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R__LOAD_LIBRARY(ROOTNTuple)
#include <stdio.h>
#include <iostream>
#include <vector>
#include <ROOT/RNTuple.hxx>
#include <ROOT/RNTupleModel.hxx>
using RNTupleModel = ROOT::Experimental::RNTupleModel;
using RNTupleWriter = ROOT::Experimental::RNTupleWriter;
using RNTupleWriteOptions = ROOT::Experimental::RNTupleWriteOptions;
#define JAGGED0_CLUSTERSIZE 16777197
void make_jagged0_rntuple(std::string compress_str, int compress_int) {
auto model = RNTupleModel::Create();
std::shared_ptr<float> field = model->MakeField<float>("field");
RNTupleWriteOptions options;
options.SetCompression(compress_int);
std::string name = std::string("/home/jpivarski/storage/data/chep-2021-jagged-jagged-jagged/") + compress_str + "-rntuple-jagged0.root";
auto rntuple = RNTupleWriter::Recreate(std::move(model), "rntuple", name, options);
rntuple->fClusterSizeEntries = JAGGED0_CLUSTERSIZE;
FILE* content = fopen("/home/jpivarski/storage/data/chep-2021-jagged-jagged-jagged/sample-content.float32", "r");
float c = 3.14;
while (fread(&c, sizeof(float), 1, content) != 0) {
*field = c;
rntuple->Fill();
}
}
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