code.H3RALD.com — h3rald: 09d4db3f744cc96460c4f1dec723ac04bb0d7df2

Implemented main RSS and Atom feed

h3rald h3rald@h3rald.com

Thu, 27 Aug 2009 15:53:36 +0200

commit

09d4db3f744cc96460c4f1dec723ac04bb0d7df2

parent

32c016f297c30167de432087f2543aeb643ae36c

8 files changed, 134 insertions(+), 35 deletions(-)

jump to

README.textile

Rules

config.yaml

content/atom.xml

content/home.textile

content/rss.xml

layouts/default.htm

lib/helpers.rb

M README.textile → README.textile

@@ -2,11 +2,12 @@ h2. Dependencies
 
 h3. Ruby Gems
 
-* nanoc (generate static site)
+* nanoc3 (generate static site)
 * extlib (Rake tasks)
 * mysql (Typo migration)
 * sequel (Typo migration)
 * bb-ruby (BBCode filter)
+* builder (Feeds)
 
 h3. Other

M Rules → Rules

@@ -1,33 +1,5 @@ 
 #!/usr/bin/env ruby
 
-"a-look-at-drupal.bbcode
-boolean-search.bbcode
-cakephp.bbcode
-from-firefox-to-deer-park.bbcode
-google-earth.bbcode
-ie-lovers-guide-to-firefox.bbcode
-ma.gnolia.bbcode
-next-generation-dvds.bbcode
-pagerank.bbcode
-perfect-browser.bbcode
-pre-review-of-ie7.bbcode
-project-gutenberg.bbcode
-project-windstone.bbcode
-quick-overview-of-sqlite.bbcode
-server-packages.bbcode
-slax.bbcode
-sqlyog5-review.bbcode
-web-promotion.bbcode
-what-is-ajax.bbcode
-log-jan-2009.bluecloth
-the-rails-way-review.bluecloth".split(/\n/).each do |s|
-	f, ident, fil = s.match(/(.+)\.(.+)$/).to_a
-	compile "/articles/#{ident}" do
-		rep.filter fil.to_sym
-		layout 'default'
-	end
-end
-
 compile /archives/ do
 	rep.filter :erb
 	layout 'default'
@@ -38,10 +10,24 @@ rep.filter :erb
 	rep.filter :redcloth
 	layout 'default'
 end
+
+compile /(rss|atom)/ do
+	rep.filter :erb
+end
 	
 compile '*' do
-	rep.filter :redcloth
+	if !item[:filters_pre].empty? then
+		item[:filters_pre].each do |f|
+			rep.filter f.to_sym
+		end
+	else
+		rep.filter :redcloth
+	end
 	layout 'default'
+end
+
+route '/(atom|rss)/' do
+	item.identifier.gsub(/\/$/, '') + '.xml'
 end
 
 route '*' do

M config.yaml → config.yaml

@@ -4,3 +4,5 @@ - items_root: /
   layouts_root: /
   type: filesystem_combined
 output_dir: output
+base_url: "http://www.h3rald.com"
+author: "Fabio Cevasco"

A content/atom.xml

@@ -0,0 +1,6 @@ 
+---
+permalink: 'atom'
+type: 'feed'
+title: 'Latest Articles (Atom) - HERALD'
+---
+<%= atom_feed %>

M content/home.textile → content/home.textile

@@ -5,6 +5,7 @@ - erb
 - redcloth
 title: Home
 type: page
+feed: ''
 -----
 <%
 max_items = 5

A content/rss.xml

@@ -0,0 +1,6 @@ 
+---
+permalink: 'rss'
+type: 'feed'
+title: 'Latest Articles (RSS) - HERALD'
+---
+<%= rss_feed %>

M layouts/default.htm → layouts/default.htm

@@ -6,8 +6,10 @@ <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
 	<head>
 		<title><%= @item[:title] %> - H3RALD</title>
-		<link rel="alternate" type="application/rss+xml" title="RSS" href="http://www.h3rald.com/rss" />
-		<link rel="alternate" type="application/atom+xml" title="ATOM" href="http://www.h3rald.com/atom" />
+		<% if @item[:feed] then %>
+		<link rel="alternate" type="application/rss+xml" title="RSS" href="http://www.h3rald.com/<%= @item[:feed]%>rss/" />
+		<link rel="alternate" type="application/atom+xml" title="ATOM" href="http://www.h3rald.com/<%= @item[:feed]%>atom/" />
+		<% end %>
 		<meta name="author" content="Fabio Cevasco" />
 		<meta name="copyright" content="Fabio Cevasco" />
 		<meta name="robots" content="all, follow" />

