класс IPAddr

# File lib/ipaddr.rb, line 125
def &(other)
  return self.clone.set(@addr & coerce_other(other).to_i)
end

# File lib/ipaddr.rb, line 140
def <<(num)
  return self.clone.set(addr_mask(@addr << num))
end

# File lib/ipaddr.rb, line 382
def <=>(other)
  other = coerce_other(other)
rescue
  nil
else
  @addr <=> other.to_i if other.family == @family
end

# File lib/ipaddr.rb, line 150
def ==(other)
  other = coerce_other(other)
rescue
  false
else
  @family == other.family && @addr == other.to_i
end

# File lib/ipaddr.rb, line 135
def >>(num)
  return self.clone.set(@addr >> num)
end

# File lib/ipaddr.rb, line 392
def eql?(other)
  return self.class == other.class && self.hash == other.hash && self == other
end

# File lib/ipaddr.rb, line 397
def hash
  return ([@addr, @mask_addr, @zone_id].hash << 1) | (ipv4? ? 0 : 1)
end

# File lib/ipaddr.rb, line 228
def hton
  case @family
  when Socket::AF_INET
    return [@addr].pack('N')
  when Socket::AF_INET6
    return (0..7).map { |i|
      (@addr >> (112 - 16 * i)) & 0xffff
    }.pack('n8')
  else
    raise AddressFamilyError, "unsupported address family"
  end
end

# File lib/ipaddr.rb, line 176
def include?(other)
  other = coerce_other(other)
  return false unless other.family == family
  range = to_range
  other = other.to_range
  range.begin <= other.begin && range.end >= other.end
end

# File lib/ipaddr.rb, line 448
def inspect
  case @family
  when Socket::AF_INET
    af = "IPv4"
  when Socket::AF_INET6
    af = "IPv6"
    zone_id = @zone_id.to_s
  else
    raise AddressFamilyError, "unsupported address family"
  end
  return sprintf("#<%s: %s:%s%s/%s>", self.class.name,
                 af, _to_string(@addr), zone_id, _to_string(@mask_addr))
end

# File lib/ipaddr.rb, line 361
def ip6_arpa
  if !ipv6?
    raise InvalidAddressError, "not an IPv6 address: #{@addr}"
  end
  return _reverse + ".ip6.arpa"
end

# File lib/ipaddr.rb, line 369
def ip6_int
  if !ipv6?
    raise InvalidAddressError, "not an IPv6 address: #{@addr}"
  end
  return _reverse + ".ip6.int"
end

# File lib/ipaddr.rb, line 242
def ipv4?
  return @family == Socket::AF_INET
end

# File lib/ipaddr.rb, line 329
def ipv4_compat
  warn "IPAddr\##{__callee__} is obsolete", uplevel: 1 if $VERBOSE
  if !ipv4?
    raise InvalidAddressError, "not an IPv4 address: #{@addr}"
  end
  return self.clone.set(@addr, Socket::AF_INET6)
end

# File lib/ipaddr.rb, line 301
def ipv4_compat?
  warn "IPAddr\##{__callee__} is obsolete", uplevel: 1 if $VERBOSE
  _ipv4_compat?
end

# File lib/ipaddr.rb, line 318
def ipv4_mapped
  if !ipv4?
    raise InvalidAddressError, "not an IPv4 address: #{@addr}"
  end
  clone = self.clone.set(@addr | 0xffff00000000, Socket::AF_INET6)
  clone.instance_variable_set(:@mask_addr, @mask_addr | 0xffffffffffffffffffffffff00000000)
  clone
end

# File lib/ipaddr.rb, line 296
def ipv4_mapped?
  return ipv6? && (@addr >> 32) == 0xffff
end

# File lib/ipaddr.rb, line 247
def ipv6?
  return @family == Socket::AF_INET6
end

# File lib/ipaddr.rb, line 284
def link_local?
  case @family
  when Socket::AF_INET
    @addr & 0xffff0000 == 0xa9fe0000 # 169.254.0.0/16
  when Socket::AF_INET6
    @addr & 0xffc0_0000_0000_0000_0000_0000_0000_0000 == 0xfe80_0000_0000_0000_0000_0000_0000_0000
  else
    raise AddressFamilyError, "unsupported address family"
  end
end

# File lib/ipaddr.rb, line 252
def loopback?
  case @family
  when Socket::AF_INET
    @addr & 0xff000000 == 0x7f000000
  when Socket::AF_INET6
    @addr == 1
  else
    raise AddressFamilyError, "unsupported address family"
  end
end

