Mercurial > octave
view scripts/help/which.m @ 23219:3ac9f9ecfae5 stable
maint: Update copyright dates.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 22 Feb 2017 12:39:29 -0500 |
parents | 18b863e3b1e2 |
children | 092078913d54 |
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## Copyright (C) 2009-2017 John W. Eaton ## ## This file is part of Octave. ## ## Octave is free software; you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 3 of the License, or (at ## your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ## General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {} {} which name @dots{} ## Display the type of each @var{name}. ## ## If @var{name} is defined from a function file, the full name of the file is ## also displayed. ## @seealso{help, lookfor} ## @end deftypefn function varargout = which (varargin) if (nargin == 0 || ! iscellstr (varargin)) print_usage (); endif m = __which__ (varargin{:}); ## Check whether each name is a variable, variables take precedence over ## functions in name resolution. for i = 1:nargin m(i).is_variable = evalin ("caller", ['exist ("' undo_string_escapes(m(i).name) '", "var")'], false); if (m(i).is_variable) m(i).file = "variable"; endif endfor if (nargout == 0) for i = 1:nargin if (m(i).is_variable) printf ("'%s' is a variable\n", m(i).name); elseif (isempty (m(i).file)) if (! isempty (m(i).type)) printf ("'%s' is a %s\n", m(i).name, m(i).type); endif else if (isempty (m(i).type)) printf ("'%s' is the file %s\n", m(i).name, m(i).file); else printf ("'%s' is a %s from the file %s\n", m(i).name, m(i).type, m(i).file); endif endif endfor else varargout = {m.file}; endif endfunction %!test %! str = which ("ls"); %! assert (str(end-17:end), strcat ("miscellaneous", filesep (), "ls.m")); %!test %! str = which ("amd"); %! assert (str(end-6:end), "amd.oct"); %!assert (which ("_NO_SUCH_NAME_"), "") %!test %! x = 3; %! str = which ("x"); %! assert (str, "variable"); %!test %! str = which ("amd"); %! assert (str(end-6:end), "amd.oct"); %! amd = 12; %! str = which ("amd"); %! assert (str, "variable"); %! clear amd; %! str = which ("amd"); %! assert (str(end-6:end), "amd.oct");