/usr/share/octave/packages/struct-1.0.11/getfields.m is in octave-struct 1.0.11-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | ## Copyright (C) 2000 Etienne Grossmann <etienne@egdn.net>
## Copyright (C) 2012 Olaf Till <i7tiol@t-online.de>
##
## This program 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.
##
## This program 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
## this program; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Built-in Function} {[@var{v1}, @dots{}] =} getfields (@var{s}, 'k1', @dots{})
##
## It is equivalent to [@var{s}.k1, @dots{}]
## Return selected values from a scalar struct. Provides some
## compatibility and some flexibility.
## @seealso{setfields,rmfield,isfield,isstruct,struct}
## @end deftypefn
function [varargout] = getfields (s, varargin)
if (! all (isfield (s, varargin)))
error ("getfields: some fields not present");
endif
if (all (size (s) <= 1))
varargout = fields2cell (s, varargin);
else
error ("getfields: structure must be scalar or empty");
endif
endfunction
%!assert (getfields (struct ("key", "value"), "key"), "value");
%!shared s, x, y, z, oo
%! s = struct ("hello", 1, "world", 2);
%!assert (getfields (s, "hello"), s.hello);
%!assert (getfields (s, "world"), s.world);
%!
%! x = 2;
%! y = 3;
%! z = "foo";
%! s = tars (x, y, z);
%!assert (nthargout (1:3, @getfields, s, "x" , "y" ,"z"), {x y z});
%!assert (nthargout (1:3, @getfields, s, "x" , "z" ,"z"), {x z z});
%!
%!fail ('getfields (s, "foo")')
%!xtest
%! oo.f0 = 1;
%! oo = setfield (oo, {1, 2}, "fd", {3}, "b", 6);
%! assert (getfields (oo, {1, 2}, "fd", {3}, "b"), 6);
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