parse method

@override Future<void> parse()

Initiates the parsing of the UCD file

Implementation

@override
Future<void> parse() async {
  final parser = UcdParser.parseFile(filename, (row) {
    if (row.error.isNotEmpty) {
      throw UcdException(row.error);
    }

    var version = 0.0;
    if (row.comment.isNotEmpty) {
      final rx = RegExp(r'^\s*E(\d+\.\d+)');
      version = double.parse(rx.firstMatch(row.comment)?[1] ?? '0.0');
    }

    final item = EmojiDataItem(
      row.rangeStart,
      row.rangeEnd,
      row.getField(1),
      version,
    );
    codePoints.add(item);
    (_properties[item.property] ??= []).add(item);
  });

  await parser.parse();
  sort();
  for (final items in _properties.values) {
    items.sort((a, b) => a.start.compareTo(b.start));
  }
}