diff options
Diffstat (limited to 'lib/ipaddress/ipv4.rb')
| -rw-r--r-- | lib/ipaddress/ipv4.rb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/ipaddress/ipv4.rb b/lib/ipaddress/ipv4.rb index ade1851..70d1a51 100644 --- a/lib/ipaddress/ipv4.rb +++ b/lib/ipaddress/ipv4.rb @@ -90,6 +90,7 @@ module IPAddress; # 32 bits interger containing the address @u32 = (@octets[0]<< 24) + (@octets[1]<< 16) + (@octets[2]<< 8) + (@octets[3]) + @allocator = 0 end # def initialize # @@ -1080,6 +1081,36 @@ module IPAddress; end # + # Allocates a new ip from the current subnet. Optional skip parameter + # can be used to skip addresses. + # + # Will raise StopIteration exception when all addresses have been allocated + # + # Example: + # + # ip = IPAddress("10.0.0.0/24") + # ip.allocate + # #=> "10.0.0.1/24" + # ip.allocate + # #=> "10.0.0.2/24" + # ip.allocate(2) + # #=> "10.0.0.5/24" + # + # + # Uses an internal @allocator which tracks the state of allocated + # addresses. + # + def allocate(skip=0) + @allocator += 1 + skip + + next_ip = network_u32+@allocator + if next_ip > broadcast_u32+1 + raise StopIteration + end + self.class.parse_u32(network_u32+@allocator, @prefix) + end + + # # private methods # private |