C++ source code to get yaml informations by yaml-cpp 0.3 series.

YamlCpp03.cpp

/*
 * Getting yaml informations by yaml-cpp 0.3 series.
 */
#include <fstream>
#include <string>
#include "yaml-cpp/yaml.h"

using namespace std;

struct Db {
    string hostname;
    string database;
    string username;
    string password;
};

void operator >> (const YAML::Node& node, Db& db) {
    node["hostname"] >> db.hostname;
    node["database"] >> db.database;
    node["username"] >> db.username;
    node["password"] >> db.password;
}

int main(int argc, char* argv[]){
    try{
        ifstream fin("config2.yml");
        YAML::Parser parser(fin);
        YAML::Node doc;
        parser.GetNextDocument(doc);
        Db db;
        doc[0] >> db;
        cout << "* DB Setting:\n"
             << "  - HOSTNAME: " << db.hostname << "\n"
             << "  - DATABASE: " << db.database << "\n"
             << "  - USERNAME: " << db.username << "\n"
             << "  - PASSWORD: " << db.password << endl;
    } catch(YAML::ParserException& e) {
        cerr << e.what() << endl;
    }

    return 0;
}