RootAuxDynDefs.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
#ifndef ROOTAUXDYN_DEFS_H
#define ROOTAUXDYN_DEFS_H
 
#include <format>
 
namespace RootAuxDynIO
{
   constexpr char   AUX_POSTFIX[] = "Aux.";
   constexpr size_t AUX_POSTFIX_LEN = sizeof(AUX_POSTFIX)-1;
   constexpr char   AUXDYN_POSTFIX[] = "Dyn.";
   constexpr size_t AUXDYN_POSTFIX_LEN = sizeof(AUXDYN_POSTFIX)-1;

   inline bool endsWithAuxPostfix(std::string_view str) {
      return str.ends_with(AUX_POSTFIX);
   }

   bool removeAuxPostfix(std::string& str);

   std::string auxBranchName(const std::string& attr_name, const std::string& baseBranchName);

   std::string auxFieldName(const std::string& attr_name, const std::string& baseName);
 
} // namespace
 
 
inline bool
RootAuxDynIO::removeAuxPostfix(std::string& str)
{
   if( endsWithAuxPostfix(str) ) {
      str.resize( str.size() - AUX_POSTFIX_LEN );
      return true;
   }
   return false;
}
 
 
inline std::string
RootAuxDynIO::auxBranchName(const std::string& attr_name, const std::string& baseBranchName)
{
   std::string branch_name = baseBranchName;
   if( !branch_name.empty() and branch_name.back() == '.' )  branch_name.pop_back();
   branch_name += RootAuxDynIO::AUXDYN_POSTFIX + attr_name;
   return branch_name;
}
 
inline std::string
RootAuxDynIO::auxFieldName(const std::string& attr_name, const std::string& baseName)
{
   // RNTuple field names cannot contain dot characters '.'
   // Therefore, for now, we're using a colon instead ':'
   // This can be changed in the future
   std::string field_name = baseName;
   if (field_name.ends_with(':')) {
     field_name.pop_back();
   }
   field_name = std::format("{}Dyn:{}", field_name, attr_name);
   return field_name;
}
 
#endif