Plagger is a pluggable RSS/Atom aggregator that allows users to combine ("pipe") various plugins to customize how feeds are aggregated, filtered, and published/notified. It aims to be the "UNIX pipe of the internet" by providing a simple yet powerful framework to connect different data sources and processing modules in a customizable workflow. The document provides many examples of how Plagger can be used to aggregate feeds from sources like Bloglines or OPML files and publish them to email via Gmail by chaining together relevant subscription, filter, and publish plugins.

1. Plagger the duct tape of the Web Tatsuhiko Miyagawa [email_address] Six Apart, Ltd. / Shibuya Perl Mongers XML Developers' Day #9

7. http://www.vox.com/

22. #!/usr/bin/perl use strict; use warnings; use LWP::UserAgent; use XML::RSS; my $url = "http://example.com/rss.xml"; my $agent = LWP::UserAgent->new; my $xml = $agent->get($url)->content; my $rss = XML::RSS->new; $rss->parse($xml); for my $item (@{$rss->items}) { # do something with $item }

23. #!/usr/bin/perl use strict; use warnings; use LWP::UserAgent; use XML::RSS; my $url = "http://example.com/rss.xml"; my $agent = LWP::UserAgent->new; my $xml = $agent->get($url)->content; my $rss = XML::RSS->new; $rss->parse($xml); for my $item (@{$rss->items}) { # do something with $item }

25. #!/usr/bin/perl use strict; use warnings; use LWP::UserAgent; use XML::RSS; my $url = "http://example.com/rss.xml"; my $agent = LWP::UserAgent->new; my $res = $agent->get($url); if ($res->is_error) { die "Bah." } my $xml = $res->content; my $rss = XML::RSS->new; $rss->parse($xml); for my $item (@{$rss->items}) { # do something with $item }

27. #!/usr/bin/perl use strict; use warnings; use LWP::UserAgent; use XML::RSS; use XML::Atom::Feed; my $url = "http://example.com/rss.xml"; my $agent = LWP::UserAgent->new; my $res = $agent->get($url); if ($res->is_error) { die "Bah." } my $xml = $res->content; if ($res->content_type =~ /atom/) { my $feed = XML::Atom::Feed->new(xml); } else { my $rss = XML::RSS->new; $rss->parse($xml); }

29. #!/usr/bin/perl use strict; use warnings; use LWP::UserAgent; use XML::RSS; my $url = "http://example.com/rss.xml"; my $agent = LWP::UserAgent->new; my $local = cache_path_for($url); my $res = $agent->mirror($url, $local); if ($res->is_error) { die "Bah." } my $xml = $res->content; …

47. via http://www.atmarkit.co.jp/fnetwork/rensai/5minplagger/02.html

48. IRC, Eject, Growl MSAgent, SSTP … Filter Publish StripRSSAd TruePermalink EntryFullText Pipe Thumbnail FindEnclosures FetchEnclosure SpamAssassin RSSLiberalDateTime URLBL ResolveRelativeLink … Gmail Delicious PDF MT Feed Planet Speech … Notify Bloglines Config OPML, XOXO File, DBI, FOAF … Mixi, Frepa POP3, iCal iTunes, Amazon YouTube … Subscription CustomFeed

49. IRC, Eject, Growl MSAgent, SSTP … Filter Publish StripRSSAd TruePermalink EntryFullText Pipe Thumbnail FindEnclosures FetchEnclosure SpamAssassin RSSLiberalDateTime URLBL ResolveRelativeLink … Gmail Delicious PDF MT Feed Planet Speech … Notify Bloglines Config OPML, XOXO File, DBI, FOAF … Mixi, Frepa POP3, iCal iTunes, Amazon YouTube … Subscription CustomFeed

50. IRC, Eject, Growl MSAgent, SSTP … Filter Publish StripRSSAd TruePermalink EntryFullText Pipe Thumbnail FindEnclosures FetchEnclosure SpamAssassin RSSLiberalDateTime URLBL ResolveRelativeLink … Gmail Delicious PDF MT Feed Planet Speech … Notify Bloglines Config OPML, XOXO File, DBI, FOAF … Mixi, Frepa POP3, iCal iTunes, Amazon YouTube … Subscription CustomFeed

