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Programming language: Elixir
License: Apache License 2.0
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README
InetCidr
Classless Inter-Domain Routing (CIDR) library for Elixir
This library has the following features:
- Compatible with Erlang's :inet module
- Supports IPv4 and IPv6
Install
defp deps do
[
{:inet_cidr, "~> 1.0.0"}
]
end
Usage
Parsing a CIDR string
iex(1)> InetCidr.parse("192.168.0.0/16")
{{192,168,0,0}, {192,168,255,255}, 16}
iex(2)> InetCidr.parse("2001:abcd::/32")
{{8193, 43981, 0, 0, 0, 0, 0, 0}, {8193, 43981, 65535, 65535, 65535, 65535, 65535, 65535}, 32}
Printing a CIDR block to string
iex(1)> "192.168.0.0/16" |> InetCidr.parse |> InetCidr.to_string
"192.168.0.0/16"
iex(2)> "2001:abcd::/32" |> InetCidr.parse |> InetCidr.to_string
"2001:ABCD::/32"
Check whether a CIDR block contains an IP address
iex(1)> cidr = InetCidr.parse("192.168.0.0/16")
{{192,168,0,0}, {192,168,255,255}, 16}
iex(2)> address1 = InetCidr.parse_address!("192.168.15.20")
{192,168,15,20}
iex(3)> InetCidr.contains?(cidr, address1)
true
iex(4)> address2 = InetCidr.parse_address!("10.168.15.20")
{10,168,15,20}
iex(5)> InetCidr.contains?(cidr, address2)
false
iex(1)> cidr = InetCidr.parse("2001:abcd::/32")
{{8193, 43981, 0, 0, 0, 0, 0, 0}, {8193, 43981, 65535, 65535, 65535, 65535, 65535, 65535}, 32}
iex(2)> address1 = InetCidr.parse_address!("2001:abcd::")
{8193, 43981, 0, 0, 0, 0, 0, 0}
iex(3)> InetCidr.contains?(cidr, address1)
true
iex(4)> address2 = InetCidr.parse_address!("abcd:2001::")
{43981, 8193, 0, 0, 0, 0, 0, 0}
iex(5)> InetCidr.contains?(cidr, address2)
false
License
[LICENSE](LICENSE)
*Note that all licence references and agreements mentioned in the inet_cidr README section above
are relevant to that project's source code only.