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annotate scripts/plot/util/gnuplot_binary.in @ 20830:b65888ec820e draft default tip gccjit

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dmalcom gcc jit import
author Stefan Mahr <dac922@gmx.de>
date Fri, 27 Feb 2015 16:59:36 +0100
parents 777f26aa8e3e
children
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1 ## Copyright (C) 2008-2015 John W. Eaton
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Loadable Function} {[@var{prog}, @var{args}] =} gnuplot_binary ()
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21 ## @deftypefnx {Loadable Function} {[@var{old_prog}, @var{old_args}] =} gnuplot_binary (@var{new_prog}, @var{arg1}, @dots{})
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22 ## Query or set the name of the program invoked by the plot command when the
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23 ## graphics toolkit is set to "gnuplot".
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24 ##
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25 ## Additional arguments to pass to the external plotting program may also be
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26 ## given. The default value is @qcode{"gnuplot"} with no additional arguments.
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27 ## @xref{Installation}.
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28 ## @seealso{graphics_toolkit}
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29 ## @end deftypefn
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30
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31 ## Author: jwe
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32
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33 function [prog, args] = gnuplot_binary (new_prog, varargin)
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34
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35 persistent gp_binary = %OCTAVE_CONF_GNUPLOT%;
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36 persistent gp_args = {};
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37
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38 if (nargout > 0 || nargin == 0)
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39 prog = gp_binary;
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40 args = gp_args;
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41 endif
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42
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43 if (nargin == 1)
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44 if (! ischar (new_prog) || isempty (new_prog))
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45 error ("gnuplot_binary: NEW_PROG must be a non-empty string");
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46 endif
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47 gp_binary = new_prog;
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48 endif
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49
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50 if (nargin > 1)
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51 if (! iscellstr (varargin))
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52 error ("gnuplot_binary: arguments must be character strings");
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53 endif
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54 gp_args = varargin;
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55 endif
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56
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57 endfunction
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58
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59
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60 %!test
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61 %! orig_val = gnuplot_binary ();
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62 %! old_val = gnuplot_binary ("X");
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63 %! assert (orig_val, old_val);
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64 %! assert (gnuplot_binary (), "X");
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65 %! gnuplot_binary (orig_val);
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66 %! assert (gnuplot_binary (), orig_val);