51. IRC, Eject, Growl MSAgent, SSTP … Filter Publish StripRSSAd TruePermalink EntryFullText Pipe Thumbnail FindEnclosures FetchEnclosure SpamAssassin RSSLiberalDateTime URLBL ResolveRelativeLink … Gmail Delicious PDF MT Feed Planet Speech … Notify Bloglines Config OPML , XOXO File, DBI, FOAF … Mixi, Frepa POP3, iCal iTunes, Amazon YouTube … Subscription CustomFeed

53. I believe RSS has the potential to be the “UNIX pipe of the internet” … Ray Ozzie CTO of Microsoft http://rayozzie.spaces.live.com/blog/cns!FB3017FBB9B2E142!285.entry

54. "the Unix shell for Web 2.0"

75. rss2email.yaml plugins: - module: Subscription::Config config: feed: - http://bulknews.vox.com/library/posts/atom.xml - http://bulknews.typepad.com/blog/ - module: Publish::Gmail config: mailto: miyagawa@gmail.com

76. RSS in Gmail

77. HTML + Images

78. Feed Image (Logo / Buddy Icon)

79. Search

80. Auto grouping (“Conversations”)

81. Diff

83. rss2email.yaml plugins: - module: Subscription::Config config: feed: - http://bulknews.vox.com/library/posts/atom.xml - http://bulknews.typepad.com/blog/ - module: Filter::FindEnclosures - module: Filter::FetchEnclosure config: dir: /tmp - module: Publish::Gmail config: mailto: miyagawa@gmail.com attach_enclosures: 1

84. Offline Mode POP3 + Thunderbird

86. opml2email.yaml plugins: - module: Subscription::OPML config: url: http://example.com/subscription.opml - module: Publish::Gmail config: mailto: miyagawa@gmail.com # subscription.opml <?xml version=&quot;1.0&quot;?> <opml> <outline title=&quot;Subscriptions&quot;> <outline title=&quot;miyagawa&quot; type=&quot;rss&quot; xmlUrl=&quot;http://bulknews.typepad.com/blog/atom.xml&quot; /> <outline title=&quot;miyagawa on Vox&quot; type=&quot;rss&quot; htmlUrl=&quot;http://bulknews.vox.com/&quot; /> </outline> </opml>

88. filesub2email.yaml plugins: - module: Subscription::File config: url: file:///path/to/subscription.txt - module: Publish::Gmail config: mailto: miyagawa@gmail.com > cat subscription.txt http://bulknews.typepad.com/blog/atom.xml http://bulknews.vox.com/ >

90. bloglines2email.yaml plugins: - module: Subscription::Bloglines config: username: YOU@example.com password: blahblahblah - module: Publish::Gmail config: mailto: miyagawa@gmail.com

92. bloglines2email.yaml plugins: - module: Subscription::LivedoorReader config: username: YOU@example.com password: blahblahblah - module: Publish::Gmail config: mailto: miyagawa@gmail.com

94. bloglines2email.yaml plugins: - module: Subscription::Bloglines config: username: YOU@example.com password: blahblahblah - module: Widget::Simple config: widget: delicious - module: Publish::Gmail config: mailto: miyagawa@gmail.com

97. bloglines2email.yaml plugins: - module: Subscription::Bloglines config: username: YOU@example.com password: blahblahblah - module: Widget::Simple config: widget: hatena_bookmark_users - module: Publish::Gmail config: mailto: miyagawa@gmail.com

100. bloglines2email.yaml plugins: - module: Subscription::Bloglines config: username: YOU@example.com password: blahblahblah - module: Widget::Simple config: widget: delicious - module: Filter::StripRSSAd - module: Publish::Gmail config: mailto: miyagawa@gmail.com

133. Notify::Eject Supports: Windows, Linux, FreeBSD and Mac OSX!

138. http://d.hatena.ne.jp/sugarcut/20061117/p1 それ Pla 脳 それ Plagger で できるよ それプラズマで 説明できるよ

143. Plagger::Subscription Plagger::Feed author id link title tags url entries Plagger::Feed author id link title tags url entries Plagger::Feed author id link title tags url entries Plagger::Entry author id link permalink title tags enclosures

