private function standardize_html()
{
//-- STANDARDIZE THE HTML CODE
// * protect against client-side scripting and html denied tags :: the < ? ? > or < % % > tag(s) will be detected and if present, will be replaced with dummy tags to prevent code injection
// * remove all weird / unsafe characters (ex: non-utf8)
// * replace multiple spaces with just one space
//--
//--
if ($this->is_std != false) {
return;
// avoid to re-parse
}
//end if
//--
$this->is_std = true;
//--
//-- remove all non utf8 characters
$this->html = (string) preg_replace((string) Smart::lower_unsafe_characters(), '', (string) $this->html);
//-- standardize new lines, tabs and line ends
$this->html = (string) str_replace(array("", "\r\n", "\r", ' />', '/>'), array('', "\n", "\n", '>', '>'), (string) $this->html);
//-- protect against server-side tags
$this->html = (string) str_replace(array('<' . '?', '?' . '>', '<' . '%', '%' . '>'), array('<tag-question:start', 'tag-question:end>', '<tag-percent:start', 'tag-percent:end>'), (string) $this->html);
//--
//-- standardize spaces and new lines
$arr_spaces_cleanup = array('/([\\t ])+/si' => ' ', '/^([\\t ])+/mi' => '', '/([\\t ])+$/mi' => '', '/[\\r\\n]+([\\t ]?[\\r\\n]+)+/si' => "\n");
//--
$this->html = (string) preg_replace((array) array_keys((array) $arr_spaces_cleanup), (array) array_values((array) $arr_spaces_cleanup), (string) $this->html);
$this->html = (string) SmartUnicode::fix_charset($this->html);
//--
}
