require 'active_support/duration' require 'active_support/core_ext/time/conversions' require 'active_support/time_with_zone' require 'active_support/core_ext/time/zones' require 'active_support/core_ext/date_and_time/calculations' require 'active_support/core_ext/date/calculations' class Time include DateAndTime::Calculations COMMON_YEAR_DAYS_IN_MONTH = [nil, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] class << self # Overriding case equality method so that it returns true for ActiveSupport::TimeWithZone instances def ===(other) super || (self == Time && other.is_a?(ActiveSupport::TimeWithZone)) end # Returns the number of days in the given month. # If no year is specified, it will use the current year. def days_in_month(month, year = current.year) if month == 2 && ::Date.gregorian_leap?(year) 29 else COMMON_YEAR_DAYS_IN_MONTH[month] end end # Returns the number of days in the given year. # If no year is specified, it will use the current year. def days_in_year(year = current.year) days_in_month(2, year) + 337 end # Returns Time.zone.now when Time.zone or config.time_zone are set, otherwise just returns Time.now. def current ::Time.zone ? ::Time.zone.now : ::Time.now end # Layers additional behavior on Time.at so that ActiveSupport::TimeWithZone and DateTime # instances can be used when called with a single argument def at_with_coercion(*args) return at_without_coercion(*args) if args.size != 1 # Time.at can be called with a time or numerical value time_or_number = args.first if time_or_number.is_a?(ActiveSupport::TimeWithZone) || time_or_number.is_a?(DateTime) at_without_coercion(time_or_number.to_f).getlocal else at_without_coercion(time_or_number) end end alias_method :at_without_coercion, :at alias_method :at, :at_with_coercion end # Returns the number of seconds since 00:00:00. # # Time.new(2012, 8, 29, 0, 0, 0).seconds_since_midnight # => 0.0 # Time.new(2012, 8, 29, 12, 34, 56).seconds_since_midnight # => 45296.0 # Time.new(2012, 8, 29, 23, 59, 59).seconds_since_midnight # => 86399.0 def seconds_since_midnight to_i - change(:hour => 0).to_i + (usec / 1.0e+6) end # Returns the number of seconds until 23:59:59. # # Time.new(2012, 8, 29, 0, 0, 0).seconds_until_end_of_day # => 86399 # Time.new(2012, 8, 29, 12, 34, 56).seconds_until_end_of_day # => 41103 # Time.new(2012, 8, 29, 23, 59, 59).seconds_until_end_of_day # => 0 def seconds_until_end_of_day end_of_day.to_i - to_i end # Returns the fraction of a second as a +Rational+ # # Time.new(2012, 8, 29, 0, 0, 0.5).sec_fraction # => (1/2) def sec_fraction subsec end # Returns a new Time where one or more of the elements have been changed according # to the +options+ parameter. The time options (:hour, :min, # :sec, :usec, :nsec) reset cascadingly, so if only # the hour is passed, then minute, sec, usec and nsec is set to 0. If the hour # and minute is passed, then sec, usec and nsec is set to 0. The +options+ # parameter takes a hash with any of these keys: :year, :month, # :day, :hour, :min, :sec, :usec # :nsec. Pass either :usec or :nsec, not both. # # Time.new(2012, 8, 29, 22, 35, 0).change(day: 1) # => Time.new(2012, 8, 1, 22, 35, 0) # Time.new(2012, 8, 29, 22, 35, 0).change(year: 1981, day: 1) # => Time.new(1981, 8, 1, 22, 35, 0) # Time.new(2012, 8, 29, 22, 35, 0).change(year: 1981, hour: 0) # => Time.new(1981, 8, 29, 0, 0, 0) def change(options) new_year = options.fetch(:year, year) new_month = options.fetch(:month, month) new_day = options.fetch(:day, day) new_hour = options.fetch(:hour, hour) new_min = options.fetch(:min, options[:hour] ? 0 : min) new_sec = options.fetch(:sec, (options[:hour] || options[:min]) ? 0 : sec) if new_nsec = options[:nsec] raise ArgumentError, "Can't change both :nsec and :usec at the same time: #{options.inspect}" if options[:usec] new_usec = Rational(new_nsec, 1000) else new_usec = options.fetch(:usec, (options[:hour] || options[:min] || options[:sec]) ? 0 : Rational(nsec, 1000)) end if utc? ::Time.utc(new_year, new_month, new_day, new_hour, new_min, new_sec, new_usec) elsif zone ::Time.local(new_year, new_month, new_day, new_hour, new_min, new_sec, new_usec) else raise ArgumentError, 'argument out of range' if new_usec >= 1000000 ::Time.new(new_year, new_month, new_day, new_hour, new_min, new_sec + (new_usec.to_r / 1000000), utc_offset) end end # Uses Date to provide precise Time calculations for years, months, and days # according to the proleptic Gregorian calendar. The +options+ parameter # takes a hash with any of these keys: :years, :months, # :weeks, :days, :hours, :minutes, # :seconds. # # Time.new(2015, 8, 1, 14, 35, 0).advance(seconds: 1) # => 2015-08-01 14:35:01 -0700 # Time.new(2015, 8, 1, 14, 35, 