My Article

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uname -a 

Darwin machine-maci 15.3.0 Darwin Kernel Version 15.3.0: Thu Dec 10 18:40:58 PST 2015; root:xnu3248.30.4~1/RELEASE_X86_64 x86_64

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                Article:- 
                Authors:- 
            
        
    

    
                          
            always Generate this output!! 
        
    


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  My Article
  
    Mr. Foo
    Mr. Bar
  
  This is my article text.


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#!/usr/local/bin/perl -w

use strict;
use warnings;
use File::Path;
use File::Spec;
use File::Basename;
use XML::LibXSLT;
use XML::LibXML;

my $isfile;

my ($xmlfile,$xsltfile,$samplefile) = qw/ Example.xml trans.xsl sample.xml/;

if(-f $samplefile)
{
    $isfile = "true";
    print "File is present\n";
}
else
{
    $isfile = "false";
    print "File is absent\n";
}

my %args = ( "isfile" => $isfile ); 
my $xslt = XML::LibXSLT->new;
my $stylesheet = $xslt->parse_stylesheet_file($xsltfile);
my $results  = 
$stylesheet->transform_file($xmlfile,XML::LibXSLT::xpath_to_string(%{args}));
0;

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xmlXPathCompOpEval: function year not found
Unregistered function
xmlXPathCompiledEval: evaluation failed
runtime error: file trans.xsl line 24 element value-of
XPath evaluation returned no result.