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1 ## Copyright (C) 2008 Ben Abbott |
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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 {Function File} {@var{val} =} pathdef () |
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21 ## Return the default path for Octave. |
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22 ## The path information is extracted from one of three sources. |
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23 ## In order of preference, those are; |
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24 ## |
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25 ## @enumerate |
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26 ## @item @file{~/.octaverc} |
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27 ## @item @file{<octave-home>/.../<version>/m/startup/octaverc} |
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28 ## @item Octave's path prior to changes by any octaverc. |
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29 ## @end enumerate |
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30 ## @seealso{path, addpath, rmpath, genpath, savepath, pathsep} |
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31 ## @end deftypefn |
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32 |
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33 function val = pathdef () |
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34 |
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35 ## Locate the site octaverc file. |
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36 pathdir = octave_config_info ("localstartupfiledir"); |
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37 site_octaverc = fullfile (pathdir, "octaverc"); |
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38 |
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39 ## Locate the user ~\.octaverc file. |
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40 user_octaverc = fullfile ("~", ".octaverc"); |
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41 |
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42 ## Extract the specified paths from the site and user octaverc"s. |
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43 site_path = __extractpath__ (site_octaverc); |
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44 if (exist (user_octaverc, "file")) |
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45 user_path = __extractpath__ (user_octaverc); |
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46 else |
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47 user_path = ""; |
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48 endif |
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49 |
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50 ## A path definition in the user octaverc has precedence over the |
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51 ## site. |
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52 |
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53 if (! isempty (user_path)) |
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54 val = user_path; |
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55 elseif (! isempty (site_path)) |
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56 val = site_path; |
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57 else |
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58 val = __pathorig__ (); |
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59 endif |
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60 |
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61 endfunction |
