Mercurial > hg > octave-nkf
annotate scripts/help/which.m @ 18519:2bd78ab75b23
which: Properly identify workspace variables (bug #37320)
* which.m: Check whether each name is a variable, for compatibility with
Matlab and consistency with exist(). Add %!tests for new behavior.
author | Mike Miller <mtmiller@ieee.org> |
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date | Sat, 08 Feb 2014 14:39:33 -0500 |
parents | d63878346099 |
children | 4197fc428c7d |
rev | line source |
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1 ## Copyright (C) 2009-2013 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 -*- |
11547 | 20 ## @deftypefn {Command} {} which name @dots{} |
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21 ## Display the type of each @var{name}. If @var{name} is defined from a |
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22 ## function file, the full name of the file is also displayed. |
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23 ## @seealso{help, lookfor} |
11547 | 24 ## @end deftypefn |
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25 |
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26 function varargout = which (varargin) |
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27 |
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28 if (nargin > 0 && iscellstr (varargin)) |
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29 m = __which__ (varargin{:}); |
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30 |
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31 ## Check whether each name is a variable, variables take precedence over |
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32 ## functions in name resolution. |
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33 for i = 1:nargin |
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34 m(i).is_variable = evalin ("caller", |
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35 ["exist (\"" m(i).name "\", \"var\")"], false); |
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36 if (m(i).is_variable) |
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37 m(i).file = "variable"; |
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38 endif |
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39 endfor |
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40 |
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41 if (nargout == 0) |
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42 for i = 1:nargin |
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43 if (m(i).is_variable) |
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44 printf ("'%s' is a variable\n", m(i).name); |
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45 elseif (isempty (m(i).file)) |
10549 | 46 if (! isempty (m(i).type)) |
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47 printf ("'%s' is a %s\n", |
10549 | 48 m(i).name, m(i).type); |
49 endif | |
50 else | |
51 if (isempty (m(i).type)) | |
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52 printf ("'%s' is the file %s\n", |
10549 | 53 m(i).name, m(i).file); |
54 else | |
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55 printf ("'%s' is a %s from the file %s\n", |
10549 | 56 m(i).name, m(i).type, m(i).file); |
57 endif | |
58 endif | |
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59 endfor |
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60 else |
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61 varargout = {m.file}; |
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62 endif |
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63 else |
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64 print_usage (); |
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65 endif |
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66 |
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67 endfunction |
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68 |
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69 |
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70 %!test |
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71 %! str = which ("ls"); |
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72 %! assert (str(end-17:end), strcat ("miscellaneous", filesep (), "ls.m")); |
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73 %!test |
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74 %! str = which ("amd"); |
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75 %! assert (str(end-6:end), "amd.oct"); |
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76 |
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77 %!assert (which ("_NO_SUCH_NAME_"), "") |
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78 |
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79 %!test |
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80 %! x = 3; |
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81 %! str = which ("x"); |
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82 %! assert (str, "variable"); |
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83 |
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84 %!test |
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85 %! str = which ("amd"); |
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86 %! assert (str(end-6:end), "amd.oct"); |
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87 %! amd = 12; |
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88 %! str = which ("amd"); |
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89 %! assert (str, "variable"); |
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90 %! clear amd; |
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91 %! str = which ("amd"); |
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92 %! assert (str(end-6:end), "amd.oct"); |