C++ 筆記 yaml-cpp 的使用

yaml-cpp 是一個開源庫，地址爲 https://github.com/jbeder/yaml-cpp

具體安裝配置可參考以下博文：

https://www.cnblogs.com/huodaozhe/p/12026327.html

https://blog.csdn.net/briblue/article/details/89515470

Yaml的語法可參考教程：http://www.ruanyifeng.com/blog/2016/07/yaml.html

這裏附上yaml-cpp的測試代碼：

void print_yaml(const YAML::Node& node, int level) {
    if(node.IsScalar()) {
        SYLAR_LOG_INFO(SYLAR_LOG_ROOT()) << std::string(level * 4, ' ')
            << node.Scalar() << " - " << node.Type() << " - " << level;
    } else if(node.IsNull()) {
        SYLAR_LOG_INFO(SYLAR_LOG_ROOT()) << std::string(level * 4, ' ')
            << "NULL - " << node.Type() << " - " << level;
    } else if(node.IsMap()) {
        for(auto it = node.begin();
                it != node.end(); ++it) {
            SYLAR_LOG_INFO(SYLAR_LOG_ROOT()) << std::string(level * 4, ' ')
                    << it->first << " - " << it->second.Type() << " - " << level;
            print_yaml(it->second, level + 1);
        }
    } else if(node.IsSequence()) {
        for(size_t i = 0; i < node.size(); ++i) {
            SYLAR_LOG_INFO(SYLAR_LOG_ROOT()) << std::string(level * 4, ' ')
                << i << " - " << node[i].Type() << " - " << level;
            print_yaml(node[i], level + 1);
        }
    }
}

void test_yaml() {
    YAML::Node root = YAML::LoadFile("/log.yml");
    print_yaml(root, 0);
}