/**
* Detect and parse closing tag
*
* Pre-offset: any
* Post-offset: after closing tag or reverted
*
* @param StringReader $input input
* @param bool $getToken get token instead of true, null instead of false and do not revert 1/0
* @return array|bool token/true or null/false (= not detected)
*/
protected function parseClosingTag(StringReader $input, $getToken = false)
{
// are tags defined?
if (null === $this->tags) {
return $getToken ? null : false;
}
// check first character
if ($input->char !== $this->tags[$input->args['tag_id']][2][0]) {
return $getToken ? null : false;
}
// check other characters
$offset = 0;
$input->pushState();
while (!$input->end) {
if ($input->char === $this->tags[$input->args['tag_id']][2][$offset]) {
++$offset;
if ($offset === $this->tags[$input->args['tag_id']][3]) {
// tag detected
if ($getToken) {
$input->popState();
$token = $this->token(self::T_TAG, $input->line, $this->tags[$input->args['tag_id']][2]);
$input->eat();
return $token;
} else {
$input->revertState();
return true;
}
}
} else {
break;
}
$input->eat();
}
// no detection
$input->revertState();
return $getToken ? null : false;
}