144. ピザ Pla の意義

148. &quot;the Unix shell for Web 2.0&quot;

149. &quot;RSS is the Standard IO for the Web&quot;

150. &quot;RSS is the Standard IO for the Web&quot;

151. Feed formats RSS 0.91 RSS 2.0 RSS1.0 / RDF Atom 1.0 JSON iCal OPML XOXO XBEL Sitemaps attention.xml Amazon API Google API OpenSearch AtomPP GData

152. Feed Vocabulary / Extensions rvw: Enclosures Photocast iTunes RSS Media RSS Dublin Core FOAF microformats

154. Plagger = The duct tape of the web.

156. N 37.7782 W 122.3973

157. GeoRSS <georss:point>37.7782 -122.3973</georss:point> <georss:where> <gml:Point> <gml:pos>37.7782 -122.3973</gml:pos> </gml:Point> </georss:where> xmlns:georss=&quot;http://www.georss.org/georss&quot; xmlns:gml=&quot;http://www.opengis.net/gml&quot;

158. RDF geo vocabulary <foaf:based_near> <geo:Point> <geo:lat>35.678</geo:lat> <geo:long>139.770</geo:long> </geo:Point> </foaf:based_near> xmlns:geo=&quot;http://www.w3.org/2003/01/geo/wgs84_pos#&quot;

159. Flickr geo tag <media:category scheme=&quot;urn:flickr:tags&quot;> geo:lat=37.7782 geo:lon=-122.3973 </media:category> xmlns:media=&quot;http://search.yahoo.com/mrss/&quot;

160. GeoURL <meta name=&quot;ICBM&quot; content=&quot;37.7782, -122.3973&quot; />

161. geo microformats <div class=&quot;geo&quot;> <span class=&quot;latitude&quot;>37.7782</span> <span class=&quot;longitude&quot;>-122.3973</span> </div>

162. Links to Google Maps <a href=&quot;http://maps.google.com/maps?q=37.7782,-122.3973&z=16&quot;> Link to Google Maps</a>

163. Eznavi mail

164. Photo EXIF

165. adr <div class=&quot;adr&quot;> <div class=&quot;street-address&quot;>548 4th St.</div> <span class=&quot;locality&quot;>San Francisco</span>, <span class=&quot;region&quot;>CA</span> <span class=&quot;postal-code&quot;>94107</span> <div class=&quot;country-name&quot;>U.S.A.</div> </div>

167. GeoRSS <georss:point>37.7782 -122.3973</georss:point> <georss:where> <gml:Point> <gml:pos>37.7782 -122.3973</gml:pos> </gml:Point> </georss:where> Namespace::GeoRSS

168. RDF geo vocabulary <foaf:based_near> <geo:Point> <geo:lat>35.678</geo:lat> <geo:long>139.770</geo:long> </geo:Point> </foaf:based_near> Namespace::Geo

169. Flickr geo tag <media:category scheme=&quot;urn:flickr:tags&quot;> geo:lat=37.7782 geo:lon=-122.3973 </media:category> Filter::geotagged

170. GeoURL <meta name=&quot;ICBM&quot; content=&quot;37.7782, -122.3973&quot; /> Filter::GeoURL

171. geo microformats <div class=&quot;geo&quot;> <span class=&quot;latitude&quot;>37.7782</span> <span class=&quot;longitude&quot;>-122.3973</span> </div> Filter::Microformats::geo

172. Links to Google Maps <a href=&quot;http://maps.google.com/maps?q=37.7782,-122.3973&z=16&quot;> Link to Google Maps</a> Filter::ExtractMapsLinks

173. Eznavi mail Filter::ExtractMapsLinks

174. Photo EXIF Filter::FetchEnclosure + Filter::ExtractEXIF

175. adr <div class=&quot;adr&quot;> <div class=&quot;street-address&quot;>548 4th St.</div> <span class=&quot;locality&quot;>San Francisco</span>, <span class=&quot;region&quot;>CA</span> <span class=&quot;postal-code&quot;>94107</span> <div class=&quot;country-name&quot;>U.S.A.</div> </div> Filter::Microformats::adr + Filter::Geocoding::US