# File activesupport/lib/active_support/values/time_zone.rb, line 387
387:       def [](arg)
388:         case arg
389:           when String
390:             zones_map[arg] ||= lookup(arg)
391:           when Numeric, ActiveSupport::Duration
392:             arg *= 3600 if arg.abs <= 13
393:             all.find { |z| z.utc_offset == arg.to_i }
394:           else
395:             raise ArgumentError, "invalid argument to TimeZone[]: #{arg.inspect}"
396:         end
397:       end

     # File activesupport/lib/active_support/values/time_zone.rb, line 317
317:       def all
318:         @zones ||= zones_map.values.sort
319:       end

     # File activesupport/lib/active_support/values/time_zone.rb, line 297
297:     def self.find_tzinfo(name)
298:       require 'tzinfo' unless defined?(TZInfo)
299:       ::TZInfo::Timezone.get(MAPPING[name] || name)
300:     rescue TZInfo::InvalidTimezoneIdentifier
301:       nil
302:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 310
310:       def new(name)
311:         self[name]
312:       end

     # File activesupport/lib/active_support/values/time_zone.rb, line 181
181:     def initialize(name, utc_offset = nil, tzinfo = nil)
182:       @name = name
183:       @utc_offset = utc_offset
184:       @tzinfo = tzinfo || TimeZone.find_tzinfo(name)
185:       @current_period = nil
186:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 401
401:       def us_zones
402:         @us_zones ||= all.find_all { |z| z.name =~ /US|Arizona|Indiana|Hawaii|Alaska/ }
403:       end

     # File activesupport/lib/active_support/values/time_zone.rb, line 321
321:       def zones_map
322:         unless defined?(@zones_map)
323:           @zones_map = {}
324:           [[-39_600, "International Date Line West", "Midway Island", "Samoa" ],
325:            [-36_000, "Hawaii" ],
326:            [-32_400, "Alaska" ],
327:            [-28_800, "Pacific Time (US & Canada)", "Tijuana" ],
328:            [-25_200, "Mountain Time (US & Canada)", "Chihuahua", "Mazatlan",
329:                      "Arizona" ],
330:            [-21_600, "Central Time (US & Canada)", "Saskatchewan", "Guadalajara",
331:                      "Mexico City", "Monterrey", "Central America" ],
332:            [-18_000, "Eastern Time (US & Canada)", "Indiana (East)", "Bogota",
333:                      "Lima", "Quito" ],
334:            [-16_200, "Caracas" ],
335:            [-14_400, "Atlantic Time (Canada)", "La Paz", "Santiago" ],
336:            [-12_600, "Newfoundland" ],
337:            [-10_800, "Brasilia", "Buenos Aires", "Georgetown", "Greenland" ],
338:            [ -7_200, "Mid-Atlantic" ],
339:            [ -3_600, "Azores", "Cape Verde Is." ],
340:            [      0, "Dublin", "Edinburgh", "Lisbon", "London", "Casablanca",
341:                      "Monrovia", "UTC" ],
342:            [  3_600, "Belgrade", "Bratislava", "Budapest", "Ljubljana", "Prague",
343:                      "Sarajevo", "Skopje", "Warsaw", "Zagreb", "Brussels",
344:                      "Copenhagen", "Madrid", "Paris", "Amsterdam", "Berlin",
345:                      "Bern", "Rome", "Stockholm", "Vienna",
346:                      "West Central Africa" ],
347:            [  7_200, "Bucharest", "Cairo", "Helsinki", "Kyev", "Riga", "Sofia",
348:                      "Tallinn", "Vilnius", "Athens", "Istanbul", "Minsk",
349:                      "Jerusalem", "Harare", "Pretoria" ],
350:            [ 10_800, "Moscow", "St. Petersburg", "Volgograd", "Kuwait", "Riyadh",
351:                      "Nairobi", "Baghdad" ],
352:            [ 12_600, "Tehran" ],
353:            [ 14_400, "Abu Dhabi", "Muscat", "Baku", "Tbilisi", "Yerevan" ],
354:            [ 16_200, "Kabul" ],
355:            [ 18_000, "Ekaterinburg", "Islamabad", "Karachi", "Tashkent" ],
356:            [ 19_800, "Chennai", "Kolkata", "Mumbai", "New Delhi", "Sri Jayawardenepura" ],
357:            [ 20_700, "Kathmandu" ],
358:            [ 21_600, "Astana", "Dhaka", "Almaty",
359:                      "Novosibirsk" ],
360:            [ 23_400, "Rangoon" ],
361:            [ 25_200, "Bangkok", "Hanoi", "Jakarta", "Krasnoyarsk" ],
362:            [ 28_800, "Beijing", "Chongqing", "Hong Kong", "Urumqi",
363:                      "Kuala Lumpur", "Singapore", "Taipei", "Perth", "Irkutsk",
364:                      "Ulaan Bataar" ],
365:            [ 32_400, "Seoul", "Osaka", "Sapporo", "Tokyo", "Yakutsk" ],
366:            [ 34_200, "Darwin", "Adelaide" ],
367:            [ 36_000, "Canberra", "Melbourne", "Sydney", "Brisbane", "Hobart",
368:                      "Vladivostok", "Guam", "Port Moresby" ],
369:            [ 39_600, "Magadan", "Solomon Is.", "New Caledonia" ],
370:            [ 43_200, "Fiji", "Kamchatka", "Marshall Is.", "Auckland",
371:                      "Wellington" ],
372:            [ 46_800, "Nuku'alofa" ]].
373:            each do |offset, *places|
374:              places.each do |place|
375:                @zones_map[place] = create(place, offset)
376:              end
377:            end
378:         end
379:         @zones_map
380:       end

