Returns array containing basic informations about tables for ASCII
        replacement (look: _replace_tables()).

def _parse_tables(self, soup):
        """Returns array containing basic informations about tables for ASCII
        replacement (look: _replace_tables()).
        """
        tables = []
        for t in soup.find_all('table'):
            t_dict = {'width': 0, 'table': t, 'trs': [], 'col_width': {}}
            trs = t.find_all('tr')
            if len(trs) > 0:
                for tr in trs:
                    tr_dict = []
                    tds = tr.find_all('th') + tr.find_all('td')
                    if len(tds) > 0:
                        for i, td in enumerate(tds):
                            td_text = self._find_any_text(td)
                            length = len(td_text)
                            if i in t_dict['col_width']:
                                t_dict['col_width'][i] = max(
                                    length,
                                    t_dict['col_width'][i]
                                )
                            else:
                                t_dict['col_width'][i] = length
                            tr_dict.append({
                                'text': td_text,
                                'colspan': int(td.get('colspan', 1)),
                            })
                        t_dict['trs'].append(tr_dict)
                for col in t_dict['col_width']:
                    t_dict['width'] += t_dict['col_width'][col]
                tables.append(t_dict)
        return tables