OfflineOnlineIdConversion.cxx

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/*
  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
*/
 
#include "MuonCalibIdentifier/OfflineOnlineIdConversion.h"
#include "GaudiKernel/MsgStream.h"
#include "AthenaKernel/getMessageSvc.h"
 
#include "cstdlib"
 
namespace MuonCalib {
 
MuonFixedId OnlineToOffline(const std::string& online_id)
    {
    MuonFixedId ret(0), invalid;
    ret.set_mdt();
//minimum size of idenifier is 7
    if (online_id.size()!=7 && online_id.size()!=9)
        {
        MsgStream log(Athena::getMessageSvc(),"OnlineToOffline");
        log<<MSG::WARNING<<"Wrong length for online_id="<<online_id<<endmsg;
        return invalid;
        }
//check for A/C side
    bool c_side(false);
    if(online_id[4]!='A' && online_id[4]!='C' && online_id[4]!='B')
        {
        MsgStream log(Athena::getMessageSvc(),"OnlineToOffline");
        log<<MSG::WARNING<<"Invalid side for online_id="<<online_id<<endmsg;
        return invalid;
        }
    if(online_id[4]=='C')
        {
        c_side=true;
        }
//set station name
    std::string station_nm_string(online_id, 0, 3);
    int station_mm = MuonFixedId::stationStringToFixedStationNumber(station_nm_string);
    if (station_mm<0)
        {
        MsgStream log(Athena::getMessageSvc(),"OnlineToOffline");
        log<<MSG::WARNING<<"Invalid station name for online_id="<<online_id<<endmsg;
        return invalid;
        }
//set eta
    ret.setStationName(station_mm);
    char eta_str[2];
    char *endptr;
    eta_str[0]=online_id[3];
    eta_str[1]='\0';
    long int eta=strtol(eta_str, &endptr, 10);
    if(endptr!=&(eta_str[1]))
        {
        MsgStream log(Athena::getMessageSvc(),"OnlineToOffline");
        log<<MSG::WARNING<<"eta is not a number for online_id="<<online_id<<endmsg;
        return invalid;
        }
//set phi
    char phi_str[3];
    phi_str[0]=online_id[5];
    phi_str[1]=online_id[6];
    phi_str[2]='\0';
    long int phi=strtol(phi_str, &endptr, 10);
    if(endptr!=&(phi_str[2]))
        {
        MsgStream log(Athena::getMessageSvc(),"OnlineToOffline");
        log<<MSG::WARNING<<"phi is not a number for online_id="<<online_id<<endmsg;
        return invalid;
        }
//treat special cases
    if(phi==13 && eta>3 && station_nm_string=="BML")
        {
        eta--;
        }
    if(station_nm_string=="BOF")
        eta=(eta+1)/2;
    else if(station_nm_string=="BOG")
        eta/=2;
    else 
        {
        if((phi==1 || phi==9) && station_nm_string=="EIL")
            {
            if(eta==5) eta=4;
            else if(eta==4) eta=5;
            }
        if(phi==5 && station_nm_string=="EEL") eta=1;
        }
//convert online to offline phi 
    if(station_nm_string[2]=='L' || station_nm_string[2]=='M' || station_nm_string[2]=='R')
        {
        phi++;
        }
    phi/=2;
    ret.setStationEta(c_side?(eta*-1):eta);
    ret.setStationPhi(phi);
//set multilayer id if present
    if(online_id.size()==9)
        {
        switch(online_id[8])
            {
            case '1':
                ret.setMdtMultilayer(1);
                break;
            case '2':
                ret.setMdtMultilayer(2);
                break;
            default:
                MsgStream log(Athena::getMessageSvc(),"OnlineToOffline");
                log<<MSG::WARNING<<"Multilayer is neither 1 or 2 for online_id="<<online_id<<endmsg;
                return invalid;
            }
        return ret.mdtMultilayerId();
        }   
    return ret.mdtChamberId();
    }
 
 
}