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#
# The following methods are copied from ActiveSupport's Time extension:
# activesupport/lib/active_support/core_ext/time/calculations.rb
#
class Time
#
# 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.
#
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
def since(seconds)
self + seconds
rescue
to_datetime.since(seconds)
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) 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:
# :year, :month, :day, :hour, :min, :sec, :usec.
#
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
end
class Date
# activesupport/lib/active_support/core_ext/date/calculations.rb
def advance(options)
options = options.dup
d = self
d = d >> options.delete(:years) * 12 if options[:years]
d = d >> options.delete(:months) if options[:months]
d = d + options.delete(:weeks) * 7 if options[:weeks]
d = d + options.delete(:days) if options[:days]
d
end
end
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