PhpCss\Scanner\Status\Text\Single::getToken PHP Method

    public function getToken($buffer, $offset)
    {
        if ("'" === substr($buffer, $offset, 1)) {
            return new Scanner\Token(Scanner\Token::SINGLEQUOTE_STRING_END, "'", $offset);
        } else {
            $tokenString = substr($buffer, $offset, 2);
            if ("\\'" == $tokenString || '\\\\' == $tokenString) {
                return new Scanner\Token(Scanner\Token::STRING_ESCAPED_CHARACTER, $tokenString, $offset);
            } else {
                $tokenString = $this->matchPattern($buffer, $offset, '([^\\\\\']+)S');
                if (!empty($tokenString)) {
                    return new Scanner\Token(Scanner\Token::STRING_CHARACTERS, $tokenString, $offset);
                }
            }
        }
        return NULL;
    }