Class: Finder

Inherits:
Object
  • Object
show all
Defined in:
lib/uk_ranking.rb

Instance Method Summary collapse

Instance Method Details

#find(options) ⇒ Object

keyword, url, limit, engine, res_per_page



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# File 'lib/uk_ranking.rb', line 52

def find(options) #keyword, url, limit, engine, res_per_page
 options[:keyword].gsub!(/\s/, '+')
 request_url, results_selector, cite_selector = case options[:engine].to_sym
 when :bing
   ["http://www.bing.com/search?q=#{options[:keyword]}&count=#{options[:res_per_page]}&first=", '#wg0 > li', 'cite']
 when :google
   ["http://www.google.co.uk/search?q=#{options[:keyword]}&num=#{options[:res_per_page]}&start=", '#ires > ol > li', 'cite']
 when :googleUS
   ["http://www.google.com/search?q=#{options[:keyword]}&num=#{options[:res_per_page]}&start=", '#ires > ol > li', 'cite']
 when :yahoo
   ["http://search.yahoo.com/search?p=#{options[:keyword]}&n=#{options[:res_per_page]}&b=", '#web > ol > li', 'span']
 end

 count, rank = 0, nil

 loop {
   html_response = Net::HTTP.get_response(URI.parse("#{request_url}#{count}")).body
   html_results = Nokogiri.parse(html_response).css(results_selector)
 
  if html_results.detect{ |result| result.css("#productbox") }
  #if html_results.index(html_results.detect{ |result| result.css(cite_selector).text.match Regexp.new(options[:url]) })
         
    rank = html_results.index(html_results.detect{ |result| result.css(cite_selector).text.match Regexp.new(options[:url]) })

    if count > options[:limit]
       break
    elsif rank
       rank += count - 1
       break
    end
     count += options[:res_per_page]
     
  else
    rank = html_results.index(html_results.detect{ |result| result.css(cite_selector).text.match Regexp.new(options[:url]) })

    if count > options[:limit]
      break
    elsif rank
      rank += count
      break
    end
    count += options[:res_per_page]
 end#If HTML
 }
 rank ? rank.next : nil
end