Class: PolyrexFeedReader

Inherits:
Object
  • Object
show all
Defined in:
lib/polyrex-feed-reader.rb

Instance Method Summary collapse

Constructor Details

#initialize(polyrex) ⇒ PolyrexFeedReader

Returns a new instance of PolyrexFeedReader.



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# File 'lib/polyrex-feed-reader.rb', line 29

def initialize(polyrex)

  @polyrex = polyrex

end

Instance Method Details

#fetch_feeds ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 35

def fetch_feeds()

  feeds = @polyrex.xpath('//column/records/section/records/feed/summary')

  feeds.each do |feed|

    puts "fetching %s " % feed.text('rss_url').inspect

    rtd = RSStoDynarex.new feed.text('rss_url')
    dynarex = rtd.to_dynarex
    dynarex.save "%s.xml" % feed.text('title')\
                        .downcase.gsub(/\s/,'').gsub(/\W/,'_')
  end
end

#refresh ⇒ Object Also known as: update_doc 



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# File 'lib/polyrex-feed-reader.rb', line 50

def refresh

  @polyrex.records.each do |column|

    column.records.each do |section| 
 
      section.records.each do |feed|

        filename = "%s.xml" % feed.title\
                            .downcase.gsub(/\s/,'').gsub(/\W/,'_')

        d = Dynarex.new filename
        feed.last_accessed = datetimestamp()
        feed.last_modified = datetimestamp() if feed.last_modified.empty?

        items = d.to_h[0..2]

        if feed.records.length > 0 and \
                                items.first[:title] == feed.item[0].title then
          feed.recent = recency(feed.last_modified)
          next 
        end

        feed.recent = '1hot'
        feed.records.remove_all
        items.each.with_index do |x, i|

          h = {title: x[:title], link: x[:link]}

          if i == 0 then

            raw_desc = CGI.unescapeHTML(x[:description]).gsub(/<\/?[^>]*>/, "")
            desc = raw_desc.length > 300 ? raw_desc[0..296] + ' ...' : raw_desc
            h[:description] = desc
          end

          feed.create.item h
        end

        feed.last_modified = datetimestamp()
      end
    end
  end
end

#save_css(filepath = 'feeds.css') ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 97

def save_css(filepath='feeds.css')

  lib = File.dirname(__FILE__)
  css_buffer = File.read(lib + '/feeds.css')
  #css_buffer = File.read('feeds.css')

  File.write filepath, css_buffer
end

#save_html(filepath = 'feeds.html') ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 106

def save_html(filepath='feeds.html')

  lib = File.dirname(__FILE__)
  xsl_buffer = File.read(lib + '/feeds.xsl')
  #xsl_buffer = File.read('feeds.xsl')

  xslt  = Nokogiri::XSLT(xsl_buffer)
  html = xslt.transform(Nokogiri::XML(@polyrex.to_xml)).to_s
  File.write filepath, html
end

#save_xml(filepath = 'feeds.xml') ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 117

def save_xml(filepath='feeds.xml')
  @polyrex.save filepath, pretty: true
end