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;
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