YamlHelper.hpp

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/*
 * YamlHelper.hpp
 *
 *  Created on: Nov 13, 2011
 *      Author: mriedel
 */

#ifndef YAMLHELPER_HPP_
#define YAMLHELPER_HPP_

#include <telekyb_defines/telekyb_defines.hpp>

#include <ros/console.h>

#include <yaml-cpp/yaml.h>
// Conversion
#include <telekyb_base/Tools/YamlConversion.hpp>

namespace TELEKYB_NAMESPACE
{


class YamlHelper {
public:
        // Parse Node to String
        static bool parseNodeToString(const YAML::Node& node, std::string& output);
        static bool parseStringToNode(const std::string& string, YAML::Node& node);

        // Parse Node to Value
        template < class _T >
        static bool parseNodeToValue(const YAML::Node& input, _T& value) {
                bool success = true;
                try {
                        value = input.as<_T>();
                        //input >> value;
                } catch (YAML::Exception &e) {
                        ROS_ERROR_STREAM("Error converting from YAML! " << e.what());
                        success = false;
                } catch (std::runtime_error &e) {
                        ROS_ERROR_STREAM("Error converting from YAML! " << e.what());
                        success = false;
                }

                return success;
        }

        // Template Helpers
        template < class _T >
        static bool parseStringToValue(const std::string& input, _T& value) {
                //ROS_INFO_STREAM("Parsing: " << input);
                YAML::Node node = YAML::Load(input);
                return parseNodeToValue(node, value);
        }

        template < class _T >
        static bool parseValueToString(const _T& value , std::string& output) {
                YAML::Node node( value );// = value;
                return parseNodeToString(node, output);
        }

        // direct accessor
        template < class _T >
        static std::string parseValueToString(const _T& value) {
                std::string str("yaml-conversion failed");
                parseValueToString(value, str);
                return str;
        }



};

}


#endif /* YAMLHELPER_HPP_ */