Mercurial > octave
view scripts/strings/untabify.m @ 30920:47cbc69e66cd
eliminate direct access to call stack from evaluator
The call stack is an internal implementation detail of the evaluator.
Direct access to it outside of the evlauator should not be needed.
* pt-eval.h (tree_evaluator::get_call_stack): Delete.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Fri, 08 Apr 2022 15:19:22 -0400 |
parents | 5d3faba0342e |
children | 597f3ee61a48 |
line wrap: on
line source
######################################################################## ## ## Copyright (C) 2010-2022 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 {} {@var{str} =} untabify (@var{t}) ## @deftypefnx {} {@var{str} =} untabify (@var{t}, @var{tw}) ## @deftypefnx {} {@var{str} =} untabify (@var{t}, @var{tw}, @var{deblank}) ## Replace TAB characters in @var{t} with spaces. ## ## The input, @var{t}, may be either a 2-D character array, or a cell array of ## character strings. The output is the same class as the input. ## ## The tab width is specified by @var{tw}, and defaults to eight. ## ## If the optional argument @var{deblank} is true, then the spaces will be ## removed from the end of the character data. ## ## The following example reads a file and writes an untabified version of the ## same file with trailing spaces stripped. ## ## @example ## @group ## fid = fopen ("tabbed_script.m"); ## text = char (fread (fid, "uchar")'); ## fclose (fid); ## fid = fopen ("untabified_script.m", "w"); ## text = untabify (strsplit (text, "\n"), 8, true); ## fprintf (fid, "%s\n", text@{:@}); ## fclose (fid); ## @end group ## @end example ## ## @seealso{strjust, strsplit, deblank} ## @end deftypefn function str = untabify (t, tw = 8, deblank_arg = false) if (nargin < 1) print_usage (); elseif (! (ischar (t) || iscellstr (t))) error ("untabify: T must be a string or cellstring"); endif if (ischar (t)) str = replace_tabs (t, tw); else str = cellfun (@replace_tabs, t, {tw}, "uniformoutput", false); endif if (deblank_arg) str = deblank (str); endif endfunction function s = replace_tabs (t, tw) if (ndims (t) != 2) error ("untabify: character strings to untabify must have 2 dimensions"); endif if (isempty (t)) s = t; else nr = rows (t); sc = cell (nr, 1); for j = 1:nr n = 1:numel (t(j,:)); m = find (t(j,:) == "\t"); t(j,m) = " "; for i = 1:numel (m) k = tw * ceil (n(m(i)) / tw); dn = k - n(m(i)); n(m(i):end) += dn; endfor sc{j} = blanks (n(end)); sc{j}(n) = t(j,:); endfor s = char (sc); endif endfunction %!test %! s = untabify ("\thello\t"); %! assert (s, [blanks(8) "hello" blanks(3)]); %!test %! s = untabify ("\thello\t", 2); %! assert (s, [blanks(2) "hello" blanks(1)]); %!test %! s = untabify ("\thello\t", 4, true); %! assert (s, [blanks(4) "hello"]); %!assert (isempty (untabify (""))) %!test %! s = char (randi ([97 97+25], 3, 3)); %! assert (untabify (s), char (untabify (cellstr (s)))); ## Test input validation %!error <Invalid call> untabify () %!error <must be a string> untabify (1)