Hello Monks, I have an XML file with this structure: 
<document>
 <product>
  <date></date>
  <price></price>
  <content>heinous amount of unwanted text</conten>
  <color></color>
 </product>
 <product>
  <date></date>
  <price></price>
  <content>heinous amount of unwanted text</conten>
  <color></color>
 </product>
</document>

[download]
Those <content> element contain huge amounts of text, as much as 80 MB. I need to truncate that text to, say 1-3MB, doesn't have to be exact. So I tried XML::Twig with like this: 
XML::Twig->new( twig_roots => { content => \&content }, twig_print_out
+side_roots => 1, keep_spaces => 1, ) ->parsefile( 'ginormous.xml');

exit;

sub text { 
my( $t, $content) = @_;
my $snipped = substr($content->text, 0, 1000000);
$content->set_cdata($snipped);

$t->flush; }

[download]
It kinda worked, but took, like, overnight. So I tried using XML:Sax to extract the one element and do the truncation, which worked great and took only a few minutes. So now I need to get rid of the <content> element in the original so I can plug the truncated stuff back into it. I thought this should work: 
my $field= 'content';
                                            
my $twig= new XML::Twig( twig_roots    => { $field => 1 },
                                              
                         twig_print_outside_roots => 1, 
                         twig_handlers => { $field => \&field } ); 

$twig->parsefile( "ginormous.xml");               

sub field
  { my( $twig, $field)= @_;                      
    $field->delete;    
  }

[download]
but it also took, like, overnight. How can I ignore <content> completely, and just print the rest?
Thanks!

In reply to Prune Twig From Huge XML File by andergoo

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