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LEARN ABOUT DEBIAN
xml::rss::feed
XML::RSS::Feed(3pm) User Contributed Perl Documentation XML::RSS::Feed(3pm)
NAME
XML::RSS::Feed - Persistant XML RSS Encapsulation
VERSION
2.212
SYNOPSIS
A quick and dirty non-POE example that uses a blocking sleep. The magic is in the late_breaking_news method that returns only headlines it
hasn't seen.
use XML::RSS::Feed;
use LWP::Simple qw(get);
my $feed = XML::RSS::Feed->new(
url => "http://www.jbisbee.com/rdf/",
name => "jbisbee",
delay => 10,
debug => 1,
tmpdir => "/tmp", # optional caching
);
while(1) {
$feed->parse(get($feed->url));
print $_->headline . "
" for $feed->late_breaking_news;
sleep($feed->delay);
}
ATTENTION! - If you want a non-blocking way to watch multiple RSS sources with one process use POE::Component::RSSAggregator.
CONSTRUCTOR
XML::RSS::Feed->new( url => $url, name => $name )
Required Params
* name
Identifier and hash lookup key for the RSS feed.
* url
The URL of the RSS feed
Optional Params
* delay
Number of seconds between updates (defaults to 600)
* tmpdir
Directory to keep a cached feed (using Storable) to keep persistance between instances.
* debug
Turn debuging on.
* headline_as_id
Boolean value to use the headline as the id when URL isn't unique within a feed.
* hlobj
A class name sublcassed from XML::RSS::Headline
* max_headlines
The max number of headlines to keep. (default is unlimited)
METHODS
$feed->parse( $xml_string )
Pass in a xml string to parse with XML::RSS and then call process to process the results.
$feed->process( $items, $title, $link )
$feed->process( $items, $title )
$feed->process( $items )
Calls pre_process, process_items, post_process, title, and link methods to process the parsed results of an RSS XML feed.
* $items
An array of hash refs which will eventually become XML::RSS::Headline objects. Look at XML::RSS::Headline->new() for acceptable argu-
ments.
* $title
The title of the RSS feed.
* $link
The RSS channel link (normally a URL back to the homepage) of the RSS feed.
$feed->pre_process
Mark all headlines from previous run as seen.
$feed->process_items( $items )
Turn an array refs of hash refs into XML::RSS::Headline objects and added to the internal list of headlines.
$feed->post_process
Post process cleanup, cache headlines (if tmpdir), and debug messages.
$feed->create_headline( %args)
Create a new XML::RSS::Headline object and add it to the interal list. Check XML::RSS::Headline->new() for acceptable values for %args.
$feed->num_headlines
Returns the number of headlines for the feed.
$feed->seen_headline( $id )
Just a boolean test to see if we've seen a headline or not.
$feed->headlines
Returns an array or array reference (based on context) of XML::RSS::Headline objects
$feed->late_breaking_news
Returns an array or the number of elements (based on context) of the latest XML::RSS::Headline objects.
$feed->cache
If tmpdir is defined the rss info is cached.
$feed->set_last_updated
$feed->set_last_updated( Time::HiRes::time )
Set the time of when the feed was last processed. If you pass in a value it will be used otherwise calls Time::HiRes::time.
$feed->last_updated
The time (in epoch seconds) of when the feed was last processed.
$feed->last_updated_hires
The time (in epoch seconds and milliseconds) of when the feed was last processed.
SET
/GET ACCESSOR METHODS
$feed->title
$feed->title( $title )
The title of the RSS feed.
$feed->debug
$feed->debug( $bool )
Turn on debugging messages
$feed->init
$feed->init( $bool )
init is used so that we just load the current headlines and don't return all headlines. in other words we initialize them. Takes a bool-
ean argument.
$feed->name
$feed->name( $name )
The identifier of an RSS feed.
$feed->delay
$feed->delay( $seconds )
Number of seconds between updates.
$feed->link
$feed->link( $rss_channel_url )
The url in the RSS feed with a link back to the site where the RSS feed came from.
$feed->url
$feed->url( $url )
The url in the RSS feed with a link back to the site where the RSS feed came from.
$feed->headline_as_id
$feed->headline_as_id( $bool )
Within some RSS feeds the URL may not always be unique, in these cases you can use the headline as the unique id. The id is used to check
whether or not a feed is new or has already been seen.
$feed->hlobj
$feed->hlobj( $class )
Ablity to use a subclass of XML::RSS::Headline. (See Perl Jobs example in XML::RSS::Headline::PerlJobs). This should just be the name of
the subclass.
$feed->tmpdir
$feed->tmpdir( $tmpdir )
Temporay directory to store cached RSS XML between instances for persistance.
$feed->max_headlines
$feed->max_headlines( $integer )
The maximum number of headlines you'd like to keep track of. (0 means infinate)
DEPRECATED METHODS
$feed->failed_to_fetch
This should was deprecated because, the object shouldn't really know anything about fetching, it just processes the results. This method
currently will always return false
$feed->failed_to_parse
This method was deprecated because, $feed->parse now returns a bool value. This method will always return false
AUTHOR
Jeff Bisbee, "<jbisbee at cpan.org>"
BUGS
Please report any bugs or feature requests to "bug-xml-rss-feed at rt.cpan.org", or through the web interface at
<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=XML-RSS-Feed>. I will be notified, and then you'll automatically be notified of progress
on your bug as I make changes.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc XML::RSS::Feed
You can also look for information at:
* AnnoCPAN: Annotated CPAN documentation
<http://annocpan.org/dist/XML-RSS-Feed>
* CPAN Ratings
<http://cpanratings.perl.org/d/XML-RSS-Feed>
* RT: CPAN's request tracker
<http://rt.cpan.org/NoAuth/Bugs.html?Dist=XML-RSS-Feed>
* Search CPAN
<http://search.cpan.org/dist/XML-RSS-Feed>
ACKNOWLEDGEMENTS
Special thanks to Rocco Caputo, Martijn van Beers, Sean Burke, Prakash Kailasa and Randal Schwartz for their help, guidance, patience, and
bug reports. Guys thanks for actually taking time to use the code and give good, honest feedback.
COPYRIGHT &; LICENSE
Copyright 2006 Jeff Bisbee, all rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
XML::RSS::Headline, XML::RSS::Headline::PerlJobs, XML::RSS::Headline::Fark, XML::RSS::Headline::UsePerlJournals, POE::Component::RSSAggre-
gator
perl v5.8.8 2006-07-17 XML::RSS::Feed(3pm)
