include/Geant4/G4CsvHnRFileManager.icc

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
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0025 //
0026 //
0027 // Author: Ivana Hrivnacova, 26/08/2021 (ivana@ipno.in2p3.fr)
0028
0029 #include "G4AnalysisUtilities.hh"
0030
0031 #include "tools/rcsv_histo"
0032
0033 //_____________________________________________________________________________
0034 template <typename HT>
0035 inline
0036 G4String G4CsvHnRFileManager<HT>::GetHnFileName(
0037   const G4String& hnType, const G4String& hnName,
0038   const G4String& fileName, G4bool isUserFileName) const
0039 {
0040   if ( isUserFileName ) {
0041     return fRFileManager->GetFullFileName(fileName);
0042   }
0043   return fRFileManager->GetHnFileName(hnType, hnName);
0044 }
0045
0046 //_____________________________________________________________________________
0047 template <typename HT>
0048 inline
0049 HT*  G4CsvHnRFileManager<HT>::ReadT(
0050   std::istream& htFile, const G4String& fileName, std::string_view inFunction)
0051 {
0052   tools::rcsv::histo handler(htFile);
0053   std::string objectTypeInFile;
0054   void* object;
0055   auto verbose = false;
0056   if ( ! handler.read(G4cout, objectTypeInFile, object, verbose) ) {
0057     G4Analysis::Warn(
0058       "Cannot get " + G4Analysis::GetHnType<HT>() + " in file " + fileName,
0059       fkClass, inFunction);
0060     return nullptr;
0061   }
0062   if (objectTypeInFile != HT::s_class()) {
0063     G4Analysis::Warn(
0064       "Object type read in " + G4Analysis::GetHnType<HT>() +" does not match",
0065       fkClass, inFunction);
0066     return nullptr;
0067   }
0068
0069   return static_cast<HT*>(object);
0070 }
0071
0072 //_____________________________________________________________________________
0073 template <typename HT>
0074 inline
0075 HT* G4CsvHnRFileManager<HT>::Read(
0076   const G4String& htName, const G4String& fileName, const G4String& dirName,
0077   G4bool isUserFileName)
0078 {
0079   // Get file name
0080   auto htFileName =
0081     GetHnFileName(G4Analysis::GetHnType<HT>(), htName, fileName, isUserFileName);
0082
0083   // Update directory path
0084   if ( ! dirName.empty() ) {
0085     htFileName = "./" + dirName + "/" + htFileName;
0086   }
0087
0088   std::ifstream htFile(htFileName);
0089   if ( ! htFile.is_open() ) {
0090     G4Analysis::Warn("Cannot open file " + htFileName, fkClass, "Read");
0091     return nullptr;
0092   }
0093
0094   auto ht = ReadT(htFile, htFileName, "Read");
0095   return ht;
0096 }