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

my $out_file = 'C:\web_bu.xml';
# export the XML
open (my $fh_out, '>', $out_file) or die "unable to open '$out_file' for writing: $!";

my $t = XML::Twig->new(
    twig_roots               => {'display-name' => \&convert},
    twig_print_outside_roots => $fh_out,
	pretty_print => 'nice'
    );

# including data for ease of post	
#$t->parsefile( $file);	
$t->parse(*DATA);

sub convert {
    my ($t, $elt) = @_;
    my $txt = $elt->text();
	if ($txt =~ /wtw_reports/i) {
      $elt->set_text('SOMEGUY');
	} else {
	  $elt->set_text($txt);
	}
}

__DATA__
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	<display-name>wtw_reports-CIMS_MMA_20110429_DEV</display-name>
	<servlet>
		<display-name>
		Apache-Axis Servlet</display-name>
		<servlet-name>AxisServlet</servlet-name>
		<servlet-class>
		org.apache.axis.transport.http.AxisServlet</servlet-class>
	</servlet>
	<servlet>
		<display-name>
		Axis Admin Servlet</display-name>
		<servlet-name>AdminServlet</servlet-name>
		<servlet-class>
		org.apache.axis.transport.http.AdminServlet</servlet-class>
		<load-on-startup>100</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>AxisServlet</servlet-name>
		<url-pattern>/servlet/AxisServlet</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>AxisServlet</servlet-name>
		<url-pattern>*.jws</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>AxisServlet</servlet-name>
		<url-pattern>/services/*</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>AdminServlet</servlet-name>
		<url-pattern>/servlet/AdminServlet</url-pattern>
	</servlet-mapping>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>default.html</welcome-file>
		<welcome-file>default.htm</welcome-file>
		<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>
</web-app>