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1 ## Copyright (C) 1996, 1998, 1999, 2000, 2002, 2004, 2005, 2006, 2007, 2008 |
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2 ## Kurt Hornik |
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3 ## |
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4 ## This file is part of Octave. |
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5 ## |
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6 ## Octave is free software; you can redistribute it and/or modify it |
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7 ## under the terms of the GNU General Public License as published by |
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8 ## the Free Software Foundation; either version 3 of the License, or (at |
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9 ## your option) any later version. |
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10 ## |
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11 ## Octave is distributed in the hope that it will be useful, but |
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 ## General Public License for more details. |
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15 ## |
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16 ## You should have received a copy of the GNU General Public License |
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17 ## along with Octave; see the file COPYING. If not, see |
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18 ## <http://www.gnu.org/licenses/>. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} deblank (@var{s}) |
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22 ## Remove trailing blanks and nulls from @var{s}. If @var{s} |
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23 ## is a matrix, @var{deblank} trims each row to the length of longest |
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24 ## string. If @var{s} is a cell array, operate recursively on each |
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25 ## element of the cell array. |
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26 ## @end deftypefn |
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27 |
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28 ## Author: Kurt Hornik <Kurt.Hornik@wu-wien.ac.at> |
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29 ## Adapted-By: jwe |
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30 |
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31 function s = deblank (s) |
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32 |
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33 if (nargin != 1) |
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34 print_usage (); |
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35 endif |
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36 |
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37 char_arg = ischar (s); |
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38 |
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39 if (char_arg || isnumeric (s)) |
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40 |
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41 if (! isempty (s)) |
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42 if (char_arg) |
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43 k = find (! isspace (s) & s != "\0"); |
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44 else |
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45 warning ("deblank: expecting character string argument") |
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46 k = find (s != 0); |
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47 endif |
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48 |
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49 if (isempty (k)) |
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50 s = resize (s, 0, 0); |
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51 else |
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52 s = s(:,1:ceil (max (k) / rows (s))); |
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53 endif |
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54 endif |
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55 |
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56 elseif (iscell(s)) |
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57 |
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58 s = cellfun (@deblank, s, "UniformOutput", false); |
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59 |
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60 else |
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61 error ("deblank: expecting character string argument"); |
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62 endif |
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63 |
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64 endfunction |
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65 |
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66 %!assert (strcmp (deblank (" f o o "), " f o o")); |
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67 |
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68 %!assert (deblank ([]), []) |
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69 %!assert (deblank ({}), {}) |
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70 %!assert (deblank (""), "") |
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71 |
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72 %!assert (deblank ([0,0,0]), []) |
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73 %!assert (deblank (' '), '') |
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74 %!assert (deblank (" "), "") |
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75 |
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76 %!assert (typeinfo (deblank (" ")), "string") |
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77 %!assert (typeinfo (deblank (' ')), "sq_string") |
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78 |
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79 %!assert (deblank ([1,2,0]), [1,2]) |
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80 %!assert (deblank ([1,2,0,32]), [1,2,0,32]) |
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81 |
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82 %!assert (deblank (int8 ([1,2,0])), int8 ([1,2])) |
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83 |
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84 %!error deblank (); |
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85 |
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86 %!error deblank ("foo", "bar"); |
