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PostgreSQL driver for Elixir
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lib/postgrex/extensions/inet.ex
defmodule Postgrex.Extensions.INET do
@moduledoc false
import Postgrex.BinaryUtils, warn: false
use Postgrex.BinaryExtension, send: "cidr_send", send: "inet_send"
def encode(_) do
quote location: :keep do
%Postgrex.INET{address: {a, b, c, d}, netmask: nil} ->
<<8::int32, 2, 32, 0, 4, a, b, c, d>>
%Postgrex.INET{address: {a, b, c, d}, netmask: n} ->
<<8::int32, 2, n, 1, 4, a, b, c, d>>
%Postgrex.INET{address: {a, b, c, d, e, f, g, h}, netmask: nil} ->
<<20::int32, 3, 128, 0, 16, a::16, b::16, c::16, d::16, e::16, f::16, g::16, h::16>>
%Postgrex.INET{address: {a, b, c, d, e, f, g, h}, netmask: n} ->
<<20::int32, 3, n, 1, 16, a::16, b::16, c::16, d::16, e::16, f::16, g::16, h::16>>
other ->
raise DBConnection.EncodeError, Postgrex.Utils.encode_msg(other, Postgrex.INET)
end
end
def decode(_) do
quote location: :keep do
<<8::int32, 2, n, cidr?, 4, a, b, c, d>> ->
n = if(cidr? == 1 or n != 32, do: n, else: nil)
%Postgrex.INET{address: {a, b, c, d}, netmask: n}
<<20::int32, 3, n, cidr?, 16, a::16, b::16, c::16, d::16, e::16, f::16, g::16, h::16>> ->
n = if(cidr? == 1 or n != 128, do: n, else: nil)
%Postgrex.INET{address: {a, b, c, d, e, f, g, h}, netmask: n}
end
end
end