0).advance(minutes: 1) # => 2015-08-01 14:36:00 -0700 # Time.new(2015, 8, 1, 14, 35, 0).advance(hours: 1) # => 2015-08-01 15:35:00 -0700 # Time.new(2015, 8, 1, 14, 35, 0).advance(days: 1) # => 2015-08-02 14:35:00 -0700 # Time.new(2015, 8, 1, 14, 35, 0).advance(weeks: 1) # => 2015-08-08 14:35:00 -0700 def advance(options) unless options[:weeks].nil? options[:weeks], partial_weeks = options[:weeks].divmod(1) options[:days] = options.fetch(:days, 0) + 7 * partial_weeks end unless options[:days].nil? options[:days], partial_days = options[:days].divmod(1) options[:hours] = options.fetch(:hours, 0) + 24 * partial_days end d = to_date.advance(options) d = d.gregorian if d.julian? time_advanced_by_date = change(:year => d.year, :month => d.month, :day => d.day) seconds_to_advance = \ options.fetch(:seconds, 0) + options.fetch(:minutes, 0) * 60 + options.fetch(:hours, 0) * 3600 if seconds_to_advance.zero? time_advanced_by_date else time_advanced_by_date.since(seconds_to_advance) end end # Returns a new Time representing the time a number of seconds ago, this is basically a wrapper around the Numeric extension def ago(seconds) since(-seconds) end # Returns a new Time representing the time a number of seconds since the instance time def since(seconds) self + seconds rescue to_datetime.since(seconds) end alias :in :since # Returns a new Time representing the start of the day (0:00) def beginning_of_day change(:hour => 0) end alias :midnight :beginning_of_day alias :at_midnight :beginning_of_day alias :at_beginning_of_day :beginning_of_day # Returns a new Time representing the middle of the day (12:00) def middle_of_day change(:hour => 12) end alias :midday :middle_of_day alias :noon :middle_of_day alias :at_midday :middle_of_day alias :at_noon :middle_of_day alias :at_middle_of_day :middle_of_day # Returns a new Time representing the end of the day, 23:59:59.999999 def end_of_day change( :hour => 23, :min => 59, :sec => 59, :usec => Rational(999999999, 1000) ) end alias :at_end_of_day :end_of_day # Returns a new Time representing the start of the hour (x:00) def beginning_of_hour change(:min => 0) end alias :at_beginning_of_hour :beginning_of_hour # Returns a new Time representing the end of the hour, x:59:59.999999 def end_of_hour change( :min => 59, :sec => 59, :usec => Rational(999999999, 1000) ) end alias :at_end_of_hour :end_of_hour # Returns a new Time representing the start of the minute (x:xx:00) def beginning_of_minute change(:sec => 0) end alias :at_beginning_of_minute :beginning_of_minute # Returns a new Time representing the end of the minute, x:xx:59.999999 def end_of_minute change( :sec => 59, :usec => Rational(999999999, 1000) ) end alias :at_end_of_minute :end_of_minute # Returns a Range representing the whole day of the current time. def all_day beginning_of_day..end_of_day end def plus_with_duration(other) #:nodoc: if ActiveSupport::Duration === other other.since(self) else plus_without_duration(other) end end alias_method :plus_without_duration, :+ alias_method :+, :plus_with_duration def minus_with_duration(other) #:nodoc: if ActiveSupport::Duration === other other.until(self) else minus_without_duration(other) end end alias_method :minus_without_duration, :- alias_method :-, :minus_with_duration # Time#- can also be used to determine the number of seconds between two Time instances. # We're layering on additional behavior so that ActiveSupport::TimeWithZone instances # are coerced into values that Time#- will recognize def minus_with_coercion(other) other = other.comparable_time if other.respond_to?(:comparable_time) other.is_a?(DateTime) ? to_f - other.to_f : minus_without_coercion(other) end alias_method :minus_without_coercion, :- alias_method :-, :minus_with_coercion # Layers additional behavior on Time#<=> so that DateTime and ActiveSupport::TimeWithZone instances # can be chronologically compared with a Time def compare_with_coercion(other) # we're avoiding Time#to_datetime and Time#to_time because they're expensive if other.class == Time compare_without_coercion(other) elsif other.is_a?(Time) compare_without_coercion(other.to_time) else to_datetime <=> other end end alias_method :compare_without_coercion, :<=> alias_method :<=>, :compare_with_coercion # Layers additional behavior on Time#eql? so that ActiveSupport::TimeWithZone instances # can be eql? to an equivalent Time def eql_with_coercion(other) # if other is an ActiveSupport::TimeWithZone, coerce a Time instance from it so we can do eql? comparison other = other.comparable_time if other.respond_to?(:comparable_time) eql_without_coercion(other) end alias_method :eql_without_coercion, :eql? alias_method :eql?, :eql_with_coercion end