BSFilePeeker Class Reference

Collaboration diagram for BSFilePeeker:

Public Member Functions
	BSFilePeeker (const std::string &filename)
const FileMetaData &	get () const

Private Member Functions
bool	extractValue (std::string_view source, std::string_view key, std::string &value)

Private Attributes
FileMetaData	m_fmd

Detailed Description

Definition at line 14 of file BSFilePeeker.cxx.

Constructor & Destructor Documentation

BSFilePeeker()

BSFilePeeker::BSFilePeeker

(

const std::string &

filename

)

Definition at line 42 of file BSFilePeeker.cxx.

                                                 {
 
  m_fmd.m_fileName=fName;
  DataReader *pDR = pickDataReader(fName);
 
  if(!pDR) {
    std::cerr << "Problem opening or reading the bytestream file " 
          << fName << std::endl;
    return;
  }
 
  if(!pDR->good()) {
    std::cerr << "No events in file "<< fName << std::endl;
  }
 
  m_fmd.m_runNumbers.insert(pDR->runNumber());
  m_fmd.m_lbNumbers.insert(pDR->lumiblockNumber());
  m_fmd.m_project=pDR->projectTag();
  m_fmd.m_stream=pDR->stream();
  m_fmd.m_nEvents=pDR->eventsInFile();
  m_fmd.m_beamEnergy=pDR->beamEnergy()*1000;
  m_fmd.m_guid=pDR->GUID();
 
  const unsigned bt=pDR->beamType();
 
  //Accoring to info from Rainer and Guiseppe the beam type is
  //0: No beam
  //1: protons
  //2: ions
  switch (bt) {
  case 0:
    m_fmd.m_beamType="cosmics";
    break;
  case 1: 
  case 2: //actally heavy-ion
    m_fmd.m_beamType="collisions";
    break;
  default:
    std::cerr << "WARNING: Unexpected beam type integer in BS file. Got " << bt << std::endl;
    m_fmd.m_beamType="unknown";
  }
 
 
  m_fmd.m_isMC=false; //Generaly, BS-files are real data
  const std::vector<std::string> fmds=pDR->freeMetaDataStrings();
  std::string eventTypeMD;
  for (const std::string& fm : fmds) {
    extractValue(fm,"GeoAtlas",m_fmd.m_geoTag);
    extractValue(fm,"IOVDbGlobalTag",m_fmd.m_condTag);
    extractValue(fm,"Event type",eventTypeMD);
  }
 
  if (eventTypeMD.find("is sim")!=std::string::npos) {
    m_fmd.m_isMC=true; //This is a simulated bytestream file
  }
 
 
  m_fmd.m_valid=true;
  delete pDR;
}

Member Function Documentation

extractValue()

bool BSFilePeeker::extractValue ( std::string_view source, std::string_view key, std::string & value )

private

Definition at line 30 of file BSFilePeeker.cxx.

                                                                                           {
 
  const size_t sep=source.find(':');
  if (sep==std::string_view::npos || source.substr(0,sep) != key) {
    return false;
  }
  else {
    value.assign(source.substr(sep+1));
    return true;
  }
}

get()

const FileMetaData & BSFilePeeker::get ( ) const

inline

Definition at line 19 of file BSFilePeeker.cxx.

{return m_fmd;}

Member Data Documentation

m_fmd

FileMetaData BSFilePeeker::m_fmd

private

Definition at line 25 of file BSFilePeeker.cxx.

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The documentation for this class was generated from the following file:

• BSFilePeeker.cxx