Import for Diigo sidebar plugin

Rakefile

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+require 'rake'
+require 'rake/testtask'
+require 'rake/rdoctask'
+
+desc 'Default: run unit tests.'
+task :default => :test
+
+desc 'Test the diigo_sidebar plugin.'
+Rake::TestTask.new(:test) do |t|
+  t.libs << 'lib'
+  t.pattern = 'test/**/*_test.rb'
+  t.verbose = true
+end
+
+desc 'Generate documentation for the diigo_sidebar plugin.'
+Rake::RDocTask.new(:rdoc) do |rdoc|
+  rdoc.rdoc_dir = 'rdoc'
+  rdoc.title    = 'DeliciousSidebar'
+  rdoc.options << '--line-numbers' << '--inline-source'
+  rdoc.rdoc_files.include('README')
+  rdoc.rdoc_files.include('lib/**/*.rb')
+end

init.rb

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+require 'sidebar'
+require 'diigo_sidebar'
+
+DiigoSidebar.view_root = File.dirname(__FILE__) + '/views'
+

lib/diigo.rb

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+require 'open-uri'
+require 'time'
+require 'rexml/document'
+
+class Diigo
+  include REXML
+
+  attr_accessor :url, :items, :link, :title, :days
+
+  # This object holds given information of an item
+  class DiigoItem < Struct.new(:link, :title, :description, :description_link, :date)
+    def to_s; title end
+  end
+
+  # Pass the url to the RSS feed you would like to keep tabs on
+  # by default this will request the rss from the server right away and
+  # fill the items array
+  def initialize(url, refresh = true)
+    self.items  = []
+    self.url    = url
+    self.days   = {}
+    self.refresh if refresh
+  end
+
+  # This method lets you refresh the items in the items array
+  # useful if you keep the object cached in memory and
+  def refresh
+    open(@url) do |http|
+      parse(http.read)
+    end
+  end
+
+private
+
+  def parse(body)
+
+    xml = Document.new(body)
+
+    self.items        = []
+    self.link         = XPath.match(xml, "//channel/link/text()").first.value rescue ""
+    self.title        = XPath.match(xml, "//channel/title/text()").first.value rescue ""
+
+    XPath.each(xml, "//item/") do |elem|
+      item = DiigoItem.new
+      item.title       = XPath.match(elem, "title/text()").first.value rescue ""
+      item.link        = XPath.match(elem, "link/text()").first.value rescue ""
+      item.description = XPath.match(elem, "description/text()").first.value rescue ""
+      item.date        = Time.mktime(*ParseDate.parsedate(XPath.match(elem, "dc:date/text()").first.value)) rescue Time.now
+
+      item.description_link = item.description
+      item.description.gsub!(/<\/?a\b.*?>/, "") # remove all <a> tags
+      items << item
+    end
+
+    self.items = items.sort_by { |item| item.date }.reverse
+  end
+end

lib/diigo_sidebar.rb

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+class DiigoSidebar < Sidebar
+  display_name "Diigo"
+  description 'Bookmarks from <a href="http://diigo.com">Diigo</a> social bookmarking service'
+
+  setting :feed, nil, :label => 'Diigo Username'
+  setting :count, 10, :label => 'Items Limit'
+  setting :groupdate,   false, :input_type => :checkbox, :label => 'Group links by day'
+  setting :description, false, :input_type => :checkbox, :label => 'Show description'
+  setting :desclink,    false, :input_type => :checkbox, :label => 'Allow links in description'
+
+  lifetime 1.hour
+
+  def diigo
+    @diigo ||= Diigo.new("http://www.diigo.com/rss/user/" + feed) rescue nil
+  end
+
+  def parse_request(contents, params)
+    return unless diigo
+
+    if groupdate
+      @diigo.days = {}
+      @diigo.items.each_with_index do |d,i|
+        break if i >= count.to_i
+        index = d.date.strftime("%Y-%m-%d").to_sym
+        (@diigo.days[index] ||= []) << d
+      end
+      @diigo.days =
+        @diigo.days.sort_by { |d| d.to_s }.reverse.collect do |d|
+        {:container => d.last, :date => d.first}
+      end
+    else
+      @diigo.items = @diigo.items.slice(0, count.to_i)
+    end
+  end
+end

test/delicious_sidebar_test.rb

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+require 'test/unit'
+require File.dirname(__FILE__) + '/../../../../test/test_helper'
+
+class DeliciousSidebarTest < Test::Unit::TestCase
+  def test_sidebar_is_available
+    assert Sidebar.available_sidebars.include?(DeliciousSidebar)
+  end
+end

views/content.rhtml

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+<% if sidebar.diigo -%>
+  <div id="diigo">
+    <h3><a href="<%=h sidebar.diigo.link %>"><%=h sidebar.diigo.title %></a></h3>
+    <% (groupdate ? sidebar.diigo.days : [{ :container => sidebar.diigo.items }]).each do |group| -%>
+    <% if groupdate -%>
+    <span class="date"><%=h group[:date].to_s.to_date.strftime("%b %d") %></span>
+    <% end -%>
+    <ul>
+      <% for item in group[:container] %>
+      <li>
+        <a href="<%= item.link %>" title="<%= item.description%>"><%=h item.title %></a>
+        <% if item.description -%>
+          <br /><span class="desc"><%= desclink ? item.description_link : item.description %></span>
+        <% end -%>
+      </li>
+      <% end -%>
+    </ul>
+    <% end -%>
+  </div>
+<% end -%>