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Diffstat (limited to 'lib/Tree/Transform/XSLTish.pm')
| -rw-r--r-- | lib/Tree/Transform/XSLTish.pm | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/Tree/Transform/XSLTish.pm b/lib/Tree/Transform/XSLTish.pm index 8be326d..c79dae7 100644 --- a/lib/Tree/Transform/XSLTish.pm +++ b/lib/Tree/Transform/XSLTish.pm @@ -89,6 +89,29 @@ Tree::Transform::XSLTish - transform tree data, like XSLT but in Perl my ($node5_data)=MyTransform->new->transform($tree); +Transforming an HTML document: + + package HtmlTransform; + use Tree::Transform::XSLTish; + use strict; + use warnings; + + default_rules; + + tree_rule match => 'img[@alt="pick"]', action => sub { + return $_[0]->it->findvalue('@src'); + }; + + package main; + use XML::XPathEngine; + use HTML::TreeBuilder::XPath; + + my $tree=HTML::TreeBuilder::XPath->new(); + $tree->parse_file('mypage.html'); + + my $trans=HtmlTransform->new(engine=>XML::XPathEngine->new()); + my ($image_srce)=$trans->transform($tree); + =head1 DESCRIPTION This module allows you to transform tree with Perl subroutines, just @@ -98,6 +121,16 @@ It tries to model as closely as reasonable the semantic of XSLT. =head1 REQUIREMENTS +By default, this module uses L<Tree::XPathEngine> as its XPath engine, +but you can use any other similar module, provided it implements the +method C<findnodes> with the same signature and +meaning. L<XML::XPathEngine> is a good candidate. + +The tree that you intend to manipulate must be implemented by classes +that are compatible with the XPath engine; for example, +L<Tree::DAG_Node::XPath> if you use L<Tree::XPathEngine>, or +L<HTML::TreeBuilder::XPath> if you use L<XML::XPathEngine>. + =head1 AUTHOR Gianni Ceccarelli <dakkar@thenautilus.net> |