#if !defined(__CLING__) || defined(__ROOTCLING__)

#include "Field/MagneticWrapperChebyshev.h"

#include <TSystem.h>

#include <TFile.h>

#include <TKey.h>

#include <TList.h>

#include <TIterator.h>

#include <string>

#include <iostream>

#endif

using MapClass = o2::field::MagneticWrapperChebyshev;

// This macro converts all mag.field objects in the inpFileName file to text files named as <prefix><map_name>

// in current directory

int extractMapsAsText(const std::string inpFileName = "$O2_ROOT/share/Common/maps/mfchebKGI_sym.root",

const std::string prefix = "_alice_mag_map_")

{

int nMaps = 0;

TFile inpFile(inpFileName.c_str());

if (!inpFile.IsOpen() || inpFile.IsZombie()) {

std::cout << "Failed to open file " << inpFileName << " with maps\n";

return nMaps;

}

TIter nextKey(inpFile.GetListOfKeys());

TObject* obj = nullptr;

while ((obj = nextKey())) {

if (obj->IsA() == TKey::Class()) {

auto magmap = dynamic_cast<MapClass*>(inpFile.Get(obj->GetName()));

if (!magmap) {

std::cout << "Failed to load map " << obj->GetName();

return -nMaps;

}

std::string outName = prefix + obj->GetName() + ".txt";

std::cout << "Dumping map " << obj->GetName() << " as a text to " << outName << "\n";

magmap->saveData(outName.c_str());

nMaps++;

}

}

return nMaps;

}