Parsing xml string

[pdk5]

I have the following input
"<?xml version="1.0"?>\r\n<MODEL-LIST>\r\n<MODEL ID="450 MHz Default" TYPE="Basic Model" />\r\n<MODEL ID="900 MHz Default" TYPE="Enhanced Model" />"

and want to parse to get the output in the following format.

const char output[100] = "450 MHz Default-Basic Model, 900 MHz Default-Enhanced Model";

I have written following code, any commnets or suggestions helpful

const char* buf = xmlStr;
int bstrlen = xmlStr.length();
std::string str(buf ? buf : "", bstrlen);

// Vector of string to save tokens 
vector <string> tokens;
vector <string> models;

// stringstream class check1 
stringstream check1(str);

string intermediate;

// Tokenizing w.r.t. space ' ' 
while (std::getline(check1, intermediate, '\n'))
{
    tokens.push_back(intermediate);
}

for (string token : tokens)
{
    std::string first = "MODEL ID="";
    std::size_t firstLim = token.find(first);      

    std::string last = "" TYPE="";
    std::size_t lastLim = token.find(last);

    if ( (firstLim != std::string::npos) && (lastLim != std::string::npos) )
    {
        std::string modelid = token.substr(firstLim, lastLim - firstLim);

        int i = first.size();

        modelid = modelid.substr(first.size());

        models.push_back(modelid);

        std::string modeltype = token.substr(lastLim);
        modeltype = modeltype.substr(last.size());

        std::string elem = """;
        std::size_t elemLim = token.find(elem);
        modeltype = modeltype.substr(elemLim);
    }
}