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annotate scripts/miscellaneous/ls_command.m @ 7016:93c65f2a5668

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[project @ 2007-10-12 06:40:56 by jwe]
author jwe
date Fri, 12 Oct 2007 06:41:26 +0000
parents 45e37d4f324e
children a1dbe9d80eee
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1 ## Copyright (C) 2006 John W. Eaton
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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{old_cmd} =} ls_command (@var{cmd})
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21 ## Set or return the shell command used by Octave's @code{ls} command.
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22 ## The value of @var{cmd} must be a character string.
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23 ## With no arguments, simply return the previous value.
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24 ## @seealso{ls}
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25 ## @end deftypefn
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26
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27 ## Author: jwe
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28
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29 function old_cmd = ls_command (cmd)
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30
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31 global __ls_command__;
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32
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33 if (isempty (__ls_command__))
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34 ## FIXME -- ispc and isunix both return true for Cygwin. Should they?
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35 if (ispc () && ! isunix () && isempty (file_in_path (EXEC_PATH, "ls")))
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36 __ls_command__ = "cmd /C dir /D";
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37 else
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38 __ls_command__ = "ls -C";
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39 endif
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40 endif
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41
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42 if (nargin == 0 || nargin == 1)
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43
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44 old_cmd = __ls_command__;
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45
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46 if (nargin == 1)
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47 if (ischar (cmd))
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48 __ls_command__ = cmd;
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49 else
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50 error ("ls_command: expecting argument to be a character string");
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51 endif
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52 endif
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53
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54 endif
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55
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56 endfunction