lib/page_rankr/backlinks/google.rb in PageRankr-1.4.3 vs lib/page_rankr/backlinks/google.rb in PageRankr-1.5.0

@@ -1,15 +1,19 @@
 require 'cgi'
+require 'json'
 
 module PageRankr
   class Backlinks < Tracker
     class Google < Backlink
-      def url(site)
-        "http://www.google.com/search?q=link%3A%22#{CGI.escape(site)}%22"
+      
+      # overloaded to use Google's AJAX search API
+      # http://code.google.com/apis/ajaxsearch/documentation/
+      def initialize(site)
+        @backlinks = clean JSON.parse( open( url(site)).read )["responseData"]["cursor"]["estimatedResultCount"].to_s
       end
       
-      def xpath
-        "//div[@id='resultStats']/text()"
+      def url(site)
+        "http://ajax.googleapis.com/ajax/services/search/web?v=1.0&rsz=1&q=link%3A#{CGI.escape(site)}"
       end
     end
   end
 end
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