I check, and when you use ignore_elts, the data in the ignored element is never loaded. So there is no reason why the code shouldn't be fast.

Indeed the following code worked takes 0.2s on my (rather slow) machine to prune a 200 MB document containing 20 content elements, each containing a 10 MB CDATA section:

#!/usr/bin/perl

use strict;
use warnings;
 
use XML::Twig;

XML::Twig->new( ignore_elts => { content => 1 }, twig_handlers => { _d
+efault_ => sub { $_->flush } }, keep_spaces => 1, )
         ->parsefile( 'doc_with_big_content.xml');

[download]

Now I have to see if I can improve the "snipping" part. Maybe by giving the option to not buffer the entire text for each element. How big is your file BTW?

In reply to Re: Prune Twig From Huge XML File by mirod
in thread Prune Twig From Huge XML File by andergoo

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