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Full Discussion: Perl script to create latex template.
Top Forums Programming Perl script to create latex template. Post 302566908 by veerubiji on Friday 21st of October 2011 11:54:21 AM
Old 10-21-2011
Hi, I generated latex template using perl,and complied with MikTeX, its genarating pdf. I written script like this
Code:
#!/usr/bin/env perl

use strict;
use warnings;

use XML::Fast;
use Template;

my $xml = <<'XML';
 <student>
      <number>24</number>
      <education>bachelors</education>
      <specialization>computers </specialization>
     <address>
         <house_number="128"/>
         <street name="xxxx"/>
           <proddutoor/>
      </address>   
</student>
<student>
      <number>23</number>
      <education>ph.d.</education>
      <specialization>physics </specialization>
     <address>
         <house_number="12"/>
         <street name="xxxx"/>
           <kadapa/>
      </address>
</student>
XML
my $xml_hash = xml2hash $xml;

my $template = Template->new();

my $filename = 'output.tex';


$template->process(\*DATA, $xml_hash, $filename)
    || die "Template process failed: ", $template->error(), "\n";

system( "pdflatex $filename" );

__DATA__
\documentclass{article}

\title{Roster}
\author{pavani}

\begin{document}
\maketitle

[% FOREACH st IN student %]
Student [% st.number %] is a [% st.specialization %] [% st.degree %] student and his address is[%address%][%house_number%][%street name%].
[% END %]

\end{document}

when I run it its generating pdf with like this
Code:
student 24 is a computers student and his address is HASH(0x274b27c)
student 23 is a computers student and his address is HASH(0x274b27c)

but I need to print address also but it printing hash not address how to get the address element content also like this
Code:
student 24 is a computers student and his address is 
 house_number="128";
 street name="xxxx";
 proddutoor.
student 23 is a computers student and his address is 
 house_number="12";
 street name="xxxx";
 kadapa.

what should I need to change to print like this in pdf.

2) I have one more question if I am giving input like this XML data its excuting what can I do if I have one file with data same as like this,for example more number of students data in my file.
 

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LEARN ABOUT CENTOS

xml::grove::subst

XML::Grove::Subst(3)					User Contributed Perl Documentation				      XML::Grove::Subst(3)

NAME

       XML::Grove::Subst - substitute values into a template

SYNOPSIS

	use XML::Grove::Subst;

	# Using subst method on XML::Grove::Document or XML::Grove::Element:
	$new_grove = $source_grove->subst( ARGS );
	$new_grove = $source_grove->subst_hash( ARG );

	# Using an XML::Grove::Subst instance:
	$subster = XML::Grove::Subst->new();
	$new_grove = $subster->subst( $source_grove, ARGS );
	$new_grove = $subster->subst_hash( $source_grove, ARG );

DESCRIPTION

       "XML::Grove::Subst" implements XML templates.  "XML::Grove::Subst" traverses through a source grove replacing all elements with names
       `"SUB:XXX"' or `"SUB:key"' with their corresponding values from ARGS (a list) or ARG (a hash), repsectively.

METHODS

       $grove_obj->subst( ARGS ) =item $subster->subst( $grove_obj, ARGS )
	   Search for `"SUB:XXX"' elements, where XXX is an array index, and replace the element with the value from ARGS, a list of values.  The
	   return value is a new grove with the substitutions applied.

       $grove_obj->subst_hash( ARG ) =item $subster->subst_hash( $grove_obj, ARG )
	   Search for `"SUB:key"' elements and replace the element with the value from ARG, a hash of values.  The hash key is taken from the
	   `"key"' attribute of the `"SUB:key"' element, for example, `"<SUB:key key='foo'>"'.	The return value is a new grove with the
	   substitutions applied.

EXAMPLE

       The following template, in a file `"template.xml"', could be used for a simple parts database conversion to HTML:

	   <html>
	     <head>
	       <title><SUB:key key='Name'></title>
	     </head>
	     <body>
	       <h1><SUB:key key='Name'></title>
	       <p>Information for part number <SUB:key key='Number'>:</p>
	       <SUB:key key='Description'>
	     </body>
	   </html>

       To use this template you would first parse it and convert it to a grove, and then use `"subst_hash()"' every time you needed a new page:

	   use XML::Parser::PerlSAX;
	   use XML::Grove;
	   use XML::Grove::Builder;
	   use XML::Grove::Subst;
	   use XML::Grove::PerlSAX;
	   use XML::Handler::XMLWriter;

	   # Load the template
	   $b = XML::Grove::Builder->new();
	   $p = XML::Parser::PerlSAX->new( Handler = $b );
	   $source_grove = $p->parse( Source => { SystemId => 'template.xml' } );

	   # Apply the substitutions
	   $new_grove = $source_grove->subst_hash( { Name => 'Acme DCX-2000 Filter',
						     Number => 'N4728',
						     Description => 'The Best' } );

	   # Write the new grove to standard output
	   $w = XML::Handler::XMLWriter->new();
	   $wp = XML::Grove::PerlSAX->new( Handler => $w );
	   $wp->parse( Source => { Grove => $new_grove } );

AUTHOR

       Ken MacLeod, ken@bitsko.slc.ut.us

SEE ALSO

       perl(1), XML::Grove(3)

       Extensible Markup Language (XML) <http://www.w3c.org/XML>

POD ERRORS

       Hey! The above document had some coding errors, which are explained below:

       Around line 173:
	   You forgot a '=back' before '=head1'

perl v5.16.3							    1999-08-25						      XML::Grove::Subst(3)
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