wilkinson.rb

#!/usr/env ruby
# vim:fileencoding=utf-8

require "rubygems"
require "mechanize"

id = "example@example.com"
pwd = "password"

agent = Mechanize.new
agent.post_connect_hooks << Proc.new {|params|
 params[:response_body] = NKF.nkf("-wm0S",params[:response_body]).sub(/Shift_JIS/,"utf-8")
 params[:response]["Content-Type"] = "text/html; charset=utf-8"
}

page = agent.get("https://www.kakuyasu.co.jp/ec/common/CSfLogin.jsp")
page.forms[1].ID = id
page.forms[1].PWD = pwd
agent.submit(page.forms[1])

page = agent.get("http://www.kakuyasu.co.jp/ec/disp/CSfLastGoodsPage_001.jsp?GOODS_NO=10388")
if page.body =~ /【1ケース\(24本入り\)】[\s\S]+エリア内なら2時間枠/
  `/usr/local/bin/growlnotify -t '#{Time.now}' -m 'ウィルキンソンジンジャエール在庫あります'`
end