NAME XML::Twig - Tree interface to XML documents allowing processing chunk by chunk of huge documents. SUMMARY (see perldoc XML::Twig for full details) XML::Twig is (yet another!) XML transformation module. Its strong points: can be used to process huge documents while still being in tree mode; not bound by DOM or SAX, so it is very perlish and offers a very comprehensive set of methods; simple to use; DWIMs as much as possible What it doesn't offer: full SAX support (it can export SAX, but only reads XML), full XPath support (unless you use XML::Twig::XPath), nor DOM support. Other drawbacks: it is a big module, and with over 500 methods available it can be a bit overwhelming. A good starting point is the tutorial at http://xmltwig.com/xmltwig/tutorial/index.html. In fact the whole XML::Twig page at http://xmltwig.com/xmltwig/ has plenty of information to get you started with XML::Twig TOOLS XML::Twig comes with a few tools built on top of it: xml_pp XML pretty printer xml_grep XML grep - grep XML files using XML::Twig's subset of XPath xml_split split big XML files xml_merge merge back files created by xml_split xml_spellcheck spellcheck XML files skipping tags Running perl Makefile.PL will prompt you for each tool installation. perl Makefile -y will install all of the tools without prompt perl Makefile -n will skip the installation of the tools SYNOPSYS single-tree mode my $t= XML::Twig->new(); $t->parsefile( 'doc.xml'); $t->print; chunk mode # print the document, at most one full section is loaded in memory my $t= XML::Twig->new( twig_handlers => { section => \&flush}); $t->parsefile( 'doc.xml'); $t->flush; sub flush { (my $twig, $section)= @_; $twig->flush; } sub-tree mode # print all section title's in the document, # all other elements are ignored (and not stored) my $t= XML::Twig->new( twig_roots => { 'section/title' => sub { $_->print, "\n" } } ); $t->parsefile( 'doc.xml'); INSTALLATION perl Makefile.PL make make test make install DEPENDENCIES XML::Twig needs XML::Parser (and the expat library) installed Modules that can enhance XML::Twig are: Scalar::Util or WeakRef to avoid memory leaks Encode or Text::Iconv or Unicode::Map8 and Unicode::Strings to do encoding conversions Tie::IxHash to use the keep_atts_order option XML::XPathEngine to use XML::Twig::XPath LWP to use parseurl HTML::Entities to use the html_encode filter HTML::TreeBuilder to process HTML instead of XML CHANGES See the Changes file AUTHOR Michel Rodriguez (mirod@cpan.org) The Twig page is at http://www.xmltwig.com/xmltwig git project repository: http://github.com/mirod/xmltwig See the XML::Twig tutorial at http://www.xmltwig.com/xmltwig/tutorial/index.html COPYRIGHT Copyright (c) 1999-2010, Michel Rodriguez. All Rights Reserved. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.