晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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DIR:/opt/alt/ruby30/share/ruby/logger/
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Current File : //opt/alt/ruby30/share/ruby/logger/period.rb
# frozen_string_literal: true

class Logger
  module Period
    module_function

    SiD = 24 * 60 * 60

    def next_rotate_time(now, shift_age)
      case shift_age
      when 'daily'
        t = Time.mktime(now.year, now.month, now.mday) + SiD
      when 'weekly'
        t = Time.mktime(now.year, now.month, now.mday) + SiD * (7 - now.wday)
      when 'monthly'
        t = Time.mktime(now.year, now.month, 1) + SiD * 32
        return Time.mktime(t.year, t.month, 1)
      when 'now', 'everytime'
        return now
      else
        raise ArgumentError, "invalid :shift_age #{shift_age.inspect}, should be daily, weekly, monthly, or everytime"
      end
      if t.hour.nonzero? or t.min.nonzero? or t.sec.nonzero?
        hour = t.hour
        t = Time.mktime(t.year, t.month, t.mday)
        t += SiD if hour > 12
      end
      t
    end

    def previous_period_end(now, shift_age)
      case shift_age
      when 'daily'
        t = Time.mktime(now.year, now.month, now.mday) - SiD / 2
      when 'weekly'
        t = Time.mktime(now.year, now.month, now.mday) - (SiD * now.wday + SiD / 2)
      when 'monthly'
        t = Time.mktime(now.year, now.month, 1) - SiD / 2
      when 'now', 'everytime'
        return now
      else
        raise ArgumentError, "invalid :shift_age #{shift_age.inspect}, should be daily, weekly, monthly, or everytime"
      end
      Time.mktime(t.year, t.month, t.mday, 23, 59, 59)
    end
  end
end