a sgf file parser, can parse sgf string to a sgf tree object.
sgf格式围棋棋谱解析器
dependencies:
sgf_parser:
git: https://github.com/qhzhyt/dart-sgf-parser.git
import 'package:sgf_parser/parser.dart';
SGFParser parser = SGFParser();
SGFTree tree = parser.parse("(;CA[utf8])");
print(tree);