From 8437baa44b9e14f5593c3e9123e93d51dff50145 Mon Sep 17 00:00:00 2001 From: Jeremy Kemper Date: Sun, 4 Mar 2007 04:51:33 +0000 Subject: Out-of-range Time calculations transparently overflow to DateTime. Closes #7706. git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6305 5ecf4fe2-1ee6-0310-87b1-e25e094e27de --- .../active_support/core_ext/time/calculations.rb | 68 ++++++++++++++-------- 1 file changed, 44 insertions(+), 24 deletions(-) (limited to 'activesupport/lib/active_support/core_ext/time') diff --git a/activesupport/lib/active_support/core_ext/time/calculations.rb b/activesupport/lib/active_support/core_ext/time/calculations.rb index 70a4768d13..1c2daf0606 100644 --- a/activesupport/lib/active_support/core_ext/time/calculations.rb +++ b/activesupport/lib/active_support/core_ext/time/calculations.rb @@ -5,7 +5,7 @@ module ActiveSupport #:nodoc: module Calculations def self.included(base) #:nodoc: base.extend(ClassMethods) - + base.send(:alias_method, :plus_without_duration, :+) base.send(:alias_method, :+, :plus_with_duration) base.send(:alias_method, :minus_without_duration, :-) @@ -26,30 +26,50 @@ module ActiveSupport #:nodoc: month % 2 == 0 ? 31 : 30 end end + + # Returns a new Time if requested year can be accomodated by Ruby's Time class + # (i.e., if year is within either 1970..2038 or 1902..2038, depending on system architecture); + # otherwise returns a DateTime + def time_with_datetime_fallback(utc_or_local, year, month=1, day=1, hour=0, min=0, sec=0, usec=0) + ::Time.send(utc_or_local, year, month, day, hour, min, sec, usec) + rescue + offset = if utc_or_local.to_sym == :utc then 0 else ::DateTime.now.offset end + ::DateTime.civil(year, month, day, hour, min, sec, offset, 0) + end + + # wraps class method time_with_datetime_fallback with utc_or_local == :utc + def utc_time(*args) + time_with_datetime_fallback(:utc, *args) + end + + # wraps class method time_with_datetime_fallback with utc_or_local == :local + def local_time(*args) + time_with_datetime_fallback(:local, *args) + end end # Seconds since midnight: Time.now.seconds_since_midnight def seconds_since_midnight self.to_i - self.change(:hour => 0).to_i + (self.usec/1.0e+6) end - + # Returns a new Time where one or more of the elements have been changed according to the +options+ parameter. The time options - # (hour, minute, sec, usec) reset cascadingly, so if only the hour is passed, then minute, sec, and usec is set to 0. If the hour and + # (hour, minute, 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. def change(options) ::Time.send( - self.utc? ? :utc : :local, - options[:year] || self.year, - options[:month] || self.month, - options[:mday] || self.mday, - options[:hour] || self.hour, + self.utc? ? :utc_time : :local_time, + options[:year] || self.year, + options[:month] || self.month, + options[:mday] || self.mday, + options[:hour] || self.hour, options[:min] || (options[:hour] ? 0 : self.min), options[:sec] || ((options[:hour] || options[:min]) ? 0 : self.sec), options[:usec] || ((options[:hour] || options[:min] || options[:sec]) ? 0 : self.usec) ) end - - # Uses Date to provide precise Time calculations for years, months, and days. The +options+ parameter takes a hash with + + # Uses Date to provide precise Time calculations for years, months, and days. The +options+ parameter takes a hash with # any of these keys: :months, :days, :years. def advance(options) d = ::Date.new(year + (options.delete(:years) || 0), month, day) @@ -64,7 +84,7 @@ module ActiveSupport #:nodoc: self.since(-seconds) end - # Returns a new Time representing the time a number of seconds since the instance time, this is basically a wrapper around + # Returns a new Time representing the time a number of seconds since the instance time, this is basically a wrapper around #the Numeric extension. Do not use this method in combination with x.months, use months_since instead! def since(seconds) initial_dst = self.dst? ? 1 : 0 @@ -106,7 +126,7 @@ module ActiveSupport #:nodoc: def years_ago(years) change(:year => self.year - years) end - + def years_since(years) change(:year => self.year + years) end @@ -115,7 +135,7 @@ module ActiveSupport #:nodoc: def last_year years_ago(1) end - + # Short-hand for years_since(1) def next_year years_since(1) @@ -131,7 +151,7 @@ module ActiveSupport #:nodoc: def next_month months_since(1) end - + # Returns a new Time representing the "start" of this week (Monday, 0:00) def beginning_of_week days_to_monday = self.wday!=0 ? self.wday-1 : 6 @@ -139,13 +159,13 @@ module ActiveSupport #:nodoc: end alias :monday :beginning_of_week alias :at_beginning_of_week :beginning_of_week - + # Returns a new Time representing the start of the given day in next week (default is Monday). def next_week(day = :monday) days_into_week = { :monday => 0, :tuesday => 1, :wednesday => 2, :thursday => 3, :friday => 4, :saturday => 5, :sunday => 6} since(1.week).beginning_of_week.since(days_into_week[day].day).change(:hour => 0) end - + # Returns a new Time representing the start of the day (0:00) def beginning_of_day (self - self.seconds_since_midnight).change(:usec => 0) @@ -153,19 +173,19 @@ module ActiveSupport #:nodoc: 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) def end_of_day change(:hour => 23, :min => 59, :sec => 59) end - + # Returns a new Time representing the start of the month (1st of the month, 0:00) def beginning_of_month #self - ((self.mday-1).days + self.seconds_since_midnight) change(:mday => 1,:hour => 0, :min => 0, :sec => 0, :usec => 0) end alias :at_beginning_of_month :beginning_of_month - + # Returns a new Time representing the end of the month (last day of the month, 0:00) def end_of_month #self - ((self.mday-1).days + self.seconds_since_midnight) @@ -173,29 +193,29 @@ module ActiveSupport #:nodoc: change(:mday => last_day,:hour => 0, :min => 0, :sec => 0, :usec => 0) end alias :at_end_of_month :end_of_month - + # Returns a new Time representing the start of the quarter (1st of january, april, july, october, 0:00) def beginning_of_quarter beginning_of_month.change(:month => [10, 7, 4, 1].detect { |m| m <= self.month }) end alias :at_beginning_of_quarter :beginning_of_quarter - + # Returns a new Time representing the start of the year (1st of january, 0:00) def beginning_of_year change(:month => 1,:mday => 1,:hour => 0, :min => 0, :sec => 0, :usec => 0) end alias :at_beginning_of_year :beginning_of_year - + # Convenience method which returns a new Time representing the time 1 day ago def yesterday self.ago(1.day) end - + # Convenience method which returns a new Time representing the time 1 day since the instance time def tomorrow self.since(1.day) end - + def plus_with_duration(other) #:nodoc: if ActiveSupport::Duration === other other.since(self) -- cgit v1.2.3