation"
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.SH NAME
XML::LibXML::Dtd \- XML::LibXML DTD Handling
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\&  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();
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
This class holds a DTD. You may parse a DTD from either a string, or from an
external SYSTEM identifier.
.PP
No support is available as yet for parsing from a filehandle.
.PP
XML::LibXML::Dtd is a sub-class of XML::LibXML::Node, so all the methods available to nodes (particularly \fBtoString()\fR) are available
to Dtd objects.
.SH METHODS
.IX Header "METHODS"
.IP new 4
.IX Item "new"
.Vb 1
\&  $dtd = XML::LibXML::Dtd\->new($public_id, $system_id);
.Ve
.Sp
Parse a DTD from the system identifier, and return a DTD object that you can
pass to \f(CW$doc\fR\->\fBis_valid()\fR or \f(CW$doc\fR\->\fBvalidate()\fR.
.Sp
.Vb 6
\&  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);
.Ve
.IP parse_string 4
.IX Item "parse_string"
.Vb 1
\&  $dtd = XML::LibXML::Dtd\->parse_string($dtd_str);
.Ve
.Sp
The same as \fBnew()\fR 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.
.IP getName 4
.IX Item "getName"
.Vb 1
\&  $publicId = $dtd\->getName();
.Ve
.Sp
Returns the name of DTD; i.e., the name immediately following the DOCTYPE
keyword.
.IP publicId 4
.IX Item "publicId"
.Vb 1
\&  $publicId = $dtd\->publicId();
.Ve
.Sp
Returns the public identifier of the external subset.
.IP systemId 4
.IX Item "systemId"
.Vb 1
\&  $systemId = $dtd\->systemId();
.Ve
.Sp
Returns the system identifier of the external subset.
.SH AUTHORS
.IX Header "AUTHORS"
Matt Sergeant,
Christian Glahn,
Petr Pajas
.SH VERSION
.IX Header "VERSION"
2.0209
.SH COPYRIGHT
.IX Header "COPYRIGHT"
2001\-2007, AxKit.com Ltd.
.PP
2002\-2006, Christian Glahn.
.PP
2006\-2009, Petr Pajas.
.SH LICENSE
.IX Header "LICENSE"
This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.