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1 ## Copyright (C) 2006, 2007 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 |
