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## Copyright (C) 2009-2013 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 {Command} {} 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))
m = __which__ (varargin{:});
if (nargout == 0)
for i = 1:nargin
if (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
else
print_usage ();
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_"), "")
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