parseTable static method

Implementation

static List<List<String>> parseTable(String html) {
  final tableRegExp = HtmlParserRegex.table;
  final rowRegExp = HtmlParserRegex.row;
  final headerCellRegExp = HtmlParserRegex.headerCell;
  final dataCellRegExp = HtmlParserRegex.dataCell;

  final tableMatch = tableRegExp.firstMatch(html);
  if (tableMatch == null) return [];

  final tableContent = tableMatch.group(0)!;
  final rows = <List<String>>[];

  for (final rowMatch in rowRegExp.allMatches(tableContent)) {
    final row = rowMatch.group(0)!;
    final headers =
        headerCellRegExp
            .allMatches(row)
            .map(
              (cellMatch) =>
                  HtmlParserRegex.thContent.firstMatch(cellMatch.group(0)!)?.group(1)?.trim() ??
                  HtmlParserStrings.emptyString,
            )
            .toList();
    final data =
        dataCellRegExp
            .allMatches(row)
            .map(
              (cellMatch) =>
                  HtmlParserRegex.tdContent.firstMatch(cellMatch.group(0)!)?.group(1)?.trim() ??
                  HtmlParserStrings.emptyString,
            )
            .toList();
    rows.add(headers.isNotEmpty ? headers : data);
  }
  return rows;
}