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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'
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
# Return 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 = now.year)
if month == 2 && ::Date.gregorian_leap?(year)
29
else
COMMON_YEAR_DAYS_IN_MONTH[month]
end
end
# Returns <tt>Time.zone.now</tt> when <tt>Time.zone</tt> or <tt>config.time_zone</tt> are set, otherwise just returns <tt>Time.now</tt>.
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
# Seconds since midnight: Time.now.seconds_since_midnight
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 a new Time where one or more of the elements have been changed according
# to the +options+ parameter. The time options (<tt>:hour</tt>, <tt>:min</tt>,
# <tt>:sec</tt>, <tt>:usec</tt>) reset cascadingly, so if only the hour is passed,
# then minute, sec, and usec is set to 0. If the hour and minute is passed, then
# sec and usec is set to 0. The +options+ parameter takes a hash with any of these
# keys: <tt>:year</tt>, <tt>:month</tt>, <tt>:day</tt>, <tt>:hour</tt>, <tt>:min</tt>,
# <tt>:sec</tt>, <tt>:usec</tt>.
#
# 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)
new_usec = options.fetch(:usec, (options[:hour] || options[:min] || options[:sec]) ? 0 : Rational(nsec, 1000))
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
::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.
# The +options+ parameter takes a hash with any of these keys: <tt>:years</tt>,
# <tt>:months</tt>, <tt>:weeks</tt>, <tt>:days</tt>, <tt>:hours</tt>,
# <tt>:minutes</tt>, <tt>:seconds</tt>.
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)
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
#(self - seconds_since_midnight).change(usec: 0)
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 end of the day, 23:59:59.999999 (.999999999 in ruby1.9)
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 (.999999999 in ruby1.9)
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 (.999999999 in ruby1.9)
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
# Returns a Range representing the whole week of the current time.
# Week starts on start_day, default is <tt>Date.week_start</tt> or <tt>config.week_start</tt> when set.
def all_week(start_day = Date.beginning_of_week)
beginning_of_week(start_day)..end_of_week(start_day)
end
# Returns a Range representing the whole month of the current time.
def all_month
beginning_of_month..end_of_month
end
# Returns a Range representing the whole quarter of the current time.
def all_quarter
beginning_of_quarter..end_of_quarter
end
# Returns a Range representing the whole year of the current time.
def all_year
beginning_of_year..end_of_year
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 cause it's expensive
if 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
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