Popen

//
// Created by lhk on 21.08.16.
//

#include "urho_popen.h"

void get_pT_urho_popen(const double& u, const double& rho, double& p, double& T){
    FILE *in;
    char buff[512];


    //const char* command=("Python/python3 piap.py "+ to_string(u)+" "+to_string(rho)).c_str();
    //cout<< "command for subprocess: "<<command<<endl;

    ostringstream command;
    command<<"cd ; python3 piap.py "<<u<<" "<<rho;
    cout<<"command for subprocess: "<<command.str()<<endl;
    if(!(in = popen(command.str().c_str(), "r"))){
        cout<<"some problem with the subprocess"<<endl;
    }
    double data[2];
    int idx=0;

    cout<<"ran the subprocess"<<endl;
    while(fgets(buff, sizeof(buff), in)!=NULL){
        data[idx] = atof(buff);
        cout <<data[idx]<<endl;
        idx++;
        cout <<"new line"<<endl;
    }
    pclose(in);

    p=data[0];
    T=data[1];
    return;
}