     # File activesupport/lib/active_support/values/time_zone.rb, line 205
205:     def <=>(zone)
206:       result = (utc_offset <=> zone.utc_offset)
207:       result = (name <=> zone.name) if result == 0
208:       result
209:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 213
213:     def =~(re)
214:       return true if name =~ re || MAPPING[name] =~ re
215:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 236
236:     def at(secs)
237:       utc = Time.at(secs).utc rescue DateTime.civil(1970).since(secs)
238:       utc.in_time_zone(self)
239:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 199
199:     def formatted_offset(colon=true, alternate_utc_string = nil)
200:       utc_offset == 0 && alternate_utc_string || utc_offset.to_utc_offset_s(colon)
201:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 226
226:     def local(*args)
227:       time = Time.utc_time(*args)
228:       ActiveSupport::TimeWithZone.new(nil, self, time)
229:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 282
282:     def local_to_utc(time, dst=true)
283:       tzinfo.local_to_utc(time, dst)
284:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 266
266:     def now
267:       Time.now.utc.in_time_zone(self)
268:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 250
250:     def parse(str, now=now)
251:       date_parts = Date._parse(str)
252:       return if date_parts.blank?
253:       time = Time.parse(str, now) rescue DateTime.parse(str)
254:       if date_parts[:offset].nil?
255:         ActiveSupport::TimeWithZone.new(nil, self, time)
256:       else
257:         time.in_time_zone(self)
258:       end
259:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 292
292:     def period_for_local(time, dst=true)
293:       tzinfo.period_for_local(time, dst)
294:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 287
287:     def period_for_utc(time)
288:       tzinfo.period_for_utc(time)
289:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 218
218:     def to_s
219:       "(GMT#{formatted_offset}) #{name}"
220:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 271
271:     def today
272:       tzinfo.now.to_date
273:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 188
188:     def utc_offset
189:       if @utc_offset
190:         @utc_offset
191:       else
192:         @current_period ||= tzinfo.current_period
193:         @current_period.utc_offset
194:       end
195:     end

     # File activesupport/lib/active_support/values/time_zone.rb, line 277
277:     def utc_to_local(time)
278:       tzinfo.utc_to_local(time)
279:     end