annotate scripts/strings/deblank.m @ 11589:b0084095098e

missing semicolons in script files
author John W. Eaton <jwe@octave.org>
date Thu, 20 Jan 2011 18:26:09 -0500
parents fd0a3ac60b0e
children 1c71c9bf0570
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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fd0a3ac60b0e update copyright notices
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1 ## Copyright (C) 1996-2011 Kurt Hornik
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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} {} deblank (@var{s})
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21 ## Remove trailing blanks and nulls from @var{s}. If @var{s}
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22 ## is a matrix, @var{deblank} trims each row to the length of longest
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23 ## string. If @var{s} is a cell array, operate recursively on each
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24 ## element of the cell array.
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25 ## @end deftypefn
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26
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27 ## Author: Kurt Hornik <Kurt.Hornik@wu-wien.ac.at>
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28 ## Adapted-By: jwe
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29
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30 function s = deblank (s)
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31
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32 if (nargin != 1)
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33 print_usage ();
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34 endif
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35
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36 char_arg = ischar (s);
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37
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38 if (char_arg || isnumeric (s))
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39
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40 if (! isempty (s))
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41 if (char_arg)
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42 k = find (! isspace (s) & s != "\0");
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43 else
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b0084095098e missing semicolons in script files
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44 warning ("deblank: expecting character string argument");
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45 k = find (s != 0);
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46 endif
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47
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48 if (isempty (k))
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49 s = resize (s, 0, 0);
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50 else
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51 s = s(:,1:ceil (max (k) / rows (s)));
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52 endif
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53 endif
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54
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55 elseif (iscell(s))
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56
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01ddaedd6ad5 Reverse changeset b1f4bdc276b6. Use all lower case for "uniformoutput" option.
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57 s = cellfun (@deblank, s, "uniformoutput", false);
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58
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59 else
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60 error ("deblank: expecting character string argument");
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61 endif
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62
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63 endfunction
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64
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65 %!assert (strcmp (deblank (" f o o "), " f o o"));
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66
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67 %!assert (deblank ([]), [])
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68 %!assert (deblank ({}), {})
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69 %!assert (deblank (""), "")
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70
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71 %!assert (deblank ([0,0,0]), [])
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72 %!assert (deblank (' '), '')
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73 %!assert (deblank (" "), "")
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74
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75 %!assert (typeinfo (deblank (" ")), "string")
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76 %!assert (typeinfo (deblank (' ')), "sq_string")
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77
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78 %!assert (deblank ([1,2,0]), [1,2])
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79 %!assert (deblank ([1,2,0,32]), [1,2,0,32])
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80
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81 %!assert (deblank (int8 ([1,2,0])), int8 ([1,2]))
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82
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83 %!error deblank ();
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84
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85 %!error deblank ("foo", "bar");