diff options
Diffstat (limited to 'activesupport/lib/active_support/values/time_zone.rb')
| -rw-r--r-- | activesupport/lib/active_support/values/time_zone.rb | 219 |
1 files changed, 162 insertions, 57 deletions
diff --git a/activesupport/lib/active_support/values/time_zone.rb b/activesupport/lib/active_support/values/time_zone.rb index 2699a064d7..d9e033e23b 100644 --- a/activesupport/lib/active_support/values/time_zone.rb +++ b/activesupport/lib/active_support/values/time_zone.rb @@ -1,13 +1,13 @@ -require 'tzinfo' -require 'thread_safe' -require 'active_support/core_ext/object/blank' -require 'active_support/core_ext/object/try' +# frozen_string_literal: true + +require "tzinfo" +require "concurrent/map" module ActiveSupport # The TimeZone class serves as a wrapper around TZInfo::Timezone instances. # It allows us to do the following: # - # * Limit the set of zones provided by TZInfo to a meaningful subset of 146 + # * Limit the set of zones provided by TZInfo to a meaningful subset of 134 # zones. # * Retrieve and display zones with a friendlier name # (e.g., "Eastern Time (US & Canada)" instead of "America/New_York"). @@ -23,19 +23,13 @@ module ActiveSupport # config.time_zone = 'Eastern Time (US & Canada)' # end # - # Time.zone # => #<TimeZone:0x514834...> + # Time.zone # => #<ActiveSupport::TimeZone:0x514834...> # Time.zone.name # => "Eastern Time (US & Canada)" # Time.zone.now # => Sun, 18 May 2008 14:30:44 EDT -04:00 - # - # The version of TZInfo bundled with Active Support only includes the - # definitions necessary to support the zones defined by the TimeZone class. - # If you need to use zones that aren't defined by TimeZone, you'll need to - # install the TZInfo gem (if a recent version of the gem is installed locally, - # this will be used instead of the bundled version.) class TimeZone # Keys are Rails TimeZone names, values are TZInfo identifiers. MAPPING = { - "International Date Line West" => "Pacific/Midway", + "International Date Line West" => "Etc/GMT+12", "Midway Island" => "Pacific/Midway", "American Samoa" => "Pacific/Pago_Pago", "Hawaii" => "Pacific/Honolulu", @@ -66,6 +60,7 @@ module ActiveSupport "Buenos Aires" => "America/Argentina/Buenos_Aires", "Montevideo" => "America/Montevideo", "Georgetown" => "America/Guyana", + "Puerto Rico" => "America/Puerto_Rico", "Greenland" => "America/Godthab", "Mid-Atlantic" => "Atlantic/South_Georgia", "Azores" => "Atlantic/Azores", @@ -92,7 +87,8 @@ module ActiveSupport "Paris" => "Europe/Paris", "Amsterdam" => "Europe/Amsterdam", "Berlin" => "Europe/Berlin", - "Bern" => "Europe/Berlin", + "Bern" => "Europe/Zurich", + "Zurich" => "Europe/Zurich", "Rome" => "Europe/Rome", "Stockholm" => "Europe/Stockholm", "Vienna" => "Europe/Vienna", @@ -186,19 +182,21 @@ module ActiveSupport "Samoa" => "Pacific/Apia" } - UTC_OFFSET_WITH_COLON = '%s%02d:%02d' - UTC_OFFSET_WITHOUT_COLON = UTC_OFFSET_WITH_COLON.tr(':', '') + UTC_OFFSET_WITH_COLON = "%s%02d:%02d" # :nodoc: + UTC_OFFSET_WITHOUT_COLON = UTC_OFFSET_WITH_COLON.tr(":", "") # :nodoc: + private_constant :UTC_OFFSET_WITH_COLON, :UTC_OFFSET_WITHOUT_COLON - @lazy_zones_map = ThreadSafe::Cache.new + @lazy_zones_map = Concurrent::Map.new + @country_zones = Concurrent::Map.new class << self # Assumes self represents an offset from UTC in seconds (as returned from # Time#utc_offset) and turns this into an +HH:MM formatted string. # - # TimeZone.seconds_to_utc_offset(-21_600) # => "-06:00" + # ActiveSupport::TimeZone.seconds_to_utc_offset(-21_600) # => "-06:00" def seconds_to_utc_offset(seconds, colon = true) format = colon ? UTC_OFFSET_WITH_COLON : UTC_OFFSET_WITHOUT_COLON - sign = (seconds < 0 ? '-' : '+') + sign = (seconds < 0 ? "-" : "+") hours = seconds.abs / 3600 minutes = (seconds.abs % 3600) / 60 format % [sign, hours, minutes] @@ -231,31 +229,59 @@ module ActiveSupport # Returns +nil+ if no such time zone is known to the system. def [](arg) case arg - when String + when String begin @lazy_zones_map[arg] ||= create(arg) rescue TZInfo::InvalidTimezoneIdentifier