note
rcrews
<p>Assuming gibsonca.xml looks like this:</p>
<pre>
<gibsonca>
<abc>fds </abc> <!-- ok -->
<ddd></ddd> <!-- not ok -->
<eee> </eee> <!-- not ok -->
</gibsonca>
</pre>
<p>The following program will print "3" and "4".</p>
<pre>
#!/opt/perl/bin/perl -T
use strict;
use warnings;
use Carp;
use English qw(-no_match_vars);
use Try::Tiny;
use XML::LibXML;
our $VERSION = '0.1';
my $file = 'gibsonca.xml';
my $dom;
open my $fh, '<', $file
or carp "Can't open $file: $OS_ERROR";
try {
$dom = XML::LibXML->load_xml(
{ IO => $fh,
line_numbers => 1,
}
);
}
catch {
print "Error parsing $file";
};
close $fh
or carp "Can't close $file: $OS_ERROR";
for my $e ( $dom->findnodes('//*') ) {
my $t = $e->textContent();
$t =~ s{\A \s+ \z}{}xms;
if ( !$t ) {
print $e->line_number() . "\n";
}
}
exit 0;
__END__
</pre>
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