Mercurial > octave
view scripts/strings/strcat.m @ 30564:796f54d4ddbf stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
In all .txi and .texi files except gpl.txi and gpl.texi in the
doc/liboctave and doc/interpreter directories, change the copyright
to "Octave Project Developers", the same as used for other source
files. Update copyright notices for 2022 (not done since 2019). For
gpl.txi and gpl.texi, change the copyright notice to be "Free Software
Foundation, Inc." and leave the date at 2007 only because this file
only contains the text of the GPL, not anything created by the Octave
Project Developers.
Add Paul Thomas to contributors.in.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 28 Dec 2021 18:22:40 -0500 |
parents | 0a5b15007766 |
children | 5d3faba0342e |
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######################################################################## ## ## Copyright (C) 1994-2022 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## This file is part of Octave. ## ## Octave is free software: you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation, either version 3 of the License, or ## (at your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {} strcat (@var{s1}, @var{s2}, @dots{}) ## Return a string containing all the arguments concatenated ## horizontally. ## ## If the arguments are cell strings, @code{strcat} returns a cell string ## with the individual cells concatenated. For numerical input, each element ## is converted to the corresponding ASCII character. Trailing white space ## for any character string input is eliminated before the strings are ## concatenated. Note that cell string values do @strong{not} have ## whitespace trimmed. ## ## For example: ## ## @example ## @group ## strcat ("|", " leading space is preserved", "|") ## @result{} | leading space is preserved| ## @end group ## @end example ## ## @example ## @group ## strcat ("|", "trailing space is eliminated ", "|") ## @result{} |trailing space is eliminated| ## @end group ## @end example ## ## @example ## @group ## strcat ("homogeneous space |", " ", "| is also eliminated") ## @result{} homogeneous space || is also eliminated ## @end group ## @end example ## ## @example ## @group ## s = [ "ab"; "cde" ]; ## strcat (s, s, s) ## @result{} ## "ababab " ## "cdecdecde" ## @end group ## @end example ## ## @example ## @group ## s = @{ "ab"; "cd " @}; ## strcat (s, s, s) ## @result{} ## @{ ## [1,1] = ababab ## [2,1] = cd cd cd ## @} ## @end group ## @end example ## ## @seealso{cstrcat, char, strvcat} ## @end deftypefn function st = strcat (varargin) if (nargin == 0) st = ""; elseif (nargin == 1) if (iscellstr (varargin{1})) st = varargin{1}; elseif (isreal (varargin{1}) || ischar (varargin{1})) st = char (cellstr (varargin{1})); else error ("strcat: inputs must be strings or cells of strings"); endif else ## Convert to cells of strings uo = "uniformoutput"; reals = cellfun ("isreal", varargin); if (any (reals)) varargin(reals) = cellfun ("char", varargin(reals), uo, false); endif chars = cellfun ("isclass", varargin, "char"); allchar = all (chars); varargin(chars) = cellfun ("cellstr", varargin(chars), uo, false); if (! all (cellfun ("isclass", varargin, "cell"))) error ("strcat: inputs must be strings or cells of strings"); endif ## We don't actually need to bring all cells to common size, because ## cellfun can now expand scalar cells. err = common_size (varargin{:}); if (err) error ("strcat: arguments must be the same size, or be scalars"); endif ## Cellfun handles everything for us. st = cellfun ("horzcat", varargin{:}, uo, false); if (allchar) ## If all inputs were strings, return strings. st = char (st); endif endif endfunction ## test the dimensionality ## 1d %!assert (strcat ("ab ", "ab "), "abab") %!assert (strcat ({"ab "}, "ab "), {"ab ab"}) %!assert (strcat ("ab ", {"ab "}), {"abab "}) %!assert (strcat ({"ab "}, {"ab "}), {"ab ab "}) %!assert (strcat ("", "ab"), "ab") %!assert (strcat ("", {"ab"}, {""}), {"ab"}) ## 2d %!assert (strcat (["ab ";"cde"], ["ab ";"cde"]), ["abab ";"cdecde"]) ## test for deblanking implied trailing spaces of character input %!assert (strcat ("foo", "bar"), "foobar") %!assert (strcat (["a "; "bb"], ["foo"; "bar"]), ["afoo "; "bbbar"]) ## test for mixing character and cell inputs %!assert (strcat ("a", {"bc", "de"}, "f"), {"abcf", "adef"}) ## test for scalar strings with vector strings %!assert (strcat (["a"; "b"], "c"), ["ac"; "bc"]) ## test with cells with strings of differing lengths %!assert (all (strcmp (strcat ({"a", "bb"}, "ccc"), {"accc", "bbccc"}))) %!assert (all (strcmp (strcat ("a", {"bb", "ccc"}), {"abb", "accc"}))) ## test with a single string or cell input %!assert <*49094> (strcat ("foo "), "foo") %!assert <*49094> (strcat ({"foo"}), {"foo"}) %!assert (strcat (1), char (1)) %!assert (strcat (1, 2), strcat (char (1), char (2))) %!assert (strcat ("", 2), strcat ([], char (2))) %!assert (strcat (), "")