ru_tracking.rb

#!/usr/bin/ruby -wKU
# -*- coding: utf-8 -*-

require 'cgi'
require 'uri'
require 'net/http'
require 'nokogiri'
require 'pp'

# TODO: think about easily add new tracking system!
class Tracking
  @@ru_url = 'http://info.russianpost.ru/servlet/post_item'
  @@ru_params = {
    'action'           => 'search',
    'searchType'       => 'barCode',
    'barCode'          => 'XXXXXXXXXXXXX',
    'show_form'        => 'yes',
    'page'             => '1',
    'barCodeSearchBtn' => 'Поиск'
  }

  def ru_track(bar_code)
    @@ru_params['barCode'] = bar_code

    x = Net::HTTP.post_form(URI.parse(@@ru_url), @@ru_params)
    doc = Nokogiri::HTML(x.body)
    rows = doc.xpath('//table[@width=""]/tr[@valign="top"]')

    details = rows.collect do |row|
      detail = {}
      [
       [:op,        'td[1]/text()'],
       [:date,      'td[2]/text()'],
       [:cur_index, 'td[3]/text()'],
       [:cur_addr,  'td[4]/text()'],
       [:attr,      'td[5]/text()'],
       [:weight,    'td[6]/text()'],
       [:price,     'td[7]/text()'],
       [:cod,       'td[8]/text()'],
       [:to_index,  'td[9]/text()'],
       [:to_addr,   'td[10]/text()'],
      ].collect do |name, xpath|
        detail[name] = row.at_xpath(xpath).text.strip
      end
      detail
    end
  end
end

if __FILE__ == $PROGRAM_NAME
  tracks = ['xxxxxxxxxxxxx', 'yyyyyyyyyyyyy', 'zzzzzzzzzzzzz']

  t = Tracking.new

  tracks.each do |tr|
    details = t.ru_track(tr)

    puts tr
    details.each do |i|
      puts i.values.flatten.join(" ")
    end
    puts
  end
end