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## -*- texinfo -*-
## @deftypefn {} {@var{b64_str} =} matlab.net.base64encode (@var{in})
##
## Convert @var{in} to a base64 encoded string @var{b64_str}.
##
## The input @var{in} can be a string or numeric vector.
## The output @var{b64_str} will be encoded according to RFC 4648.
##
## @seealso{matlab.net.base64decode, base64_decode, base64_encode,
## unicode2native}
## @end deftypefn

function b64_str = base64encode (in)

  if (nargin != 1)
    print_usage ();
  endif

  if (! isvector (in) || ! (isnumeric (in) || ischar (in)))
    error ("base64encode: IN must be a numeric or character vector");
  endif

  if (any (in != round (in)))
    error ("base64encode: IN must consist of integers");
  endif

  b64_str = base64_encode (uint8 (in));

endfunction


## Test char vector input
%!assert (matlab.net.base64encode (1), "AQ==")
%!assert (matlab.net.base64encode (255), "/w==")
%!assert (matlab.net.base64encode (1:3), "AQID")
%!assert (matlab.net.base64encode ("a"), "YQ==")
%!assert (matlab.net.base64encode ("abcdefg"), "YWJjZGVmZw==")

## Test input validation
%!error <Invalid call> matlab.net.base64encode ()
%!error <numeric or character vector> matlab.net.base64encode ({1,2})
%!error <numeric or character vector> matlab.net.base64encode ([1,2;3,4])
%!error <consist of integers> matlab.net.base64encode (pi)