Tukukkk

I have been unable to find a direct answer to this question. After searching for some time, I've written the following code but I'm sure that there exists a simpler way of doing the same task.

int persistJSONChanges(rapidjson::Document& fa_cloneDoc, string jsonFilePath)

{

        FILE* lp_file = fopen(jsonFilePath.c_str(), "w");

        rapidjson::StringBuffer buffer;

        rapidjson::PrettyWriter<rapidjson::StringBuffer> writer(buffer);

        fa_cloneDoc.Accept(writer);



        string temp=buffer.GetString();

        unique_ptr<char>l_writeBuffer(new char[temp.size()]);

        rapidjson::FileWriteStream l_writeStream(lp_file, l_writeBuffer.get(), temp.size());

        rapidjson::PrettyWriter<rapidjson::FileWriteStream> l_writer(l_writeStream);

        bool l_returnStatus=fa_cloneDoc.Accept(l_writer);

        if(l_returnStatus==false)

        {

                cout<<endl<<"file update failed"<<endl;

                return -1;

           }

        fclose(lp_file);

        return 0;

}

I think you misused the FileWriteStream. It just needs a buffer of arbitrary size.

You simply needs:

FILE* fp = fopen(...);

char buffer[1024];

FileWriteStream fs(fp, buffer, sizeof(buffer));

PrettyWriter<FileWriteStream> writer(fs);

document.Accept(writer);

fclose(fp);

I have tried the following which worked for me:

int persistJSONChanges(rapidjson::Document& fa_cloneDoc, string jsonFilePath)

{



                rapidjson::StringBuffer buffer;

                rapidjson::PrettyWriter<rapidjson::StringBuffer> writer(buffer);

                bool l_returnStatus=fa_cloneDoc.Accept(writer);

                if(l_returnStatus==false)

                {

                        fprintf(stdout,"n[%s::%d] JSON File update failedn",__FILE__,__LINE__);



                        return -1;

                }



                string temp=buffer.GetString();

                ofstream out(jsonFilePath.c_str(),std::ofstream::trunc);

                out<<temp;

                return 0;

}