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Brendt Wohlberg

NAME

XML::DTD - Perl module for parsing XML DTDs

SYNOPSIS

  use XML::DTD;

  my $dtd = new XML::DTD;
  open(FH,'<file.dtd');
  $dtd->fread(*FH);
  close(FH);
  $dtd->fwrite(*STDOUT);

ABSTRACT

  XML::DTD is a Perl module for parsing XML DTD files.

DESCRIPTION

  XML::DTD is a Perl module for parsing XML DTDs. The following
  methods are provided.
new
  $dtd = new XML::DTD [ ($val) ];

Constructs a new XML::DTD object.

Its parser will be validating, and hence will make parameter entity substitutions, if the argument $val is present and has a boolean value of true.

fread
  $dtd->fread(*FILEHANDLE [, $uri]);

Parse a DTD file. If the URI is passed, it is used as the URI for the document entity.

sread
  $dtd->sread($string [, $uri]);

Parse DTD text in a string. If the URI is passed, it is used as the URI for the document entity.

fwrite
  $dtd->fwrite(*FILEHANDLE);

Write the DTD to a file.

swrite
  $string = $dtd->swrite();

Return the DTD text as a string.

fwritexml
  $dtd->fwritexml(*FILEHANDLE);

Write an XML representation of the DTD to a file.

swritexml
  $string = $dtd->swritexml();

Return an XML representation of the DTD text as a string.

elementnames
  $elts = $dtd->elementnames;

Return an array of element names as an array reference.

element
  $eltobj = $dtd->element('elementname');

Return the element object (of type XML::DTD::Element) associated with the specified name.

attlist
  $attlistobj = $dtd->attlist('elementname');

Return the attribute list object (of type XML::DTD::AttList) associated with the specified name.

entman
  $entmanobj = $dtd->entman;

Return the associated entity manager object (of type XML::DTD::EntityManager).

CAVEATS

The DTD parser is an ugly hack, and while any valid DTD should be parsed correctly, some types of DTD errors may be ignored, and when detected, the error messages are often not very useful. In summary, use other tools, such as xmllint for checking the validity of a DTD.

SEE ALSO

XML::DTD::Parser, XML::DTD::Element, XML::DTD::Attlist, XML::DTD::EntityManager, The XML 1.0 W3C Recommendation at http://www.w3.org/TR/REC-xml/

AUTHOR

Brendt Wohlberg <wohl@cpan.org>

COPYRIGHT AND LICENSE

Copyright (C) 2004-2013 by Brendt Wohlberg

This library is available under the terms of the GNU General Public License (GPL), described in the GPL file included in this distribution.

ACKNOWLEDGMENTS

Peter Lamb <Peter.Lamb@csiro.au> added fetching of external entities and improved entity substitution.