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1 ## Copyright (C) 2006 Daniel Sebald |
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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 ## Undocumented internal function. |
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20 |
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21 ## Return the version of gnuplot we are using. Note that we do not |
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22 ## attempt to handle the case of the user switching to different |
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23 ## versions of gnuplot during the same session. |
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24 |
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25 function version = __gnuplot_version__ () |
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26 |
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27 persistent __version__ = ""; |
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28 |
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29 if (isempty (__version__)) |
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30 [status, output] = system (sprintf ("%s --version", gnuplot_binary ())); |
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31 pattern = "^[^\\s]*\\s*([0-9]+\\.[0-9]+)\\s*[^\\s]*\\s*([^\\s]*)"; |
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32 [d1, d2, d3, d4, matches] = regexp (output, pattern); |
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33 if (iscell (matches) && numel (matches) > 0 && iscellstr (matches{1})) |
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34 __version__ = matches{1}{1}; |
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35 endif |
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36 endif |
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37 |
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38 version = __version__; |
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39 |
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40 endfunction |
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41 |
