Mercurial > octave-libgccjit
view scripts/strings/strtrim.m @ 12925:1c71c9bf0570
deblank.m: Speed up 15x on cellstr inputs. Restrict input to strings or cellstrings.
* deblank.m: Replace cellfun call with regexprep for 15X speedup. Validate
input is a string or cellstr. Correct and conolidate tests.
* strtrim.m: Change input validation message to say that input must be string
or cellstring.
author | Rik <octave@nomad.inbox5.com> |
---|---|
date | Fri, 05 Aug 2011 10:01:18 -0700 |
parents | 29cd5a828bb2 |
children | f89449967f0d |
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## Copyright (C) 1996-2011 Kurt Hornik ## ## 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 ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Function File} {} strtrim (@var{s}) ## Remove leading and trailing whitespace from @var{s}. If ## @var{s} is a matrix, @var{strtrim} trims each row to the length of ## longest string. If @var{s} is a cell array, operate recursively on ## each element of the cell array. For example: ## ## @example ## @group ## strtrim (" abc ") ## @result{} "abc" ## ## strtrim ([" abc "; " def "]) ## @result{} ["abc "; " def"] ## @end group ## @end example ## @end deftypefn ## Author: John Swensen <jpswensen@jhu.edu> ## This function was derived from deblank. function s = strtrim (s) if (nargin != 1) print_usage (); endif if (ischar (s)) k = find (! isspace (s)); if (isempty (s) || isempty (k)) s = ""; else s = s(:, ceil (min (k) / rows (s)):ceil (max (k) / rows (s))); endif elseif (iscell (s)) s = regexprep (s, "^[\\s\v]+|[\\s\v]+$", ''); else error ("strtrim: S argument must be a string or cellstring"); endif endfunction %!assert (strtrim (" abc "), "abc"); %!assert (strtrim (" "), ""); %!assert (strtrim ("abc"), "abc"); %!assert (strtrim ([" abc "; " def "]), ["abc "; " def"]); %!assert (strtrim ({" abc "; " def "}), {"abc"; "def"}); %!error <Invalid call to strtrim> strtrim (); %!error <Invalid call to strtrim> strtrim ("abc", "def"); %!error <argument must be a string> strtrim (1);