Exactly that is demonstrated in the example for the section Processing just parts of an XML document. One way of achieving that is:

#!/usr/bin/perl -w
use warnings;
use strict;
use XML::Twig;

my $xml = <<XML;
<head><ID>This is an id</ID>
    <Book1>
    <Title>
    Title stuff
    </Title>
    </Book1>
    <Book2><Title>Another title</Title></Book2>
</head>
XML

my $twig = XML::Twig->new(
    twig_roots => {
        ID          => \&dump,
        TimeStamp   => \&dump,
        IP_Address  => \&dump,
        'Book1/Title'       => sub {title (1, @_);},
        'Book2/Title'       => sub {title (2, @_);},
        Complainant => \&dump,
        }
        );

$twig->parse($xml);


sub dump {
    my ($t, $elt) = @_;
    (my $text = $elt->text()) =~ s/^\s+|\s+$//g;

    print "$text\n";
}


sub title {
    my ($type, $t, $elt) = @_;
    (my $title = $elt->text()) =~ s/^\s+|\s+$//g;
    
    print "Title $type: $title\n";
}

[download]

Prints:

This is an id
Title 1: Title stuff
Title 2: Another title

[download]

Take this code. Make sure you have XML::Twig installed. Play with it until you have some understanding of how it works.

True laziness is hard work

In reply to Re^3: I don't understand why I'm getting an "Use of uninitialized value" error by GrandFather
in thread I don't understand why I'm getting an "Use of uninitialized value" error by TheBigAmbulance

Title:
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