Sydney City Rail service updates to JSON

cityrail.rb

require 'nokogiri'
require 'open-uri'
require 'json'

METRO_URL = 'http://www.cityrail.info/service_updates'

doc = Nokogiri::HTML(open(METRO_URL).read)

lines = []
line_row2 = doc.xpath("//tbody[@id='serviceStatusLines:j_id631:tbody_element']/tr").each do |line_row|
  tds = line_row.xpath('.//td')
  lines.push({
    :line => tds.first.text.gsub(/[\n\t\r]/,''), 
    :status => tds.last.text.gsub(/[\n\t\r]/,'')
  })
end

File.open('cityrail_lines.json', 'w+') {|f| f.write(JSON::generate(lines))}
puts lines

# Output
# {:line=>"Eastern Suburbs & Illawarra Line", :status=>"Good service"}
# {:line=>"Bankstown Line", :status=>"Trackwork"}
# {:line=>"Inner West Line", :status=>"Good service"}
# {:line=>"Airport & East Hills Line", :status=>"Good service"}
# {:line=>"South Line", :status=>"Trackwork"}
# {:line=>"Cumberland Line", :status=>"Trackwork"}
# {:line=>"North Shore Line", :status=>"Good service"}
# {:line=>"Western Line", :status=>"Good service"}
# {:line=>"Carlingford Line", :status=>"Good service"}
# {:line=>"Olympic Park services", :status=>"Good service"}
# {:line=>"Northern Line", :status=>"Good service"}
# {:line=>"South Coast Line", :status=>"Good service"}
# {:line=>"Southern Highlands Line", :status=>"Good service"}
# {:line=>"Blue Mountains Line", :status=>"Good service"}
# {:line=>"Newcastle  & Central Coast Line", :status=>"Good service"}
# {:line=>"Hunter Line", :status=>"Good service"}