EFTrackingDataStreamUnloaderAlgorithm.cxx

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/*
 *   Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
 */
 
#include <fstream> // For Csv.
#include <sstream>
#include <iomanip>
#include <string>
#include <vector>
 
#include "EFTrackingDataStreamUnloaderAlgorithm.h"
 
namespace {
std::string toHex(const unsigned long src) {
  std::stringstream stringStream{};
  stringStream << std::hex << src;
 
  return stringStream.str();
}
 
std::string padString(const std::string& src, std::size_t width) {
  std::string dst = src;
  dst.insert(dst.begin(), width - src.size(), '0');
 
  return dst;
}
}
 
EFTrackingDataStreamUnloaderAlgorithm::EFTrackingDataStreamUnloaderAlgorithm(
  const std::string& name,
  ISvcLocator* pSvcLocator
) : AthReentrantAlgorithm(name, pSvcLocator)
{}
 
StatusCode EFTrackingDataStreamUnloaderAlgorithm::initialize() {
  ATH_MSG_INFO("Initializing " << name());
  ATH_CHECK(m_outputDataStreamKey.initialize());
 
  return StatusCode::SUCCESS;
}
 
StatusCode EFTrackingDataStreamUnloaderAlgorithm::execute(const EventContext& ctx) const {
  SG::ReadHandle<std::vector<unsigned long>> outputDataStream(
    m_outputDataStreamKey,
    ctx
  );
 
  std::ofstream outputFile(m_outputCsvPath);
 
  if (!outputFile.is_open()) {
    ATH_MSG_ERROR("Failed to write " << m_outputCsvPath);
 
    return StatusCode::FAILURE;
  }
 
  for (const unsigned long word : *outputDataStream) {
    outputFile << padString(toHex(word), 16) << std::endl;
  }
 
  return StatusCode::SUCCESS;
}