function ok = set_permissions(file, readable, writable, executable)
mode = '';
if ~ispc()
if readable == 1
mode = [mode ' +r'];
elseif readable == -1
mode = [mode ' -r'];
end
end
if writable == 1
mode = [mode ' +w'];
elseif writable == -1
mode = [mode ' -w'];
end
if executable == 1
mode = [mode ' +x'];
elseif executable == -1
mode = [mode ' -x'];
end
if isempty(mode) && stdlib.exists(file)
ok = true;
return
end
[s, msg, id] = fileattrib(char(file), mode);
ok = s == 1;
if ~ok
warning(id, 'Failed to set permissions %s for %s: %s', mode, file, msg)
end
end