Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
branch: fewer_strings
Fetching contributors…

Cannot retrieve contributors at this time

104 lines (92 sloc) 3.745 kB
require 'date'
require 'active_support/inflector/methods'
require 'active_support/core_ext/time/conversions'
require 'active_support/core_ext/date_time/calculations'
require 'active_support/values/time_zone'
class DateTime
# Convert to a formatted string. See Time::DATE_FORMATS for predefined formats.
#
# This method is aliased to <tt>to_s</tt>.
#
# === Examples
# datetime = DateTime.civil(2007, 12, 4, 0, 0, 0, 0) # => Tue, 04 Dec 2007 00:00:00 +0000
#
# datetime.to_formatted_s(:db) # => "2007-12-04 00:00:00"
# datetime.to_s(:db) # => "2007-12-04 00:00:00"
# datetime.to_s(:number) # => "20071204000000"
# datetime.to_formatted_s(:short) # => "04 Dec 00:00"
# datetime.to_formatted_s(:long) # => "December 04, 2007 00:00"
# datetime.to_formatted_s(:long_ordinal) # => "December 4th, 2007 00:00"
# datetime.to_formatted_s(:rfc822) # => "Tue, 04 Dec 2007 00:00:00 +0000"
# datetime.to_formatted_s(:iso8601) # => "2007-12-04T00:00:00+00:00"
#
# == Adding your own datetime formats to to_formatted_s
# DateTime formats are shared with Time. You can add your own to the
# Time::DATE_FORMATS hash. Use the format name as the hash key and
# either a strftime string or Proc instance that takes a time or
# datetime argument as the value.
#
# # config/initializers/time_formats.rb
# Time::DATE_FORMATS[:month_and_year] = '%B %Y'
# Time::DATE_FORMATS[:short_ordinal] = lambda { |time| time.strftime("%B #{time.day.ordinalize}") }
def to_formatted_s(format = :default)
if formatter = ::Time::DATE_FORMATS[format]
formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
else
to_default_s
end
end
alias_method :to_default_s, :to_s if instance_methods(false).include?(:to_s)
alias_method :to_s, :to_formatted_s
#
# datetime = DateTime.civil(2000, 1, 1, 0, 0, 0, Rational(-6, 24))
# datetime.formatted_offset # => "-06:00"
# datetime.formatted_offset(false) # => "-0600"
def formatted_offset(colon = true, alternate_utc_string = nil)
utc? && alternate_utc_string || ActiveSupport::TimeZone.seconds_to_utc_offset(utc_offset, colon)
end
# Overrides the default inspect method with a human readable one, e.g., "Mon, 21 Feb 2005 14:30:00 +0000".
def readable_inspect
to_s(:rfc822)
end
alias_method :default_inspect, :inspect
alias_method :inspect, :readable_inspect
# Returns DateTime with local offset for given year if format is local else
# offset is zero.
#
# DateTime.civil_from_format :local, 2012
# # => Sun, 01 Jan 2012 00:00:00 +0300
# DateTime.civil_from_format :local, 2012, 12, 17
# # => Mon, 17 Dec 2012 00:00:00 +0000
def self.civil_from_format(utc_or_local, year, month=1, day=1, hour=0, min=0, sec=0)
if utc_or_local.to_sym == :local
offset = ::Time.local(year, month, day).utc_offset.to_r / 86400
else
offset = 0
end
civil(year, month, day, hour, min, sec, offset)
end
# Converts +self+ to a floating-point number of seconds since the Unix epoch.
def to_f
seconds_since_unix_epoch.to_f
end
# Converts +self+ to an integer number of seconds since the Unix epoch.
def to_i
seconds_since_unix_epoch.to_i
end
# Returns the fraction of a second as microseconds
def usec
(sec_fraction * 1_000_000).to_i
end
# Returns the fraction of a second as nanoseconds
def nsec
(sec_fraction * 1_000_000_000).to_i
end
private
def offset_in_seconds
(offset * 86400).to_i
end
def seconds_since_unix_epoch
(jd - 2440588) * 86400 - offset_in_seconds + seconds_since_midnight
end
end
Jump to Line
Something went wrong with that request. Please try again.