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detect cellstr args in strcat
author John W. Eaton <jwe@octave.org>
date Wed, 20 Feb 2008 14:56:22 -0500
parents 83a8781b529d
children 3422f39573b1
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1 ## Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003,
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2 ## 2005, 2006, 2007 John W. Eaton
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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} {} strcat (@var{s1}, @var{s2}, @dots{})
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22 ## Return a string containing all the arguments concatenated. For example,
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23 ##
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24 ## @example
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25 ## @group
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26 ## s = [ "ab"; "cde" ];
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27 ## strcat (s, s, s)
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28 ## @result{} "ab ab ab "
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29 ## "cdecdecde"
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30 ## @end group
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31 ## @end example
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32 ## @end deftypefn
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33
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34 ## Author: jwe
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35
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36 function st = strcat (varargin)
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37
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38 if (nargin > 0)
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39
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40 if (iscellstr (varargin))
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41 ## All arguments are character strings.
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42 unwind_protect
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43 tmp = warning ("query", "Octave:empty-list-elements");
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44 warning ("off", "Octave:empty-list-elements");
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45 st = [varargin{:}];
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46 unwind_protect_cleanup
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47 warning (tmp.state, "Octave:empty-list-elements");
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48 end_unwind_protect
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49 else
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50 for i = 1:nargin
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51 tmp = varargin{i};
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52 if (! (iscellstr (tmp) || ischar (tmp)))
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53 error ("strcat: all arguments must be strings or cell arrays of strings");
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54 endif
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55 endfor
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56 st = strcat_cell (varargin);
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57 endif
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58 else
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59 print_usage ();
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60 endif
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61
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62 endfunction
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63
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64 function st = strcat_cell (varargin)
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65 ## All args must be same size or scalars.
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66 ## See the xtest below for expected behavior.
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67 error ("strcat: concatenating cell arrays of strings not implemented");
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68 endfunction
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69
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70 ## test the dimensionality
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71 ## 1d
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72 %!assert(strcat("ab ", "ab "), "ab ab ")
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73 ## 2d
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74 %!assert(strcat(["ab ";"cde"], ["ab ";"cde"]), ["ab ab ";"cdecde"])
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75
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76 %!assert((strcmp (strcat ("foo", "bar"), "foobar")
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77 %! && strcmp (strcat (["a"; "bb"], ["foo"; "bar"]), ["a foo"; "bbbar"])));
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79 %!xtest
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80 %! assert(all (strcmp (strcat ("a", {"bc", "de"}, "f"), {"abcf", "adef"})))
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81
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82 %!error strcat ();
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83
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84 %!error strcat (1, 2);
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85