Countries with states

state.rb

class State
      STATES = {
          'US' => {
              'AL' => 'Alabama',
              'AK' => 'Alaska',
              'AZ' => 'Arizona',
              'AR' => 'Arkansas',
              'CA' => 'California',
              'CO' => 'Colorado',
              'CT' => 'Connecticut',
              'DE' => 'Delaware',
              'DC' => 'District of Columbia',
              'FL' => 'Florida',
              'GA' => 'Georgia',
              'HI' => 'Hawaii',
              'ID' => 'Idaho',
              'IL' => 'Illinois',
              'IN' => 'Indiana',
              'IA' => 'Iowa',
              'KS' => 'Kansas',
              'KY' => 'Kentucky',
              'LA' => 'Louisiana',
              'ME' => 'Maine',
              'MD' => 'Maryland',
              'MA' => 'Massachusetts',
              'MI' => 'Michigan',
              'MN' => 'Minnesota',
              'MS' => 'Mississippi',
              'MO' => 'Missouri',
              'MT' => 'Montana',
              'NE' => 'Nebraska',
              'NV' => 'Nevada',
              'NH' => 'New Hampshire',
              'NJ' => 'New Jersey',
              'NM' => 'New Mexico',
              'NY' => 'New York',
              'NC' => 'North Carolina',
              'ND' => 'North Dakota',
              'OH' => 'Ohio',
              'OK' => 'Oklahoma',
              'OR' => 'Oregon',
              'PA' => 'Pennsylvania',
              'PR' => 'Puerto Rico',
              'RI' => 'Rhode Island',
              'SC' => 'South Carolina',
              'SD' => 'South Dakota',
              'TN' => 'Tennessee',
              'TX' => 'Texas',
              'UT' => 'Utah',
              'VT' => 'Vermont',
              'VA' => 'Virginia',
              'WA' => 'Washington',
              'WV' => 'West Virginia',
              'WI' => 'Wisconsin',
              'WY' => 'Wyoming'
          },

          'CA' => {
              'AB' => 'Alberta',
              'BC' => 'British Columbia',
              'MB' => 'Manitoba',
              'NB' => 'New Brunswick',
              'NF' => 'Newfoundland',
              'NT' => 'Northwest Territories',
              'NS' => 'Nova Scotia',
              'NU' => 'Nunavut',
              'ON' => 'Ontario',
              'PE' => 'Prince Edward Island',
              'PQ' => 'Quebec',
              'SK' => 'Saskatchewan',
              'YT' => 'Yukon'
          },

          'MX' => {
              'AG' => 'Aguascalientes',
              'BJ' => 'Baja California',
              'BS' => 'Baja California Sur',
              'CP' => 'Campeche',
              'CH' => 'Chiapas',
              'CI' => 'Chihuahua',
              'CU' => 'Coahuila de Zaragoza',
              'CL' => 'Colima',
              'DF' => 'Distrito Federal',
              'DG' => 'Durango',
              'EM' => 'Estado Mexico',
              'GJ' => 'Guanajuato',
              'GR' => 'Guerrero',
              'HG' => 'Hidalgo', 'JA' => 'Jalisco',
              'MX' => 'Mexico', 'MH' => 'Michoacan',
              'MR' => 'Morelos', 'NA' => 'Nayarit',
              'NL' => 'Nuevo Leon', 'OA' => 'Oaxaca',
              'PU' => 'Puebla', 'QA' => 'Queretaro', 'QR' => 'Quintana Roo', 'SL' => 'San Luis Potosi',
              'SI' => 'Sinaloa', 'SO' => 'Sonora', 'TA' => 'Tabasco', 'TM' => 'Tamaulipas',
              'TL' => 'Tlaxca'
          },

          'BR' => {
              'de' => "State or Province2-digit Co", 'AC' => 'Acre', 'AL' => 'Alagoas', 'AP' => 'Amapa', 'AM' => 'Amazonas', 'BA' => 'Bahia', 'CE' => 'Ceara', 'DF' => 'Distrito Federal', 'ES' => 'Espirito Santo', 'GO' => 'Goias', 'MA' => 'Maranhao', 'MT' => 'Mato Grosso', 'MS' => 'Mato Grosso do Sul', 'MG' => 'Minas Gerais', 'PA' => 'Para', 'PB' => 'Paraiba', 'PR' => 'Parana', 'PE' => 'Pernambuco', 'PI' => 'Piaui', 'RN' => 'Rio Grande do Norte', 'RS' => 'Rio Grande do Sul', 'RJ' => 'Rio de Janeiro', 'RO' => 'Rondonia', 'RR' => 'Roraima', 'SC' => 'Santa Catarina', 'SP' => 'Sao Paulo', 'SE' => 'Sergipe', 'TO' => 'Tocantins'
          },

          'AU' => {
              'CT' => 'Australian Capital Territory', 'NS' => 'New South Wales', 'NT' => 'Northern Territory', 'QL' => 'Queensland', 'SA' => 'South Australia', 'TS' => 'Tasmania', 'VI' => 'Victoria', 'WA' => 'Western Australia'
          }
      }

      class << self
        def state?(country_code)
          STATES.include?(country_code.upcase)
        end

        def states(country_code)
          STATES[country_code.upcase] || {}
        end

        def state_name(country_code, state_code)
          (STATES[country_code.upcase] || {})[state_code.upcase]
        end
      end
    end