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 27

def initialize(polyrex)

  @polyrex = polyrex

end

Instance Method Details

#feed_count ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 33

def feed_count()
  @polyrex.xpath 'count(records/column/records/section/records/feed)'
end

#feeds_to_html ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 37

def feeds_to_html()

  feeds do |feed, filename|

    next if nothing_new? feed
    puts "transforming %s " % filename
    xsltproc 'dynarex-feed.xsl', File.read(filename), filename.sub(/xml$/,'html')
  end
end

#fetch_feeds ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 47

def fetch_feeds()



  feeds do |feed, filename|

    next if nothing_new? feed
    puts "fetching %s " % feed.rss_url.inspect
    
    rtd = RSStoDynarex.new feed.rss_url
    dynarex = rtd.to_dynarex

    dynarex.save(filename) do |xml| 
      a = xml.lines.to_a
      line1 = a.shift
      a.unshift %Q{<?xml-stylesheet title="XSL_formatting" type="text/xsl" href="dynarex-feed.xsl"?>\n}
      a.unshift W3CENTITIES
      a.unshift line1
      a.join
    end    

  end

end

#refresh ⇒ Object Also known as: update_doc 



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# File 'lib/polyrex-feed-reader.rb', line 72

def refresh

  @datetimestamp = datetimestamp()

  feeds do |feed, filename|

    d = Dynarex.new filename

    feed.last_accessed = @datetimestamp
    feed.last_modified = @datetimestamp if feed.last_modified.empty?
    feed.xhtml = filename
    feed.url = d.summary[:link]

    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

    puts 'adding : ' + filename.inspect

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

      h = {
        title: x[:title],
        link:  x[:link],
        local_link: "%s#%s" % [filename.sub(/xml$/,'html'),i]
      }

      if i == 0 and feed.important != 'n' 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

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



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# File 'lib/polyrex-feed-reader.rb', line 122

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 131

def save_html(filepath='feeds.html')
  xsltproc 'feeds.xsl', @polyrex.to_xml, filepath
end

#save_latestnews(filename = 'latest.html') ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 135

def save_latestnews(filename='latest.html')

  last_modified = @polyrex.summary.last_modified
  e = @polyrex.xpath 'records/column/records/section/records/'\
    + 'feed[summary/last_modified="' + last_modified + '"]'

  dynarex = Dynarex.new 'feeds/feed(source, title, link, description)'

  e.each() do |feed|

    summary = feed.element 'records/item/summary'

    record = {
           source: feed.text('summary/title'),
      source_link: feed.text('summary/url'),
            title: summary.text('title'),
             link: summary.text('link'),
      description: summary.text('description')
    }
    dynarex.create record
  end

  filename = 'latest.xml'
#=begin
  dynarex.save(filename) do |xml| 
    a = xml.lines.to_a
    line1 = a.shift
    a.unshift %Q{<?xml-stylesheet title="XSL_formatting" type="text/xsl" href="latest.xsl"?>\n}
    a.unshift W3CENTITIES
    a.unshift line1
    a.join
  end
#=end

  xsltproc 'latest.xsl', dynarex.to_xml, filename 
end

#save_opml(filepath = 'feeds.opml') ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 172

def save_opml(filepath='feeds.opml')
  xsltproc 'opml-feeds.xsl', @polyrex.to_xml, filepath
end

#save_sections ⇒ Object 



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# File 'lib/polyrex-feed-reader.rb', line 176

def save_sections()

    @polyrex.records.each do |column|

      column.records.each do |section|

        d = Dynarex.new 'section[title]/feed(source, title, link, description)'
        d.summary[:title] = section.title

        section.records.each.with_index do |feed, i|

          next if feed.item.length < 1
          filename = "%s.html#%s" % \
                            [feed.title.to_s.downcase.gsub(/\s/,'').gsub(/\W/,'_'), i]

          h = {source: feed.title, title: feed.item[0].title, link: filename, \
                  description: feed.item[0].description}
          d.create h
          puts h.inspect
        end

        filename = section.title.to_s.downcase.gsub(/\W/,'') + '.xml'
        d.save filename
      end
    end
end

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



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# File 'lib/polyrex-feed-reader.rb', line 203

def save_xml(filepath='feeds.xml')
  @polyrex.summary.last_modified = @datetimestamp
  @polyrex.summary.feed_count = @polyrex.xpath \
              'count(records/column/records/section/records/feed)'
  @polyrex.save filepath, pretty: true
end