Here is an example using XML::LibXML. There are many ways to use the module but I find that Xpath expressions are really powerful once you get your head around them. 
use XML::LibXML;

my $string = q|<?xml version="1.0"?>
<IPDetails>
  <productName>IBM Tivoli Workload Scheduler for Applications</product
+Name>
  <vendorName>IBM</vendorName>
  <version>8.6.0.0</version>
</IPDetails>|;

my $tree = XML::LibXML->load_xml(string => $string);

open (my $out_xml,">",'out.xml') or die "with nice message: $!";

print $out_xml qq|All the hardcoded stuff\n|;

my @nodes = $tree->findnodes('/IPDetails');
for my $node (@nodes) {
    my $product_name = $node->findvalue('productName');
    my $vendor_name = $node->findvalue('vendorName');
    my $version = $node->findvalue('version');
    print $out_xml qq|<Package Name="$product_name" Version="$version"
+>\n|;
    print $out_xml qq|<Property Name="Publisher" Value="$vendor_name">
+\n|;
    print $out_xml qq|</Package>\n|;
}

print $out_xml qq|End stuff\n|;
close $out_xml;

[download]

In reply to Re: How to use perl XML::LibXML Parser? by tangent
in thread How to use perl XML::LibXML Parser? by sriram83.life

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.