boost

boost

boost/property_tree

#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/xml_parser.hpp>
int load_xml(const std::string& filename) {
    boost::property_tree::ptree pt;
    boost::property_tree::read_xml(filename, pt);
    if (pt.find("version") != pt.not_found()) {
        printf("version[%s]\n", pt.get<std::string>("version").c_str()); //get函数提供默认值
    }
    std::string key = "sofa"; //key 支持多层节点路径，如sofa.runtime
    boost::property_tree::ptree::const_assoc_iterator iter = pt.find(key);
    if (iter != pt.not_found()) {
        const auto& subpt = pt.get_child(key); //key支持多层节点路径。如sofa.runtime
        if (subpt.find("<xmlattr>") != subpt.not_found()) {
            const auto& attr = subpt.get_child("<xmlattr>");
            std::string imp = attr.get<std::string>("imp");
            printf("attr[imp], value[%s]\n", imp.c_str());
        }
        for (auto iter = subpt.begin(); iter != subpt.end(); ++iter) {
            std::string key = iter->first;
            std::string value = iter->second.get_value<std::string>();//get_value提供默认值
            if (key != "<xmlattr>") {
                printf("key[%s], value[%s]\n", key.c_str(), value.c_str());
            }
        }
    }
    return 0;
}