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########################################################################
##
## Copyright (C) 2013-2022 The Octave Project Developers
##
## See the file COPYRIGHT.md in the top-level directory of this
## distribution or <https://octave.org/copyright/>.
##
## 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
## <https://www.gnu.org/licenses/>.
##
########################################################################
## -*- texinfo -*-
## @deftypefn {} {} __have_feature__ (feature)
## Undocumented internal function.
## @end deftypefn
function retval = __have_feature__ (feature)
if (strncmp (feature, "ENABLE_", 7))
features = __octave_config_info__ ();
else
features = __octave_config_info__ ("build_features");
endif
if (iscellstr (feature))
retval = (all (isfield (features, feature))
&& all (cellfun (@(x) features.(x), feature)));
elseif (ischar (feature))
retval = isfield (features, feature) && features.(feature);
else
retval = false;
endif
endfunction
%!assert (islogical (__have_feature__ ("MAGICK")))
%!assert (isscalar (__have_feature__ ("MAGICK")))
%!assert (__have_feature__ ("MAGICK"), __have_feature__ ({"MAGICK", "MAGICK"}))
## Test that an empty feature set returns true
%!assert (__have_feature__ ({}))
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