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########################################################################
##
## Copyright (C) 2009-2024 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 {} {@var{has_feature} =} __gnuplot_has_feature__ (@var{feature})
## Undocumented internal function.
## @end deftypefn
function res = __gnuplot_has_feature__ (feature)
persistent features = {"minimum_version",
"needs_color_with_postscript",
"dashtype",
"alphablend_linecolor",
"qt_terminal",
"wxt_figure_position",
"qt_figure_position",
"fontspec_5"};
persistent has_features;
if (isempty (has_features))
gnuplot_version = __gnuplot_version__ ();
versions = {"4.4", "4.6", "5.0", "4.6", "4.6", "5.0", "5.0", "5.0"};
operators = {">=" , ">=" , ">=" , ">=" , ">=" , ">=" , ">=" , ">=" };
have_features = false (size (features));
for n = 1 : numel (have_features)
has_features(n) = compare_versions (gnuplot_version, versions{n}, operators{n});
endfor
endif
n = find (strcmpi (feature, features));
if (isempty (n))
res = NaN;
else
res = has_features(n);
endif
endfunction
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