# Ipaddr **URL:** \ **Category:** Development\ **Created:** [September 29, 2007, 5:29pm UTC](https://www.ruby-forum.com/t/ipaddr/115874 "2007-09-29T17:29:23Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/77aa72/32.png) [@Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/u/Kazuhiro_NISHIYAMA)\ **Post date:** [September 29, 2007, 5:29pm UTC](https://www.ruby-forum.com/t/ipaddr/115874/1 "2007-09-29T17:29:23Z")
e$B@\>;3OB9-$G$9!#e(B ipaddre$B$Ge(B IPAddr.new(“127.0.0.0/8”).include?(“127.0.0.1”) e$B$,e(Bfalsee$B$K$J$C$FG:$s$@$3$H$,$"$k$N$G!"J8;zNs$b\<+F0$GJQ49$7$Fe(B e$B$&$1$D$1$F$/$l$k$H4r$7$$$N$G$O$J$$$+$H;W$$$^$9!#e(B # e$B:#$Oe(B # IPAddr.new(“127.0.0.0/8”).include?(IPAddr.new(“127.0.0.1”)) # e$B$8$c$J$$$H$@$a!#e(B # e$B%i%$%V%i%j$N%a%s%F%J$NOC$G;W$$$@$7$?!#e(B ---
**Author:** ![Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/77aa72/32.png) [@Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/u/Kazuhiro_NISHIYAMA)\ **Post date:** [October 2, 2007, 1:17pm UTC](https://www.ruby-forum.com/t/ipaddr/115874/2 "2007-10-02T13:17:55Z")
At Sun, 30 Sep 2007 00:27:59 +0900, Kazuhiro NISHIYAMA wrote: > 西山和広です。 > > ipaddrで > IPAddr.new(“127.0.0.0/8”).include?(“127.0.0.1”) > がfalseになって悩んだことがあるので、文字列も自動で変換して > うけつけてくれると嬉しいのではないかと思います。 > > # 今は > > # IPAddr.new(“127.0.0.0/8”).include?(IPAddr.new(“127.0.0.1”)) > > # じゃないとだめ。 　こうするといいかな。 # Index: ipaddr.rb — ipaddr.rb (revision 13588) +++ ipaddr.rb (working copy) @@ -105,14 +105,26 @@ return s end - def coerce(other) - case other - when IPAddr - ``` other ``` - when String - ``` self.class.new(other) ``` - else - ``` self.class.new(other, @family) ``` - end - end - private coerce - # Returns a new ipaddr built by bitwise AND. def &(other) - return self.clone.set(@addr & other.to\_i) - return self.clone.set(@addr & coerce(other).to\_i) end # Returns a new ipaddr built by bitwise OR. def |(other) - return self.clone.set(@addr | other.to\_i) - return self.clone.set(@addr | coerce(other).to\_i) end # Returns a new ipaddr built by bitwise right-shift. @@ -132,10 +144,7 @@ # Returns true if two ipaddr are equal. def ==(other) - if other.kind\_of?(IPAddr) && @family != other.family - ``` return false ``` - end - return (@addr == other.to\_i) - return @family == other.family && @addr == coerce(other).to\_i end # Returns a new ipaddr built by masking IP address with the given @@ -153,6 +162,7 @@ # p net1.include?(IPAddr.new(“192.168.2.255”)) #=\> true # p net1.include?(IPAddr.new(“192.168.3.0”)) #=\> false def include?(other) - other = coerce(other) if ipv4\_mapped? if (@mask\_addr \>\> 32) != 0xffffffffffffffffffffffff return false @@ -165,17 +175,12 @@ addr = @addr family = @family end - if other.kind\_of?(IPAddr) - ``` if other.ipv4_mapped? ``` - other\_addr = (other.to\_i & IN4MASK) - other\_family = Socket::AF\_INET - ``` else ``` - other\_addr = other.to\_i - other\_family = other.family - ``` end ``` - else # Not IPAddr - assume integer in same family as us - ``` other_addr = other.to_i ``` - ``` other_family = family ``` - if other.ipv4\_mapped? - ``` other_addr = (other.to_i & IN4MASK) ``` - ``` other_family = Socket::AF_INET ``` - else - ``` other_addr = other.to_i ``` - ``` other_family = other.family ``` end if family != other\_family 　ついでに \<=\> と succ を定義して Comparable にすると、 Range ã‚’ 作ったりできますね。 > # ライブラリのメンテナの話で思いだした。 　梅本さんにCCしておきます。 – / /\_\_ \_\_ [Akinori.org](http://Akinori.org) / [MUSHA.org](http://MUSHA.org) / ) ) ) ) / [FreeBSD.org](http://FreeBSD.org) / [Ruby-lang.org](http://Ruby-lang.org) Akinori MUSHA aka / (\_ / ( (\_\_( @ [iDaemons.org](http://iDaemons.org) / and.or.jp “Different eyes see different things, Different hearts beat on different strings – But there are times for you and me when all such things agree”