lib/helpers.rb
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require 'redcloth' module Nanoc3::Helpers::Tagging def site_tags ts = {} @items.each do |p| next unless p[:tags] p[:tags].each do |t| if ts[t] ts[t] = ts[t]+1 else ts[t] = 1 end end end ts end def tag_link_with_count(tag, count) %{#{link_for_tag(tag, '/tags/')} (#{count})} end def sorted_site_tags site_tags.sort{|a, b| a[1] <=> b[1]}.reverse end def articles_tagged_with(tag) @site.items.select{|p| p.attributes[:tags] && p.attributes[:tags].include?(tag)}.sort{|a,b| a.attributes[:date] <=> b.attributes[:date]}.reverse end end module Nanoc3::Helpers::Blogging def reencode_html_entities(string) =begin require 'htmlentities' $KCODE = 'u' coder = HTMLEntities.new # Change named entities to their unicode counterparts string.gsub!(/&.+?;/) do |m| coder.encode(coder.decode(m), :decimal) end # Encode & in URLs string.gsub! /&(.+?)=/, '&\1=' =end string end def prepare_feed(params) # Extract parameters @item[:limit] ||= 10 @item[:articles] = params[:articles] || latest_articles(10) || [] @item[:content_proc] = params[:content_proc] || lambda { |a| reencode_html_entities(a.reps[0].content_at_snapshot(:pre))} @item[:excerpt_proc] = params[:excerpt_proc] || lambda { |a| a[:excerpt] } @item[:author_uri] ||= @site.config[:base_url] @item[:author_name] ||= @site.config[:author_name] 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.lastBuildDate @item[:last][:date].rfc822 xml.ttl '40' xml.link @site.config[:base_url] 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_email] 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.link(:rel => 'self', :href => @site.config[:base_url]+"/#{@item[:permalink]}/") xml.author do xml.name @item[:author_name] xml.uri @item[:author_uri] end count = 0 @item[:articles].each do |a| xml.entry do xml.id atom_tag_for(a) xml.title a[:title] xml.published a[:date].to_iso8601_time xml.updated((a.mtime-count).to_iso8601_time) count = count+1 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 => 'html' unless summary.nil? xml.content(:type => 'html') do |c| c << %{<![CDATA[\n#{@item[:content_proc].call(a)}]]>\n} end 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[:type] == 'article'}.sort{|a, b| a.attributes[:date] <=> b.attributes[:date]}.reverse max ||= total.length total[0..max-1] end def popular_articles(max=nil) total = @site.items.select{|p| p.attributes[:date] && p.attributes[:type] == 'article' && p.attributes[:popular]}.sort{|a, b| a.attributes[:date] <=> b.attributes[:date]}.reverse max ||= total.length total[0..max-1] end def articles_by_month articles = latest_articles m_articles = [] index = -1 current_month = "" articles.each do |a| next unless a.attributes[:date] month = a.attributes[:date].strftime("%B %Y") if current_month != month then # new month m_articles << [month, [a]] index = index + 1 current_month = month else # same month m_articles[index][1] << a end end m_articles end def month_link_with_count(month, count) permalink = month.downcase.gsub /\s/, '-' %{<a href="/archives/#{permalink}/">#{month}</a> (#{count})} end end include Nanoc3::Helpers::Tagging include Nanoc3::Helpers::Blogging include Nanoc3::Helpers::Rendering |