Mercurial > octave
view scripts/plot/util/gnuplot_binary.in.m @ 26376:00f796120a6d stable
maint: Update copyright dates in all source files.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 02 Jan 2019 16:32:43 -0500 |
parents | 1861e2ea0a4b |
children | 4d6d21839dfd |
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## Copyright (C) 2008-2019 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 ## <https://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {} {[@var{prog}, @var{args}] =} gnuplot_binary () ## @deftypefnx {} {[@var{old_prog}, @var{old_args}] =} gnuplot_binary (@var{new_prog}) ## @deftypefnx {} {[@var{old_prog}, @var{old_args}] =} gnuplot_binary (@var{new_prog}, @var{arg1}, @dots{}) ## Query or set the name of the program invoked by the plot command when the ## graphics toolkit is set to @qcode{"gnuplot"}. ## ## Additional arguments to pass to the external plotting program may also be ## given. The default value is @qcode{"gnuplot"} with no additional arguments. ## @xref{Installation}. ## @seealso{graphics_toolkit} ## @end deftypefn ## Author: jwe function [prog, args] = gnuplot_binary (new_prog, varargin) mlock (); persistent gp_binary = %OCTAVE_CONF_GNUPLOT%; persistent gp_args = {}; if (nargout > 0 || nargin == 0) prog = gp_binary; args = gp_args; endif if (nargin > 0) if (! ischar (new_prog) || isempty (new_prog)) error ("gnuplot_binary: NEW_PROG must be a non-empty string"); endif gp_binary = new_prog; gp_args = {}; endif if (nargin > 1) if (! iscellstr (varargin)) error ("gnuplot_binary: arguments must be character strings"); endif gp_args = varargin; endif endfunction %!test %! [orig_val, orig_args] = gnuplot_binary (); %! unwind_protect %! [old_val, old_args] = gnuplot_binary ("__foobar__", "-opt1"); %! assert (orig_val, old_val); %! assert (orig_args, old_args); %! assert (gnuplot_binary (), "__foobar__"); %! [~, new_args] = gnuplot_binary (); %! assert (new_args, {"-opt1"}); %! unwind_protect_cleanup %! gnuplot_binary (orig_val, orig_args{:}); %! end_unwind_protect %! assert (gnuplot_binary (), orig_val);