TokenFactory.cpp

Go to the documentation of this file.

#include "robot_instance/TokenFactory.h"

using namespace std;
using namespace log4cpp;

TokenMap::value_type TokenFactory::fromXml(const std::string& xml, const std::string& namePrefix)
{
    TiXmlDocument file;
    file.Parse(xml.c_str());
    TiXmlHandle doc(&file);
    TiXmlHandle elementHandle(doc.FirstChild("Token"));

    string name = "";

    if (elementHandle.ToElement()->Attribute("id"))
    {
        if (namePrefix.size() > 0)
        {
            name = StringUtilities::makeFullyQualifiedRobonetElement(namePrefix, elementHandle.ToElement()->Attribute("id"));
        }
        else
        {
            name = elementHandle.ToElement()->Attribute("id");
        }
    }
    else
    {
        NasaCommonLogging::Logger::getCategory("gov.nasa.robonet.TokenFactory") << Priority::ERROR << "The attribute [id] was not found for element [" << elementHandle.ToElement()->ValueStr() << "]";
        MissingXMLElementException missingXMLElementException;
        throw missingXMLElementException;
    }

    stringstream ss;
    uint8_t      value8   = 0;
    uint16_t     value16  = 0;
    string       valueStr = "";

    if (elementHandle.ToElement()->Attribute("value"))
    {
        valueStr = elementHandle.ToElement()->Attribute("value");
        ss << valueStr;
        ss >> hex >> value16;

        try
        {
            value8 = boost::numeric_cast<uint8_t>(value16);
        }
        catch (boost::numeric::positive_overflow& e)
        {
            NasaCommonLogging::Logger::getCategory("gov.nasa.robonet.TokenFactory") << Priority::ERROR << "Exception caught: bad numeric conversion: positive overflow on element named [" << name << "]";
        }
    }
    else
    {
        NasaCommonLogging::Logger::getCategory("gov.nasa.robonet.TokenFactory") << Priority::ERROR << "The attribute [value] was not found for element [" << elementHandle.ToElement()->ValueStr() << "]";
        MissingXMLElementException missingXMLElementException;
        throw missingXMLElementException;
    }

    //  Create and return the new token
    NasaCommonLogging::Logger::getCategory("gov.nasa.robonet.TokenFactory") << Priority::INFO << "Token created: [" << name << "] - [" << boost::lexical_cast<std::string>((int16_t)(value8)) << "]";
    return TokenMap::value_type(name, value8);
}