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## Copyright (C) 2003-2013 John W. Eaton
##
## This file is part of Octave.
##
## Octave is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or (at
## your option) any later version.
##
## Octave is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING. If not, see
## <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {@var{filename} =} fullfile (@var{dir1}, @var{dir2}, @dots{}, @var{file})
## Return a complete filename constructed from the given components.
## @seealso{fileparts}
## @end deftypefn
function filename = fullfile (varargin)
if (nargin > 0)
## Discard all empty arguments
varargin(cellfun ("isempty", varargin)) = [];
nargs = numel (varargin);
if (nargs > 1)
filename = varargin{1};
if (strcmp (filename(end), filesep))
filename(end) = "";
endif
for i = 2:nargs
tmp = varargin{i};
if (i < nargs && strcmp (tmp(end), filesep))
tmp(end) = "";
elseif (i == nargs && strcmp (tmp, filesep))
tmp = "";
endif
filename = [filename filesep tmp];
endfor
elseif (nargs == 1)
filename = varargin{1};
else
filename = "";
endif
else
print_usage ();
endif
endfunction
%!shared fs, fsx, xfs, fsxfs, xfsy
%! fs = filesep ();
%! fsx = [fs "x"];
%! xfs = ["x" fs];
%! fsxfs = [fs "x" fs];
%! xfsy = ["x" fs "y"];
%!assert (fullfile (""), "")
%!assert (fullfile (fs), fs)
%!assert (fullfile ("", fs), fs)
%!assert (fullfile (fs, ""), fs)
%!assert (fullfile ("", fs), fs)
%!assert (fullfile ("x"), "x")
%!assert (fullfile ("", "x"), "x")
%!assert (fullfile ("x", ""), "x")
%!assert (fullfile ("", "x", ""), "x")
%!assert (fullfile ("x", "y"), xfsy)
%!assert (fullfile ("x", "", "y"), xfsy)
%!assert (fullfile ("x", "", "y", ""), xfsy)
%!assert (fullfile ("", "x", "", "y", ""), xfsy)
%!assert (fullfile (fs), fs)
%!assert (fullfile (fs, fs), fs)
%!assert (fullfile (fs, "x"), fsx)
%!assert (fullfile (fs, xfs), fsxfs)
%!assert (fullfile (fsx, fs), fsxfs)
%!assert (fullfile (fs, "x", fs), fsxfs)
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