# File lib/ipaddr.rb, line 160
def mask(prefixlen)
  return self.clone.mask!(prefixlen)
end

# File lib/ipaddr.rb, line 340
def native
  if !ipv4_mapped? && !_ipv4_compat?
    return self
  end
  return self.clone.set(@addr & IN4MASK, Socket::AF_INET)
end

# File lib/ipaddr.rb, line 463
def netmask
  _to_string(@mask_addr)
end

# File lib/ipaddr.rb, line 418
def prefix
  case @family
  when Socket::AF_INET
    n = IN4MASK ^ @mask_addr
    i = 32
  when Socket::AF_INET6
    n = IN6MASK ^ @mask_addr
    i = 128
  else
    raise AddressFamilyError, "unsupported address family"
  end
  while n.positive?
    n >>= 1
    i -= 1
  end
  i
end

# File lib/ipaddr.rb, line 437
def prefix=(prefix)
  case prefix
  when Integer
    mask!(prefix)
  else
    raise InvalidPrefixError, "prefix must be an integer: #{@addr}"
  end
end

# File lib/ipaddr.rb, line 267
def private?
  case @family
  when Socket::AF_INET
    @addr & 0xff000000 == 0x0a000000 ||    # 10.0.0.0/8
      @addr & 0xfff00000 == 0xac100000 ||  # 172.16.0.0/12
      @addr & 0xffff0000 == 0xc0a80000     # 192.168.0.0/16
  when Socket::AF_INET6
    @addr & 0xfe00_0000_0000_0000_0000_0000_0000_0000 == 0xfc00_0000_0000_0000_0000_0000_0000_0000
  else
    raise AddressFamilyError, "unsupported address family"
  end
end

# File lib/ipaddr.rb, line 349
def reverse
  case @family
  when Socket::AF_INET
    return _reverse + ".in-addr.arpa"
  when Socket::AF_INET6
    return ip6_arpa
  else
    raise AddressFamilyError, "unsupported address family"
  end
end

# File lib/ipaddr.rb, line 377
def succ
  return self.clone.set(@addr + 1, @family)
end

# File lib/ipaddr.rb, line 186
def to_i
  return @addr
end

# File lib/ipaddr.rb, line 402
def to_range
  begin_addr = (@addr & @mask_addr)

  case @family
  when Socket::AF_INET
    end_addr = (@addr | (IN4MASK ^ @mask_addr))
  when Socket::AF_INET6
    end_addr = (@addr | (IN6MASK ^ @mask_addr))
  else
    raise AddressFamilyError, "unsupported address family"
  end

  self.class.new(begin_addr, @family)..self.class.new(end_addr, @family)
end

# File lib/ipaddr.rb, line 191
def to_s
  str = to_string
  return str if ipv4?

  str.gsub!(/\b0{1,3}([\da-f]+)\b/i, '\1')
  loop do
    break if str.sub!(/\A0:0:0:0:0:0:0:0\z/, '::')
    break if str.sub!(/\b0:0:0:0:0:0:0\b/, ':')
    break if str.sub!(/\b0:0:0:0:0:0\b/, ':')
    break if str.sub!(/\b0:0:0:0:0\b/, ':')
    break if str.sub!(/\b0:0:0:0\b/, ':')
    break if str.sub!(/\b0:0:0\b/, ':')
    break if str.sub!(/\b0:0\b/, ':')
    break
  end
  str.sub!(/:{3,}/, '::')

  if /\A::(ffff:)?([\da-f]{1,4}):([\da-f]{1,4})\z/i =~ str
    str = sprintf('::%s%d.%d.%d.%d', $1, $2.hex / 256, $2.hex % 256, $3.hex / 256, $3.hex % 256)
  end

  str
end

# File lib/ipaddr.rb, line 217
def to_string
  str = _to_string(@addr)

  if @family == Socket::AF_INET6
    str << zone_id.to_s
  end

  return str
end

# File lib/ipaddr.rb, line 469
def zone_id
  if @family == Socket::AF_INET6
    @zone_id
  else
    raise InvalidAddressError, "not an IPv6 address"
  end
end

# File lib/ipaddr.rb, line 479
def zone_id=(zid)
  if @family == Socket::AF_INET6
    case zid
    when nil, /\A%(\w+)\z/
      @zone_id = zid
    else
      raise InvalidAddressError, "invalid zone identifier for address"
    end
  else
    raise InvalidAddressError, "not an IPv6 address"
  end
end

# File lib/ipaddr.rb, line 130
def |(other)
  return self.clone.set(@addr | coerce_other(other).to_i)
end

# File lib/ipaddr.rb, line 145
def ~
  return self.clone.set(addr_mask(~@addr))
end