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birdie src birdie_ffi_erl.erl
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src/birdie_ffi_erl.erl 

-module(birdie_ffi_erl).

-export([terminal_width/0, clear/0, cursor_up/1, clear_line/0]).



terminal_width() ->

    case io:columns(user) of

        {ok, Width} -> {ok, Width};

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

    end.



clear() ->

    io:format("\ec"),

    io:format("\e[H\e[J").



cursor_up(X) ->

    io:format("\x1b[" ++ integer_to_list(X) ++ "A").



clear_line() ->

    io:format("\x1b[2K").