emit PubSubHubbub atom:link tags in rss10 and rss20

planet/config.py

@@ -105,6 +105,8 @@ def __init__():
     define_planet('output_theme', '')
     define_planet('output_dir', 'output')
     define_planet('spider_threads', 0) 
+    # set pubsubhubbub_hub to None to prevent it from being emitted
+    define_planet('pubsubhubbub_hub', 'http://pubsubhubbub.appspot.com') 
 
     define_planet_int('new_feed_items', 0) 
     define_planet_int('feed_timeout', 20)

planet/shell/tmpl.py

@@ -219,6 +219,7 @@ def template_info(source):
     output['link'] = config.link()
     output['owner_name'] = config.owner_name()
     output['owner_email'] = config.owner_email()
+    output['pubsubhubbub_hub'] = config.pubsubhubbub_hub()
     if config.feed():
         output['feed'] = config.feed()
         output['feedtype'] = config.feed().find('rss')>=0 and 'rss' or 'atom'

themes/common/rss10.xml.tmpl

@@ -4,12 +4,16 @@
 	xmlns:dc="http://purl.org/dc/elements/1.1/"
 	xmlns:foaf="http://xmlns.com/foaf/0.1/"
 	xmlns:content="http://purl.org/rss/1.0/modules/content/"
+	xmlns:atom="http://www.w3.org/2005/Atom"
 	xmlns="http://purl.org/rss/1.0/"
 >
 <channel rdf:about="<TMPL_VAR link ESCAPE="HTML">">
 	<title><TMPL_VAR name ESCAPE="HTML"></title>
 	<link><TMPL_VAR link ESCAPE="HTML"></link>
 	<description><TMPL_VAR name ESCAPE="HTML"> - <TMPL_VAR link ESCAPE="HTML"></description>
+	<TMPL_IF pubsubhubbub_hub>
+	<atom:link rel="hub" href="<TMPL_VAR pubsubhubbub_hub ESCAPE="HTML">"/>
+	</TMPL_IF>
 
 	<items>
 		<rdf:Seq>

themes/common/rss20.xml.tmpl

@@ -1,11 +1,14 @@
 <?xml version="1.0"?>
-<rss version="2.0">
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
 
 <channel>
 	<title><TMPL_VAR name></title>
 	<link><TMPL_VAR link ESCAPE="HTML"></link>
 	<language>en</language>
 	<description><TMPL_VAR name ESCAPE="HTML"> - <TMPL_VAR link ESCAPE="HTML"></description>
+	<TMPL_IF pubsubhubbub_hub>
+	<atom:link rel="hub" href="<TMPL_VAR pubsubhubbub_hub ESCAPE="HTML">"/>
+	</TMPL_IF>
 
 <TMPL_LOOP Items>
 <item>