M lib/helpers.rb → lib/helpers.rb

@@ -27,10 +27,105 @@ end
 
 end
 
-module Nanoc3::Helpers::Site
+module Nanoc3::Helpers::Blogging
+
+	def prepare_feed(params)
+		# Extract parameters
+		@item[:limit] ||= 10
+		@item[:articles] = params[:articles] || latest_articles(10) || []
+		@item[:content_proc] = params[:content_proc] || lambda { |a| a.reps[0].content_at_snapshot(:last)}
+		@item[:excerpt_proc] = params[:excerpt_proc] || lambda { |a| a[:excerpt] }
+		@item[:author_name] ||= @site.config[:author]
+		@item[:author_uri] ||= @site.config[:base_url]
+		raise RuntimeError.new('Cannot build feed: site configuration has no base_url') 	if @site.config[:base_url].nil?
+		raise RuntimeError.new('Cannot build feed: feed item has no title') if @item[:title].nil?
+		raise RuntimeError.new('Cannot build feed: no articles') if @item[:articles].empty?
+		raise RuntimeError.new('Cannot build feed: one or more articles doesn\'t have a date') if @item[:articles].any? { |a| a[:date].nil? }
+		@item[:last] = @item[:articles].first
+	end
+
+	def rss_feed(params={})
+		require 'builder'
+		require 'time'
+		prepare_feed params
+		# Create builder
+		buffer = ''
+		xml = Builder::XmlMarkup.new(:target => buffer, :indent => 2)
+		# Build feed
+		xml.instruct!
+		xml.rss(:version => '2.0') do
+			xml.channel do
+				xml.title @item[:title]
+				xml.language 'en-us'
+				xml.updated @item[:last][:date].rfc822
+				xml.ttl '40'
+				xml.description
+				@item[:articles].each do |a|
+					xml.item do
+						xml.title a[:title]
+						xml.description @item[:content_proc].call(a)
+						xml.pubDate a[:date].rfc822
+						xml.guid url_for(a)
+						xml.link url_for(a)
+						xml.author @site.config[:author]
+						xml.comments url_for(a)+'#comments'
+						a[:tags].each do |t|
+							xml.category t
+						end
+					end
+				end
+			end
+			buffer
+		end
+	end
+
+	# Redefine atom_feed method
+	def atom_feed(params={})
+		require 'builder'
+		require 'time'
+		prepare_feed params
+		buffer = ''
+		xml = Builder::XmlMarkup.new(:target => buffer, :indent => 2)
+		xml.instruct!
+		xml.feed(:xmlns => 'http://www.w3.org/2005/Atom') do
+			xml.id      @site.config[:base_url] + '/'
+			xml.title   @item[:title]
+			xml.updated @item[:last][:date].to_iso8601_time
+			xml.link(:rel => 'alternate', :href => @site.config[:base_url])
+			xml.author do
+				xml.name  @item[:author_name]
+				xml.uri   @item[:author_uri]
+			end
+			@item[:articles].each do |a|
+				xml.entry do
+					xml.id        atom_tag_for(a)
+					xml.title     a[:title], :type => 'xhtml'
+					xml.published a[:date].to_iso8601_time
+					xml.updated   a.mtime.to_iso8601_time
+					xml.link(:rel => 'alternate', :href => url_for(a))
+					a[:tags].each do |t|
+						xml.category(:term => t, :scheme => "#{@site.config[:base_url]}/tags/#{t}/")
+					end
+					summary = @item[:excerpt_proc].call(a)
+					xml.summary   summary, :type => 'xhtml' unless summary.nil?
+					xml.content   @item[:content_proc].call(a), :type => 'xhtml'
+				end
+			end
+		end
+		buffer
+	end
+
+	def atom_tag_for(item)
+		require 'time'
+		hostname        = @site.config[:base_url].sub(/.*:\/\/(.+?)\/?$/, '\1')
+		formatted_date  = item[:date].to_iso8601_date
+		'tag:' + hostname + ',' + formatted_date + ':' + (item.reps[0].path || item.identifier)
+	end
+
+
 
 	def latest_articles(max=nil)
-		total = @site.items.select{|p| p.attributes[:date] && p.attributes[:type] == 'article'}.sort{|a, b| a.attributes[:date] <=> b.attributes[:date]}.reverse 
+		total = @site.items.select{|p| p.attributes[:type] == 'article'}.sort{|a, b| a.attributes[:date] <=> b.attributes[:date]}.reverse 
 		max ||= total.length
 		total[0..max-1]
 	end
@@ -70,5 +165,5 @@ 
 end
 
 include Nanoc3::Helpers::Tagging
-include Nanoc3::Helpers::Site
+include Nanoc3::Helpers::Blogging
 include Nanoc3::Helpers::Rendering

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