nil end - when Numeric, ActiveSupport::Duration - arg *= 3600 if arg.abs <= 13 - all.find { |z| z.utc_offset == arg.to_i } - else - raise ArgumentError, "invalid argument to TimeZone[]: #{arg.inspect}" + when Numeric, ActiveSupport::Duration + arg *= 3600 if arg.abs <= 13 + all.find { |z| z.utc_offset == arg.to_i } + else + raise ArgumentError, "invalid argument to TimeZone[]: #{arg.inspect}" end end # A convenience method for returning a collection of TimeZone objects # for time zones in the USA. def us_zones - @us_zones ||= all.find_all { |z| z.name =~ /US|Arizona|Indiana|Hawaii|Alaska/ } + country_zones(:us) + end + + # A convenience method for returning a collection of TimeZone objects + # for time zones in the country specified by its ISO 3166-1 Alpha2 code. + def country_zones(country_code) + code = country_code.to_s.upcase + @country_zones[code] ||= load_country_zones(code) + end + + def clear #:nodoc: + @lazy_zones_map = Concurrent::Map.new + @country_zones = Concurrent::Map.new + @zones = nil + @zones_map = nil end private + def load_country_zones(code) + country = TZInfo::Country.get(code) + country.zone_identifiers.flat_map do |tz_id| + if MAPPING.value?(tz_id) + MAPPING.inject([]) do |memo, (key, value)| + memo << self[key] if value == tz_id + memo + end + else + create(tz_id, nil, TZInfo::Timezone.new(tz_id)) + end + end.sort! + end + def zones_map - @zones_map ||= begin - MAPPING.each_key {|place| self[place]} # load all the zones - @lazy_zones_map + @zones_map ||= MAPPING.each_with_object({}) do |(name, _), zones| + timezone = self[name] + zones[name] = timezone if timezone end end end @@ -272,7 +298,6 @@ module ActiveSupport @name = name @utc_offset = utc_offset @tzinfo = tzinfo || TimeZone.find_tzinfo(name) - @current_period = nil end # Returns the offset of this time zone from UTC in seconds. @@ -280,14 +305,17 @@ module ActiveSupport if @utc_offset @utc_offset else - @current_period ||= tzinfo.current_period if tzinfo - @current_period.utc_offset if @current_period + tzinfo.current_period.utc_offset if tzinfo && tzinfo.current_period end end - # Returns the offset of this time zone as a formatted string, of the - # format "+HH:MM". - def formatted_offset(colon=true, alternate_utc_string = nil) + # Returns a formatted string of the offset from UTC, or an alternative + # string if the time zone is already UTC. + # + # zone = ActiveSupport::TimeZone['Central Time (US & Canada)'] + # zone.formatted_offset # => "-06:00" + # zone.formatted_offset(false) # => "-0600" + def formatted_offset(colon = true, alternate_utc_string = nil) utc_offset == 0 && alternate_utc_string || self.class.seconds_to_utc_offset(utc_offset, colon) end @@ -327,8 +355,48 @@ module ActiveSupport # Time.zone = 'Hawaii' # => "Hawaii" # Time.utc(2000).to_f # => 946684800.0 # Time.zone.at(946684800.0) # => Fri, 31 Dec 1999 14:00:00 HST -10:00 - def at(secs) - Time.at(secs).utc.in_time_zone(self) + # + # A second argument can be supplied to specify sub-second precision. + # + # Time.zone = 'Hawaii' # => "Hawaii" + # Time.at(946684800, 123456.789).nsec # => 123456789 + def at(*args) + Time.at(*args).utc.in_time_zone(self) + end + + # Method for creating new ActiveSupport::TimeWithZone instance in time zone + # of +self+ from an ISO 8601 string. + # + # Time.zone = 'Hawaii' # => "Hawaii" + # Time.zone.iso8601('1999-12-31T14:00:00') # => Fri, 31 Dec 1999 14:00:00 HST -10:00 + # + # If the time components are missing then they will be set to zero. + # + # Time.zone = 'Hawaii' # => "Hawaii" + # Time.zone.iso8601('1999-12-31') # => Fri, 31 Dec 1999 00:00:00 HST -10:00 + # + # If the string is invalid then an +ArgumentError+ will be raised unlike +parse+ + # which usually returns +nil+ when given an invalid date string. + def iso8601(str) + parts = Date._iso8601(str) + + raise ArgumentError, "invalid date" if parts.empty? + + time = Time.new( + parts.fetch(:year), + parts.fetch(:mon), + parts.fetch(:mday), + parts.fetch(:hour, 0), + parts.fetch(:min, 