Mercurial > octave
view scripts/strings/deblank.m @ 27919:1891570abac8
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2020.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 06 Jan 2020 22:29:51 -0500 |
parents | b442ec6dda5c |
children | bd51beb6205e |
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## Copyright (C) 1996-2020 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this distribution ## or <https://octave.org/COPYRIGHT.html/>. ## ## ## 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 {} {} deblank (@var{s}) ## Remove trailing whitespace and nulls from @var{s}. ## ## If @var{s} is a matrix, @var{deblank} trims each row to the length of ## longest string. If @var{s} is a cell array of strings, operate ## recursively on each string element. ## ## Examples: ## ## @example ## @group ## deblank (" abc ") ## @result{} " abc" ## ## deblank ([" abc "; " def "]) ## @result{} [" abc " ; " def"] ## @end group ## @end example ## @seealso{strtrim} ## @end deftypefn ## Author: Kurt Hornik <Kurt.Hornik@wu-wien.ac.at> ## Adapted-By: jwe function s = deblank (s) if (nargin != 1) print_usage (); endif if (isempty (s)) ## Return empty objects unchanged (Matlab compatibility) elseif (ischar (s)) ## Find indices of non-whitespace characters. If s is a ## char matrix, the indices are in column major order. k = find (! isspace (s) & s != "\0"); if (isempty (k)) ## Even if s was a char matrix! (Matlab compatibility) s = ""; else s = s(:,1:ceil (max (k) / rows (s))); endif elseif (iscell (s)) char_idx = cellfun ("isclass", s, "char"); cell_idx = cellfun ("isclass", s, "cell"); empty_idx = cellfun ("isempty", s); if (! all (char_idx | cell_idx | empty_idx)) error ("deblank: S argument must be a string or cellstring"); endif ## Divide work load. Recursive cellfun deblank call is slow ## and avoided where possible. s(char_idx) = regexprep (s(char_idx), "[\\s\v\\0]+$", ''); s(cell_idx) = cellfun ("deblank", s(cell_idx), "UniformOutput", false); else error ("deblank: S argument must be a string or cellstring"); endif endfunction %!assert (deblank (" f o o \0"), " f o o") %!assert (deblank (" \t f o o \t \0"), " \t f o o") %!assert (deblank (char (" abc ", " def ")), [" abc " ; " def"]) %!assert (deblank ([" "; " "]), "") %!assert (deblank (' '), '') %!assert (deblank (" "), "") %!assert (deblank (""), "") %!assert (deblank ([]), []) %!assert (deblank ({}), {}) %!assert (deblank ({[]}), {[]}) %!assert (deblank ({[], []}), {[], []}) %!assert (deblank ({" abc ", {" def "}}), {" abc", {" def"}}) %!error <Invalid call to deblank> deblank () %!error <Invalid call to deblank> deblank ("foo", "bar") %!error <argument must be a string> deblank (1)