man Feed::Find (3): Syndication feed auto-discovery

SYNOPSIS

use Feed::Find;
my @feeds = Feed::Find->find('http://example.com/');

DESCRIPTION

Feed::Find implements feed auto-discovery for finding syndication feeds, given a URI. It (currently) passes all of the auto-discovery tests at http://diveintomark.org/tests/client/autodiscovery/.

Feed::Find will discover the following feed formats:

RSS 0.91
RSS 1.0
RSS 2.0
Atom

USAGE

Feed::Find->find($uri)

Given a URI $uri, use a variety of techniques to find the feeds associated with that page. If $uri itself points to a feed (i.e., if the Content-Type of the response is a recognized feed type), returns $uri.

Returns a list of feed URIs.

The following techniques are used:

1. <link> tag auto-discovery: If the page contains any <link> tags in the <head> section, these tags are examined for recognized feed content types. The following content types are treated as feeds: application/x.atom+xml, application/atom+xml, application/xml, text/xml, application/rss+xml, and application/rdf+xml.
2. Scanning <a> tags: If the page does not contain any known <link> tags, the page is then scanned for <a> tags for links to URIs with certain file extensions. The following extensions are treated as feeds: .rss, .xml, and .rdf.
Note that this technique is employed only if the first technique returns no results.

Feed::Find->find_in_html(\$html [, $base_uri ])

Given a reference to a string $html containing an HTML page, uses the same techniques as described above in find to find the feeds associated with that page.

If you know the URI of the page, you should provide it in $base_uri, so that relative links can be properly made absolute. Feed::Find will attempt to determine the correct base URI, but unless that URI is specified in the HTML itself (in a "<meta>" tag), you'll need to supply it yourself.

Returns a list of feed URIs.

LICENSE

Feed::Find is free software; you may redistribute it and/or modify it under the same terms as Perl itself.