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birdie src birdie_ffi.erl
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src/birdie_ffi.erl 

-module(birdie_ffi).

-export([get_line/1]).



-spec get_line(io:prompt()) -> {ok, unicode:unicode_binary()} | {error, nil}.

get_line(Prompt) ->

    case io:get_line(Prompt) of

        eof -> {error, nil};

        {error, _} -> {error, nil};

        Data when is_binary(Data) -> {ok, Data};

        Data when is_list(Data) -> {ok, unicode:characters_to_binary(Data)}

    end.