Geocode a list of addresses using OpenStreetMaps

geocode.rb

#!/usr/bin/env ruby
#

require 'open-uri'
require 'json'
require 'pp'
require 'uri'

File.open('locs').each_line do |location|
  url=URI.escape("http://nominatim.openstreetmap.org/search/#{location}?format=json&addressdetails=1")

  begin
    ts = Time.now
    geocoded = JSON.parse(open(url).read).sort{|x,y| x['importance'] <=> y['importance']}.first
    data = {
      :long => geocoded['lon'],
      :lat => geocoded['lat'],
      :city => geocoded['address']['city'],
      :country => geocoded['address']['country'],
      :state => geocoded['address']['state']
    }
    pp data
  rescue
    STDERR.puts "Cannot geocode: #{location}"
  ensure
    taken = Time.now.to_f - ts.to_f
    sleep(1 - taken) if 1 - taken > 0
  end

end