show_event_count.cxx

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//============================================================================
// Name        : show_event_count.cxx
// Author      : Konstantin Gertsenberger
// Copyright   : JINR
// Description : Get event count for the generator file
//============================================================================
 
// own headers
#include "MpdGetNumEvents.h"
 
// ROOT includes
#include "TString.h"
#include "TSystem.h"
 
// C++ includes
#include <algorithm>
#include <iostream>
#include <sstream>
#include <string>
 
using namespace std;
 
bool ends_with(string const& fullString, string const& ending)
{
    if (fullString.length() >= ending.length())
        return (0 == fullString.compare(fullString.length() - ending.length(), ending.length(), ending));
    else
        return false;
}
 
int main(int argc, char** argv)
{
    // help information
    if (argc > 1) {
        string first_par = argv[1];
        if ((first_par == "/?") || (first_par == "--help") || (first_par == "-h")) {
            cout << "The utility shows event count for a given generator file or just ROOT file" << endl
                 << "The first parameter: case-insensitive generator name (urqmd, hsd (phsd), qgsm (laqgsm,dcm-gsqm) "
                    "or 'root' value (w/o quotes)"
                 << endl
                 << "The second parameter: generator file path" << endl
                 << "Example: show_event_count dcmqgsm /eos/nica/bmn/sim/DQGSM/" << endl
                 << "Example: show_event_count root example.root" << endl;
 
            return 0;
        }
    }
 
    if (argc != 3) {
        cout << "The ShowEventCount utility takes 2 parameters: " << endl
             << "1st - generator name or 'root' value (w/o quotes); 2nd - generator or ROOT file path" << endl;
        return -1;
    }
 
    string generator_name = argv[1];
    transform(generator_name.begin(), generator_name.end(), generator_name.begin(),
              [](unsigned char c) { return tolower(c); });
    string file_path = argv[2];
 
    if (generator_name == "urqmd") {
        cout << MpdGetNumEvents::GetNumURQMDEvents(file_path.c_str(), 1);
        return 0;
    } else if (ends_with(generator_name, "hsd")) {
        cout << MpdGetNumEvents::GetNumPHSDEvents(file_path.c_str(), 1);
        return 0;
    } else if (ends_with(generator_name, "qgsm")) {
        cout << MpdGetNumEvents::GetNumQGSMEvents(file_path.c_str(), 1);
        return 0;
    } else if (ends_with(generator_name, "smm")) {
        cout << MpdGetNumEvents::GetNumDCMSMMEvents(file_path.c_str(), 1);
        return 0;
    } else if ((generator_name == "jam") || (generator_name == "rqmd")) {
        cout << MpdGetNumEvents::GetNumROOTEvents(file_path.c_str(), "events", 1);
        return 0;
    } else if (ends_with(generator_name, "root")) {
        cout << MpdGetNumEvents::GetNumROOTEvents(file_path.c_str(), nullptr, 1);
        return 0;
    } else if (generator_name == "auto") {
        cout << MpdGetNumEvents::GetNumEvents(file_path.c_str(), 1);
        return 0;
    } else {
        cout << "The generator name (or 'root' value) is not defined. See possible values: show_event_count /?";
        return -2;
    }
 
    return 0;
}