otters

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-module(otters_lib).
-export([
         id/0,
         ip_to_i32/1,
         i32_to_ip/1,
         timestamp/0,
         to_bin/1
         ]).


ip_to_i32({A, B, C, D}) ->
    <<Ip:32>> = <<A, B, C, D>>,
    Ip.

i32_to_ip(<<A, B, C, D>>) ->
    {A, B, C, D}.

timestamp() ->
    {MeS, S, MuS} = os:timestamp(),
    (MeS*1000000+S)*1000000+MuS.

%% For some reason not all OSs allow for this :/
%%    erlang:system_time(microsecond).

id() ->
    <<Id:64>> = crypto:strong_rand_bytes(8),
    Id.

to_bin(Int) when is_integer(Int)->
    integer_to_binary(Int);
to_bin(Atom) when is_atom(Atom) ->
    atom_to_binary(Atom, 'utf8');
to_bin(List) when is_list(List) ->
    unicode:characters_to_binary(List);
to_bin(Binary) when is_binary(Binary) ->
    Binary;
to_bin(Fun) when is_function(Fun, 0) ->
    to_bin(Fun());
to_bin(Value) ->
    unicode:characters_to_binary(io_lib:format("~1024p", [Value])).