NAME

XML::Canonical - Perl Implementation of Canonical XML

SYNOPSIS

use XML::Canonical;
$canon = XML::Canonical->new(comments => 1);
$canon_xml = $canon->canonicalize_string($xml_string);
$canon_xml = $canon->canonicalize_document($xmlgdome_document);

my @nodes = $doc->findnodes(qq{(//*[local-name()='included'] | //@*)});
my $canon_output = $canon->canonicalize_nodes($doc, \@nodes);

DESCRIPTION

This module provides an implementation of Canonical XML Recommendation (Version 1, 15 March 2001). It uses XML::GDOME for its DOM tree and XPath nodes.

METHODS

$canon = XML::Canonical->new( comments => $comments );

Returns a new XML::Canonical object. If $comments is 1, then the canonical output will include comments, otherwise comments will be removed from the output.

$output = $canon->canonicalize_string( $xml_string );

Reads in an XML string and outputs its canonical form.

$output = $canon->canonicalize_document( $libxml_doc );

Reads in a XML::LibXML::Document object and returns its canonical form.

$output = $canon->canonicalize_nodes( $libxml_doc, $nodes );

Reads in a XML::GDOME::Document object and an array reference to a set of visible nodes returns the canonical form of the selected nodes.

TODO

Support for XML Signature and upcoming XML Encryption. See http://www.w3.org/Signature/ The interface should be similar to the Apache XML Security package, to make it easy to switch between the packages.

NOTES

This module is in early alpha stage. It is suggested that you look over the source code and test cases before using the module. In addition, the API is subject to change.

This module implements the lastest w3 recommendation, located at http://www.w3.org/TR/2001/REC-xml-c14n-20010315

Parts are adapted from the Apache XML Security package. See http://xml.apache.org/security/

Comments, suggestions, and patches welcome.

AUTHOR

T.J. Mather, <tjmather@tjmather.com>

COPYRIGHT

Copyright (c) 2001, 2002 T.J. Mather. XML::Canonical is free software; you may redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

XML::GDOME, XML::Handler::CanonXMLWriter.