Mercurial > octave
annotate scripts/help/which.m @ 21634:96518f623c91
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author | Mike Miller <mtmiller@octave.org> |
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date | Wed, 20 Apr 2016 11:06:03 -0700 |
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1 ## Copyright (C) 2009-2015 John W. Eaton |
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2 ## |
11104 | 3 ## This file is part of Octave. |
4 ## | |
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 ## |
11104 | 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 |
11104 | 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 {} {} which name @dots{} |
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21 ## Display the type of each @var{name}. |
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22 ## |
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23 ## If @var{name} is defined from a function file, the full name of the file is |
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24 ## also displayed. |
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25 ## @seealso{help, lookfor} |
11547 | 26 ## @end deftypefn |
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27 |
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28 function varargout = which (varargin) |
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29 |
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30 if (nargin == 0 || ! iscellstr (varargin)) |
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31 print_usage (); |
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32 endif |
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33 |
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34 m = __which__ (varargin{:}); |
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35 |
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36 ## Check whether each name is a variable, variables take precedence over |
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37 ## functions in name resolution. |
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38 for i = 1:nargin |
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39 m(i).is_variable = evalin ("caller", |
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40 ["exist (\"" m(i).name "\", \"var\")"], false); |
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41 if (m(i).is_variable) |
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42 m(i).file = "variable"; |
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43 endif |
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44 endfor |
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45 |
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46 if (nargout == 0) |
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47 for i = 1:nargin |
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48 if (m(i).is_variable) |
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49 printf ("'%s' is a variable\n", m(i).name); |
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50 elseif (isempty (m(i).file)) |
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51 if (! isempty (m(i).type)) |
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52 printf ("'%s' is a %s\n", |
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53 m(i).name, m(i).type); |
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54 endif |
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55 else |
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56 if (isempty (m(i).type)) |
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57 printf ("'%s' is the file %s\n", |
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58 m(i).name, m(i).file); |
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59 else |
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60 printf ("'%s' is a %s from the file %s\n", |
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61 m(i).name, m(i).type, m(i).file); |
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62 endif |
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63 endif |
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64 endfor |
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65 else |
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66 varargout = {m.file}; |
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67 endif |
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68 |
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69 endfunction |
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70 |
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71 |
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72 %!test |
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73 %! str = which ("ls"); |
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74 %! assert (str(end-17:end), strcat ("miscellaneous", filesep (), "ls.m")); |
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75 %!test |
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76 %! str = which ("amd"); |
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77 %! assert (str(end-6:end), "amd.oct"); |
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78 |
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79 %!assert (which ("_NO_SUCH_NAME_"), "") |
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80 |
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81 %!test |
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82 %! x = 3; |
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83 %! str = which ("x"); |
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84 %! assert (str, "variable"); |
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85 |
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86 %!test |
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87 %! str = which ("amd"); |
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88 %! assert (str(end-6:end), "amd.oct"); |
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89 %! amd = 12; |
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90 %! str = which ("amd"); |
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91 %! assert (str, "variable"); |
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92 %! clear amd; |
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93 %! str = which ("amd"); |
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94 %! assert (str(end-6:end), "amd.oct"); |