Time ^(Class)

# File time.rb, line 233
    def httpdate(date)
      if /\A\s*
          (?:Mon|Tue|Wed|Thu|Fri|Sat|Sun),\x20
          (\d{2})\x20
          (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\x20
          (\d{4})\x20
          (\d{2}):(\d{2}):(\d{2})\x20
          GMT
          \s*\z/ix =~ date
        Time.rfc2822(date)
      elsif /\A\s*
             (?:Monday|Tuesday|Wednesday|Thursday|Friday|Saturday|Sunday),\x20
             (\d\d)-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(\d\d)\x20
             (\d\d):(\d\d):(\d\d)\x20
             GMT
             \s*\z/ix =~ date
        Time.parse(date)
      elsif /\A\s*
             (?:Mon|Tue|Wed|Thu|Fri|Sat|Sun)\x20
             (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\x20
             (\d\d|\x20\d)\x20
             (\d\d):(\d\d):(\d\d)\x20
             (\d{4})
             \s*\z/ix =~ date
        Time.utc($6.to_i, MonthValue[$1.upcase], $2.to_i,
                 $3.to_i, $4.to_i, $5.to_i)
      else
        raise ArgumentError.new("not RFC 2616 compliant date: #{date.inspect}")
      end
    end

# File time.rb, line 136
    def parse(date, now=Time.now)
      year, mon, day, hour, min, sec, zone, _ = ParseDate.parsedate(date)
      year = yield(year) if year && block_given?

      if now
        begin
          break if year; year = now.year
          break if mon; mon = now.mon
          break if day; day = now.day
          break if hour; hour = now.hour
          break if min; min = now.min
          break if sec; sec = now.sec
        end until true
      end

      year ||= 1970
      mon ||= 1
      day ||= 1
      hour ||= 0
      min ||= 0
      sec ||= 0

      off = nil
      off = zone_offset(zone, year) if zone

      if off
        t = Time.utc(year, mon, day, hour, min, sec) - off
        t.localtime if off != 0
        t
      else
        Time.local(year, mon, day, hour, min, sec)
      end
    end

# File time.rb, line 185
    def rfc2822(date)
      if /\A\s*
          (?:(?:Mon|Tue|Wed|Thu|Fri|Sat|Sun)\s*,\s*)?
          (\d{1,2})\s+
          (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s+
          (\d{2,})\s+
          (\d{2})\s*
          :\s*(\d{2})\s*
          (?::\s*(\d{2}))?\s+
          ([+-]\d{4}|
           UT|GMT|EST|EDT|CST|CDT|MST|MDT|PST|PDT|[A-IK-Z])/ix =~ date
        # Since RFC 2822 permit comments, the regexp has no right anchor.

        day = $1.to_i
        mon = MonthValue[$2.upcase]
        year = $3.to_i
        hour = $4.to_i
        min = $5.to_i
        sec = $6 ? $6.to_i : 0
        zone = $7

        # following year completion is compliant with RFC 2822.

        year = if year < 50
                 2000 + year
               elsif year < 1000
                 1900 + year
               else
                 year
               end

        t = Time.utc(year, mon, day, hour, min, sec)
        offset = zone_offset(zone)
        t = (t - offset).localtime if offset != 0 || zone == '+0000'
        t
      else
        raise ArgumentError.new("not RFC 2822 compliant date: #{date.inspect}")
      end
    end

# File time.rb, line 274
    def xmlschema(date)
      if /\A\s*
          (-?\d+)-(\d\d)-(\d\d)
          T
          (\d\d):(\d\d):(\d\d)
          (\.\d*)?
          (Z|[+-]\d\d:\d\d)?
          \s*\z/ix =~ date
        datetime = [$1.to_i, $2.to_i, $3.to_i, $4.to_i, $5.to_i, $6.to_i] 
        datetime << $7.to_f * 1000000 if $7
        if $8
          Time.utc(*datetime) - zone_offset($8)
        else
          Time.local(*datetime)
        end
      else
        raise ArgumentError.new("invalid date: #{date.inspect}")
      end
    end

# File time.rb, line 69
    def zone_offset(zone, year=Time.now.year)
      off = nil
      zone = zone.upcase
      if /\A([+-])(\d\d):?(\d\d)\z/ =~ zone
        off = ($1 == '-' ? -1 : 1) * ($2.to_i * 60 + $3.to_i) * 60
      elsif /\A[+-]\d\d\z/ =~ zone
        off = zone.to_i * 3600
      elsif ZoneOffset.include?(zone)
        off = ZoneOffset[zone] * 3600
      elsif ((t = Time.local(year, 1, 1)).zone.upcase == zone rescue false)
        off = t.utc_offset
      elsif ((t = Time.local(year, 7, 1)).zone.upcase == zone rescue false)
        off = t.utc_offset
      end
      off
    end

# File time.rb, line 336
  def httpdate
    t = dup.utc
    sprintf('%s, %02d %s %d %02d:%02d:%02d GMT',
      RFC2822_DAY_NAME[t.wday],
      t.day, RFC2822_MONTH_NAME[t.mon-1], t.year,
      t.hour, t.min, t.sec)
  end

# File time.rb, line 305
  def rfc2822
    sprintf('%s, %02d %s %d %02d:%02d:%02d ',
      RFC2822_DAY_NAME[wday],
      day, RFC2822_MONTH_NAME[mon-1], year,
      hour, min, sec) +
    if utc?
      '-0000'
    else
      off = utc_offset
      sign = off < 0 ? '-' : '+'
      sprintf('%s%02d%02d', sign, *(off.abs / 60).divmod(60))
    end
  end

# File time.rb, line 358
  def xmlschema(fraction_digits=0)
    sprintf('%d-%02d-%02dT%02d:%02d:%02d',
      year, mon, day, hour, min, sec) +
    if fraction_digits == 0
      ''
    elsif fraction_digits <= 6
      '.' + sprintf('%06d', usec)[0, fraction_digits]
    else
      '.' + sprintf('%06d', usec) + '0' * (fraction_digits - 6)
    end +
    if utc?
      'Z'
    else
      off = utc_offset
      sign = off < 0 ? '-' : '+'
      sprintf('%s%02d:%02d', sign, *(off.abs / 60).divmod(60))
    end
  end