I know you've said you use XML::Twig, but ... this solution has the additional advantage that it doesn't keep the whole parsed document in memory:
use strict;
use warnings;
no warnings 'uninitialized';
use XML::Rules;
my $xmlStr = <<XML;
<foo>
<qp name="foo">
<q supp="yes">hello</q>
<q supp="no">bye</q>
<xr supp="yes">later</xr>
</qp>
<qp name="bar">
<q supp="yes">bye</q>
<xr supp="no">later</xr>
<xr supp="no">sometime</xr>
</qp>
</foo>
XML
my $parser = XML::Rules->new(
stripspaces => 7,
rules => {
'q,xr' => sub {
return if $_[1]->{supp} eq 'yes' or $_[1]->{info} eq 'yes'
+;
return '+count' => 1;
},
qp => sub {
printf "Definition '%s' has %d quotations.\n", $_[1]->{nam
+e}, $_[1]->{count}+0;
return '+total' => $_[1]->{count}+0;
},
foo => sub { return $_[1]->{total} },
_default => '',
},
);
my $total = $parser->parse($xmlStr);
print "The total count is $total\n";
Jenda
Enoch was right!
Enjoy the last years of Rome.
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