JWeightFileScanner.cc

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#include <string>
#include <iostream>
#include <iomanip>

#include "km3net-dataformat/offline/Head.hh"
#include "km3net-dataformat/offline/Evt.hh"

#include "JSupport/JMultipleFileScanner.hh"
#include "JSupport/JLimit.hh"
#include "JSupport/JWeightFileScannerSet.hh"

#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"


/**
 * \file
 * Example program for weighing of Monte Carlo events.
 *
 * \author bjung
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;

  JMultipleFileScanner_t inputFiles;
  JLimit                 numberOfEvents;
  int                    debug;

  try {

    JParser<> zap;

    zap['f'] = make_field(inputFiles);
    zap['n'] = make_field(numberOfEvents) = JLimit::max();    
    zap['d'] = make_field(debug)          = 1;

    zap(argc, argv);
  }
  catch(const exception& error) {
    FATAL(error.what() << endl);
  }


  JWeightFileScannerSet<> scanners(inputFiles, numberOfEvents);

  for (JWeightFileScannerSet<>::iterator scanner = scanners.begin(); scanner != scanners.end(); ++scanner) {

    if (scanner->simul.size() > 0) {
      STATUS("Scanning " << scanner->simul[0].program << " files..." << endl);
    }

    STATUS(LEFT(20) << "event" << LEFT(10) << "weight" << endl);
    
    while (scanner->hasNext()) {
      
      const Evt*   event  = scanner->next();
      const double weight = scanner->getWeight(*event);
      
      STATUS(LEFT (20)    << scanner->getCounter() <<
             FIXED(15,20) << weight << '\r'); DEBUG(endl);
    }
  }

  return 0;
}