/usr/lib/ruby/vendor_ruby/active_support/core_ext/date_time/calculations.rb is in ruby-activesupport 2:4.2.10-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 | require 'date'
class DateTime
class << self
# Returns <tt>Time.zone.now.to_datetime</tt> when <tt>Time.zone</tt> or
# <tt>config.time_zone</tt> are set, otherwise returns
# <tt>Time.now.to_datetime</tt>.
def current
::Time.zone ? ::Time.zone.now.to_datetime : ::Time.now.to_datetime
end
end
# Seconds since midnight: DateTime.now.seconds_since_midnight.
def seconds_since_midnight
sec + (min * 60) + (hour * 3600)
end
# Returns the number of seconds until 23:59:59.
#
# DateTime.new(2012, 8, 29, 0, 0, 0).seconds_until_end_of_day # => 86399
# DateTime.new(2012, 8, 29, 12, 34, 56).seconds_until_end_of_day # => 41103
# DateTime.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+
#
# DateTime.new(2012, 8, 29, 0, 0, 0.5).subsec # => (1/2)
def subsec
sec_fraction
end
# Returns a new DateTime 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>) reset cascadingly, so if only the hour is
# passed, then minute and sec is set to 0. If the hour and minute is passed,
# then sec 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>:offset</tt>, <tt>:start</tt>.
#
# DateTime.new(2012, 8, 29, 22, 35, 0).change(day: 1) # => DateTime.new(2012, 8, 1, 22, 35, 0)
# DateTime.new(2012, 8, 29, 22, 35, 0).change(year: 1981, day: 1) # => DateTime.new(1981, 8, 1, 22, 35, 0)
# DateTime.new(2012, 8, 29, 22, 35, 0).change(year: 1981, hour: 0) # => DateTime.new(1981, 8, 29, 0, 0, 0)
def change(options)
::DateTime.civil(
options.fetch(:year, year),
options.fetch(:month, month),
options.fetch(:day, day),
options.fetch(:hour, hour),
options.fetch(:min, options[:hour] ? 0 : min),
options.fetch(:sec, (options[:hour] || options[:min]) ? 0 : sec + sec_fraction),
options.fetch(:offset, offset),
options.fetch(:start, start)
)
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)
datetime_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?
datetime_advanced_by_date
else
datetime_advanced_by_date.since(seconds_to_advance)
end
end
# Returns a new DateTime representing the time a number of seconds ago.
# Do not use this method in combination with x.months, use months_ago instead!
def ago(seconds)
since(-seconds)
end
# Returns a new DateTime representing the time a number of seconds since the
# instance time. Do not use this method in combination with x.months, use
# months_since instead!
def since(seconds)
self + Rational(seconds.round, 86400)
end
alias :in :since
# Returns a new DateTime 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 DateTime 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 DateTime representing the end of the day (23:59:59).
def end_of_day
change(:hour => 23, :min => 59, :sec => 59)
end
alias :at_end_of_day :end_of_day
# Returns a new DateTime representing the start of the hour (hh:00:00).
def beginning_of_hour
change(:min => 0)
end
alias :at_beginning_of_hour :beginning_of_hour
# Returns a new DateTime representing the end of the hour (hh:59:59).
def end_of_hour
change(:min => 59, :sec => 59)
end
alias :at_end_of_hour :end_of_hour
# Returns a new DateTime representing the start of the minute (hh:mm:00).
def beginning_of_minute
change(:sec => 0)
end
alias :at_beginning_of_minute :beginning_of_minute
# Returns a new DateTime representing the end of the minute (hh:mm:59).
def end_of_minute
change(:sec => 59)
end
alias :at_end_of_minute :end_of_minute
# Returns a <tt>Time</tt> instance of the simultaneous time in the system timezone.
def localtime(utc_offset = nil)
utc = new_offset(0)
Time.utc(
utc.year, utc.month, utc.day,
utc.hour, utc.min, utc.sec + utc.sec_fraction
).getlocal(utc_offset)
end
alias_method :getlocal, :localtime
# Returns a <tt>DateTime</tt> instance of the simultaneous time in the UTC timezone.
#
# DateTime.civil(2005, 2, 21, 10, 11, 12, Rational(-6, 24)) # => Mon, 21 Feb 2005 10:11:12 -0600
# DateTime.civil(2005, 2, 21, 10, 11, 12, Rational(-6, 24)).utc # => Mon, 21 Feb 2005 16:11:12 UTC
def utc
new_offset(0)
end
alias_method :getgm, :utc
alias_method :getutc, :utc
alias_method :gmtime, :utc
# Returns +true+ if <tt>offset == 0</tt>.
def utc?
offset == 0
end
# Returns the offset value in seconds.
def utc_offset
(offset * 86400).to_i
end
# Layers additional behavior on DateTime#<=> so that Time and
# ActiveSupport::TimeWithZone instances can be compared with a DateTime.
def <=>(other)
if other.kind_of?(Infinity)
super
elsif other.respond_to? :to_datetime
super other.to_datetime rescue nil
else
nil
end
end
end
|