68 lines
1.6 KiB
Ruby
68 lines
1.6 KiB
Ruby
# frozen_string_literal: true
|
|
unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
|
|
require 'json'
|
|
end
|
|
require 'date'
|
|
|
|
class DateTime
|
|
|
|
# See #as_json.
|
|
def self.json_create(object)
|
|
args = object.values_at('y', 'm', 'd', 'H', 'M', 'S')
|
|
of_a, of_b = object['of'].split('/')
|
|
if of_b and of_b != '0'
|
|
args << Rational(of_a.to_i, of_b.to_i)
|
|
else
|
|
args << of_a
|
|
end
|
|
args << object['sg']
|
|
civil(*args)
|
|
end
|
|
|
|
alias start sg unless method_defined?(:start)
|
|
|
|
# Methods <tt>DateTime#as_json</tt> and +DateTime.json_create+ may be used
|
|
# to serialize and deserialize a \DateTime object;
|
|
# see Marshal[https://docs.ruby-lang.org/en/master/Marshal.html].
|
|
#
|
|
# \Method <tt>DateTime#as_json</tt> serializes +self+,
|
|
# returning a 2-element hash representing +self+:
|
|
#
|
|
# require 'json/add/datetime'
|
|
# x = DateTime.now.as_json
|
|
# # => {"json_class"=>"DateTime", "y"=>2023, "m"=>11, "d"=>21, "sg"=>2299161.0}
|
|
#
|
|
# \Method +JSON.create+ deserializes such a hash, returning a \DateTime object:
|
|
#
|
|
# DateTime.json_create(x) # BUG? Raises Date::Error "invalid date"
|
|
#
|
|
def as_json(*)
|
|
{
|
|
JSON.create_id => self.class.name,
|
|
'y' => year,
|
|
'm' => month,
|
|
'd' => day,
|
|
'H' => hour,
|
|
'M' => min,
|
|
'S' => sec,
|
|
'of' => offset.to_s,
|
|
'sg' => start,
|
|
}
|
|
end
|
|
|
|
# Returns a JSON string representing +self+:
|
|
#
|
|
# require 'json/add/datetime'
|
|
# puts DateTime.now.to_json
|
|
#
|
|
# Output:
|
|
#
|
|
# {"json_class":"DateTime","y":2023,"m":11,"d":21,"sg":2299161.0}
|
|
#
|
|
def to_json(*args)
|
|
as_json.to_json(*args)
|
|
end
|
|
end
|
|
|
|
|