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df_strset.m    81 lines (75 with data), 2.5 kB

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function [x, over] = df_strset(x, over, S, RHS, pad = ' ')
%# x = df_strset(x, over, S, RHS, pad = " ")
%# replaces the strings in cellstr x at indr by strings at y. Adapt
%# the width of x if required. Use x 'over' attribute to display a
%# message in case strings are overwritten.
%% Copyright (C) 2009-2010 Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
%%
%% 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 2, 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,
%% write to the Free Software Foundation, 59 Temple Place -
%% Suite 330, Boston, MA 02111-1307, USA.
%#
%# $Id: df_strset.m 1020 2010-07-30 15:21:23Z dupuis $
%#
%# adjust x size, if required
if isnull(RHS),
%# clearing
if isempty(S),
x = cell(0, 1); over = zeros(1, 0);
return
endif
dummy = S; dummy(1).subs(2:end) = [];
over = builtin('subsasgn', over, dummy, true);
else
if isempty(S), %# complete overwrite
if ischar(RHS), RHS = cellstr(RHS); endif
nrow = length(RHS);
if any(~over(nrow)),
warning('going to overwrite names');
endif
x(1:nrow) = RHS;
over(1:nrow) = false;
if nrow < length(x),
x(nrow+1:end) = {pad};
endif
return
else
dummy = S(1); dummy.subs(2:end) = []; % keep first dim only
if any(~(builtin('subsref', over, dummy)));
warning('going to overwrite names');
endif
over = builtin('subsasgn', over, dummy, false);
endif
endif
%# common part
if ischar(RHS) && length(S(1).subs) > 1,
%# partial accesses to a char array
dummy = char(x);
dummy = builtin('subsasgn', dummy, S, RHS);
if isempty(dummy),
x = cell(0, 1); over = zeros(1, 0);
return
endif
if size(dummy, 1) == length(x),
x = cellstr(dummy);
return
endif
%# partial clearing gone wrong ? retry
RHS = { RHS };
endif
x = builtin('subsasgn', x, S, RHS);
endfunction