Parsing a Gemfile

gemfile parser

def self.create_from_gemfile_url ( url )
    return nil if url.nil?    
    if url.match(/^https:\/\/github.com\//)
      url = url.gsub("https://github.com", "https://raw.github.com")
      url = url.gsub("/blob/", "/")
    end
    uri = URI.parse( url )
    http = Net::HTTP.new(uri.host, uri.port)
    if uri.port == 443
      http.use_ssl = true
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE
    end        
    request = Net::HTTP::Get.new(uri.request_uri)
    gemfile = http.request(request).body
    return nil if gemfile.nil?
    
    project = Project.new
    project.dependencies = Array.new
    
    gemfile.each_line do |line|
      # if it starts not with gem skip the line
      line = line.strip
      if line.match(/^gem/).nil?
        next
      end
      line = line.gsub("gem ", "")
      line_elements = line.split(",")
      package = line_elements[0].strip
      package = package.gsub('"', '')
      package = package.gsub("'", "")
      
      dependency = Projectdependency.new
      dependency.name = package
      
      product = Product.find_by_key(package)
      if !product.nil?
        dependency.prod_key = product.prod_key
      end
      
      update_version_from_gemfile(line_elements, dependency, product)
      
      dependency.update_outdated
      if dependency.outdated?
        project.out_number = project.out_number + 1
      end      
      project.dependencies << dependency
    end
    project.dep_number = project.dependencies.count
    project
  end