0), + parts.fetch(:sec, 0) + parts.fetch(:sec_fraction, 0), + parts.fetch(:offset, 0) + ) + + if parts[:offset] + TimeWithZone.new(time.utc, self) + else + TimeWithZone.new(nil, self, time) + end end # Method for creating new ActiveSupport::TimeWithZone instance in time zone @@ -347,10 +415,42 @@ module ActiveSupport # components are supplied, then the day of the month defaults to 1: # # Time.zone.parse('Mar 2000') # => Wed, 01 Mar 2000 00:00:00 HST -10:00 - def parse(str, now=now()) + # + # If the string is invalid then an +ArgumentError+ could be raised. + def parse(str, now = now()) parts_to_time(Date._parse(str, false), now) end + # Method for creating new ActiveSupport::TimeWithZone instance in time zone + # of +self+ from an RFC 3339 string. + # + # Time.zone = 'Hawaii' # => "Hawaii" + # Time.zone.rfc3339('2000-01-01T00:00:00Z') # => Fri, 31 Dec 1999 14:00:00 HST -10:00 + # + # If the time or zone components are missing then an +ArgumentError+ will + # be raised. This is much stricter than either +parse+ or +iso8601+ which + # allow for missing components. + # + # Time.zone = 'Hawaii' # => "Hawaii" + # Time.zone.rfc3339('1999-12-31') # => ArgumentError: invalid date + def rfc3339(str) + parts = Date._rfc3339(str) + + raise ArgumentError, "invalid date" if parts.empty? + + time = Time.new( + parts.fetch(:year), + parts.fetch(:mon), + parts.fetch(:mday), + parts.fetch(:hour), + parts.fetch(:min), + parts.fetch(:sec) + parts.fetch(:sec_fraction, 0), + parts.fetch(:offset) + ) + + TimeWithZone.new(time.utc, self) + end + # Parses +str+ according to +format+ and returns an ActiveSupport::TimeWithZone. # # Assumes that +str+ is a time in the time zone +self+, @@ -371,7 +471,7 @@ module ActiveSupport # components are supplied, then the day of the month defaults to 1: # # Time.zone.strptime('Mar 2000', '%b %Y') # => Wed, 01 Mar 2000 00:00:00 HST -10:00 - def strptime(str, format, now=now()) + def strptime(str, format, now = now()) parts_to_time(DateTime._strptime(str, format), now) end @@ -384,7 +484,7 @@ module ActiveSupport time_now.utc.in_time_zone(self) end - # Return the current date in this time zone. + # Returns the current date in this time zone. def today tzinfo.now.to_date end @@ -408,7 +508,7 @@ module ActiveSupport # Adjust the given time to the simultaneous time in UTC. Returns a # Time.utc() instance. - def local_to_utc(time, dst=true) + def local_to_utc(time, dst = true) tzinfo.local_to_utc(time, dst) end @@ -420,8 +520,8 @@ module ActiveSupport # Available so that TimeZone instances respond like TZInfo::Timezone # instances. - def period_for_local(time, dst=true) - tzinfo.period_for_local(time, dst) + def period_for_local(time, dst = true) + tzinfo.period_for_local(time, dst) { |periods| periods.last } end def periods_for_local(time) #:nodoc: @@ -429,29 +529,34 @@ module ActiveSupport end def init_with(coder) #:nodoc: - initialize(coder['name']) + initialize(coder["name"]) end def encode_with(coder) #:nodoc: - coder.tag ="!ruby/object:#{self.class}" - coder.map = { 'name' => tzinfo.name } + coder.tag = "!ruby/object:#{self.class}" + coder.map = { "name" => tzinfo.name } end private def parts_to_time(parts, now) + raise ArgumentError, "invalid date" if parts.nil? return if parts.empty? - time = Time.new( - parts.fetch(:year, now.year), - parts.fetch(:mon, now.month), - parts.fetch(:mday, parts[:year] || parts[:mon] ? 1 : now.day), - parts.fetch(:hour, 0), - parts.fetch(:min, 0), - parts.fetch(:sec, 0) + parts.fetch(:sec_fraction, 0), - parts.fetch(:offset, 0) - ) - - if parts[:offset] + if parts[:seconds] + time = Time.at(parts[:seconds]) + else + time = Time.new( + parts.fetch(:year, now.year), + parts.fetch(:mon, now.month), + parts.fetch(:mday, parts[:year] || parts[:mon] ? 1 : now.day), + parts.fetch(:hour, 0), + parts.fetch(:min, 0), + parts.fetch(:sec, 0) + parts.fetch(:sec_fraction, 0), + parts.fetch(:offset, 0) + ) + end + + if parts[:offset] || parts[:seconds] TimeWithZone.new(time.utc, self) else TimeWithZone.new(nil, self, time) |