DecorKeyHelpers.cxx

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/*
 * Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration.
 */
#include "StoreGate/DecorKeyHelpers.h"
#include "StoreGate/exceptions.h"
#include "StoreGate/VarHandleKey.h"
 
 
namespace SG {
 
 
std::string contKeyFromKey (const std::string& key)
{
  std::string::size_type ipos = key.find ('.');
  if (ipos == std::string::npos)
    return key;
  return key.substr (0, ipos);
}
 
 
std::string decorKeyFromKey (const std::string& key, const std::string& deflt /*= ""*/)
{
  std::string::size_type ipos = key.find ('.');
  if (ipos == std::string::npos)
    return deflt;
  return key.substr (ipos+1, std::string::npos);
}
 
 
std::string makeContDecorKey(const std::string& cont, const std::string& decor)
{
  if (cont.empty()) return decor;
  if (decor.empty()) return cont;
  return cont + '.' + decor;
}
 
 
std::string makeContDecorKey(const VarHandleKey& contKey, const std::string& key)
{
  if (key.empty() || key.ends_with ('+')) {
    return "";
  }
  if (key.find('.') != std::string::npos) {
    throw SG::ExcBadHandleKey(key + " (DecorHandleKey has been declared with a parent container. "
                              "Its value should not contain any container name.)");
  }
 
  // Note: VHK::fullKey().key() contains the store prefix, key() does not.
  return makeContDecorKey( contKey.fullKey().key(), key);
}
 
 
void removeContFromDecorKey(const VarHandleKey& contKey, std::string& key)
{
  // Remove container name from key
  const std::string toerase = contKey.fullKey().key() + ".";
  const size_t pos = key.find(toerase);
  if (pos != std::string::npos) {
    key.erase(pos, toerase.size());
  }
 
}
 
} // namespace SG