I need to compare XML that may come from different sources where name space prefixes will be defined separately and perhaps differently.

#!/usr/bin/perl -w
use XML::LibXML;
my $parser = XML::LibXML->new();
my $xmls1 = 
    '<?xml version="1.0" encoding="utf-8" ?> '.
    '<LIST '.
    'xmlns:Z1="TheNameSpace"> '.
    '<Z1:Authors/>'.
    '</LIST>';

my $xmls2 = 
    '<?xml version="1.0" encoding="utf-8" ?> '.
    '<LIST '.
    'xmlns:Z2="TheNameSpace"> '.
    '<Z2:Authors/>'.
    '</LIST>';

my $xml1 = $parser->parse_string($xmls1)->documentElement();
my $xml2 = $parser->parse_string($xmls2)->documentElement();

my @c1 = $xml1->nonBlankChildNodes();
my $c1 = $c1[0];
my @c2 = $xml2->nonBlankChildNodes();
my $c2 = $c2[0];

my $c1ref = ref($c1);
my $c2ref = ref($c2);
print "\$c1ref $c1ref \$c2ref $c2ref\n";

print $c1->toString()."\n";
print $c2->toString()."\n";

my $ns1 = $c1->namespaceURI();
my $ns2 = $c2->namespaceURI();
my $nn1 = $c1->nodeName();
my $nn2 = $c2->nodeName();

print "\$ns1 $ns1\n\$ns2 $ns2\n\n";
print "\$nn1 $nn1\n\$nn2 $nn2\n\n";

print $c1->isEqual($c2)?"Equal\n":"Not\n";
[download]

$c1 and $c2 should be the same. I could compare the namespaces from namespaceURI() and strip off the prefix from nodeName(), that would work, but there must be a better way. Is there?

BTW the output I get from that code is:

$c1ref XML::LibXML::Element $c2ref XML::LibXML::Element
<Z1:Authors/>
<Z2:Authors/>
$ns1 TheNameSpace
$ns2 TheNameSpace

$nn1 Z1:Authors
$nn2 Z2:Authors

Not
[download]

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