Add values to map using rapidjson

Question

I get a raw json string

{"vehicle": {"brand": "zonda","color": "blue"},"username": {"brand": "doyota","color": "red"}}

from a get call i make.

I read that rapidjson is the best way to parse a json string in cpp.

So I tried doing something like this:

const char* json = data.c_str();
rapidjson::Document document;
if (document.Parse(json).HasParseError()) {

    cout << "has parse error" << endl;

    return 1;
}
else {
    assert(document.IsObject());
}

Here it says that the json has a parse error. Any idea why this could be?

Also once I am able to parse the values I want to add them as key value pairs to a standard map. Could anyone point me in the right direction to proceed with this?

Answer 1

This gave me no error:

#include <iostream>
#include "rapidjson/document.h"
#include "rapidjson/error/en.h"

using namespace rapidjson;

int main() {
    Document d;
    std::string json = R"raw({"vehicle": {"brand": "zonda","color": "blue"},"username": {"brand": "doyota","color": "red"}})raw";

    if (d.Parse(json.c_str()).HasParseError()) {
        std::cout << "has error\n";
    } else {
        std::cout << "no error\n";
    }
}

Tried C++11 - C++20 and it all seems fine. My guess is that you've got some non UTF8 character in the data.