vorkers_list.rb

require 'open-uri'
require 'nokogiri'

url = 'http://www.vorkers.com/field.php?ind_code=0003&f_code=0025'

charset = nil
html = open(url) do |f|
  charset = f.charset # 文字種別を取得
  f.read # htmlを読み込んで変数htmlに渡す
end

# htmlをパース(解析)してオブジェクトを作成
doc = Nokogiri::HTML.parse(html, nil, charset)

doc.xpath('//tr').each_with_index do |node,index|
  if index == 0
    next
  end

  puts [
    node.xpath('.//td[@class="comp_name"]').text,
    node.xpath('.//td[@class="comp_name"]/a').attribute('href').value,
    node.xpath('.//td[@class="num_answer"]').text,
    node.xpath('.//td[@class="total_score"]/span[@class="score_up"]').text
  ].join(',')
end