Dear Monks,

I have two questions in XML::Twig.

1. In the below string i have two type of elements namely 'p' and 'a'. I want to generate 'id' for those two elements separately. I tried coding as shown below, but i am getting the ids sequencely for both 'p' and 'a' as shown below. Is it not possible to generate id for two or more elements using 'add_id' in XML::Twig? I can able to achieve that by creating two objects (commented code), but i think that is not elegant way. How to achieve that by creating single object. 

Here the ids are sequence for both the elements. I want to start the n
+ew id for 'a' element again from sec1.

output i got:
-------------
<xml>
  <p id="fig1">here the paragraph comes</p>
  <p id="fig2">here the paragraph comes</p>
  <p id="fig3">here the paragraph comes</p>
  <p id="fig4">here the paragraph comes</p>
  <a id="sec5">here the paragraph comes</a> #note here id is not resta
+rting
  <a id="sec6">here the paragraph comes</a>
  <a id="sec7">here the paragraph comes</a>
  <a id="sec8">here the paragraph comes</a>
  <a id="sec9">here the paragraph comes</a>
  <a id="sec10">here the paragraph comes</a>
  <a id="sec11">here the paragraph comes</a>
  <a id="sec12">here the paragraph comes</a>
  <a id="sec13">here the paragraph comes</a>
  <a id="sec14">here the paragraph comes</a>
  <a id="sec15">here the paragraph comes</a>
  <a id="sec16">here the paragraph comes</a>
</xml>

[download]
Required Output:
----------------
<xml>
  <p id="fig1">here the paragraph comes</p>
  <p id="fig2">here the paragraph comes</p>
  <p id="fig3">here the paragraph comes</p>
  <p id="fig4">here the paragraph comes</p>
  <a id="sec1">here the paragraph comes</a> #note here it restarts aga
+in
  <a id="sec2">here the paragraph comes</a>
  <a id="sec3">here the paragraph comes</a>
  <a id="sec4">here the paragraph comes</a>
  <a id="sec5">here the paragraph comes</a>
  <a id="sec6">here the paragraph comes</a>
  <a id="sec7">here the paragraph comes</a>
  <a id="sec8">here the paragraph comes</a>
  <a id="sec9">here the paragraph comes</a>
  <a id="sec10">here the paragraph comes</a>
  <a id="sec11">here the paragraph comes</a>
  <a id="sec12">here the paragraph comes</a>
</xml>

[download]

use strict;
use XML::Twig;

my $string = '<xml>
<p>here the paragraph comes</p>
<p>here the paragraph comes</p>
<p>here the paragraph comes</p>
<p>here the paragraph comes</p>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
<a>here the paragraph comes</a>
</xml>';

my $twig = new XML::Twig(
                    
        twig_handlers => {
                                            p => sub { $_->add_id() } 
+#generate id
                                            a => sub { $_->add_id() },
+ #generate id
                    
                                         },
        pretty_print => 'indented' #print format
);

#my $twig1 = new XML::Twig(
#                    
#        twig_handlers => {
#                                                a => sub { $_->add_id
+() } #generate id
#                                         },
#        pretty_print => 'indented' #print format
#);


$twig->set_id_seed( "fig" );
$twig->parse($string);
$string = $twig->sprint;

#$twig1->set_id_seed( "sec" );
#$twig1->parse($string);
#$string = $twig1->sprint;

print $string;

[download]

2. I want to generated the id in the format id="sec01", id="sec02"...id="sec10"....I can achieve that using regex and sprintf. Also i tried $twig->set_id_seed( "fig0" ), but it is adding '0' to all 'id'. I searched full documentation but there is no methods equivalent to this. Is there a way in this module itself to achieve that.

Thanks in advance.

updated:Changed 'a' element id values from 'fig' to 'sec' to avoid confusion.

Prasad

In reply to 'ID' generation issue and 'ID' format in XML::Twig by prasadbabu

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