NameManager.hpp

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#ifndef DART_COMMON_DETAIL_NAMEMANAGER_HPP_
#define DART_COMMON_DETAIL_NAMEMANAGER_HPP_
 
#include <sstream>
#include <cassert>
#include "dart/common/Console.hpp"
#include "dart/common/NameManager.hpp"
 
namespace dart {
namespace common {
 
//==============================================================================
template <class T>
NameManager<T>::NameManager(const std::string& _managerName,
                            const std::string& _defaultName)
  : mManagerName(_managerName),
    mDefaultName(_defaultName),
    mNameBeforeNumber(true),
    mPrefix(""), mInfix("("), mAffix(")")
{
  // Do nothing
}
 
//==============================================================================
template <class T>
bool NameManager<T>::setPattern(const std::string& _newPattern)
{
  std::size_t name_start = _newPattern.find("%s");
  std::size_t number_start = _newPattern.find("%d");
 
  if(name_start == std::string::npos || number_start == std::string::npos)
    return false;
 
  if(name_start < number_start)
    mNameBeforeNumber = true;
  else
    mNameBeforeNumber = false;
 
  std::size_t prefix_end = std::min(name_start, number_start);
  std::size_t infix_end = std::max(name_start, number_start);
 
  mPrefix = _newPattern.substr(0, prefix_end);
  mInfix = _newPattern.substr(prefix_end+2, infix_end-prefix_end-2);
  mAffix = _newPattern.substr(infix_end+2);
 
  return true;
}
 
//==============================================================================
template <class T>
std::string NameManager<T>::issueNewName(const std::string& _name) const
{
  if(!hasName(_name))
    return _name;
 
  int count = 1;
  std::string newName;
  do
  {
    std::stringstream ss;
    if(mNameBeforeNumber)
      ss << mPrefix << _name << mInfix << count++ << mAffix;
    else
      ss << mPrefix << count++ << mInfix << _name << mAffix;
    newName = ss.str();
  } while (hasName(newName));
 
  dtmsg << "[NameManager::issueNewName] (" << mManagerName << ") The name ["
        << _name << "] is a duplicate, so it has been renamed to ["
        << newName << "]\n";
 
  return newName;
}
 
//==============================================================================
template <class T>
std::string NameManager<T>::issueNewNameAndAdd(const std::string& _name,
                                               const T& _obj)
{
  const std::string& checkEmpty = _name.empty()? mDefaultName : _name;
  const std::string& newName = issueNewName(checkEmpty);
  addName(newName, _obj);
 
  return newName;
}
 
//==============================================================================
template <class T>
bool NameManager<T>::addName(const std::string& _name, const T& _obj)
{
  if (_name.empty())
  {
    dtwarn << "[NameManager::addName] (" << mManagerName
           << ") Empty name is not allowed!\n";
    return false;
  }
 
  if (hasName(_name))
  {
    dtwarn << "[NameManager::addName] (" << mManagerName << ") The name ["
           << _name << "] already exists!\n";
    return false;
  }
 
  mMap.insert(std::pair<std::string, T>(_name, _obj));
  mReverseMap.insert(std::pair<T, std::string>(_obj, _name));
 
  assert(mReverseMap.size() == mMap.size());
 
  return true;
}
 
//==============================================================================
template <class T>
bool NameManager<T>::removeName(const std::string& _name)
{
  assert(mReverseMap.size() == mMap.size());
 
  typename std::map<std::string, T>::iterator it = mMap.find(_name);
 
  if (it == mMap.end())
    return false;
 
  typename std::map<T, std::string>::iterator rit =
      mReverseMap.find(it->second);
 
  if (rit != mReverseMap.end())
    mReverseMap.erase(rit);
 
  mMap.erase(it);
 
  return true;
}
 
//==============================================================================
template <class T>
bool NameManager<T>::removeObject(const T& _obj)
{
  assert(mReverseMap.size() == mMap.size());
 
  typename std::map<T, std::string>::iterator rit = mReverseMap.find(_obj);
 
  if (rit == mReverseMap.end())
    return false;
 
  typename std::map<std::string, T>::iterator it = mMap.find(rit->second);
  if (it != mMap.end())
    mMap.erase(it);
 
  mReverseMap.erase(rit);
 
  return true;
}
 
//==============================================================================
template <class T>
void NameManager<T>::removeEntries(const std::string& _name, const T& _obj)
{
  removeObject(_obj);
  removeName(_name);
}
 
//==============================================================================
template <class T>
void NameManager<T>::clear()
{
  mMap.clear();
  mReverseMap.clear();
}
 
//==============================================================================
template <class T>
bool NameManager<T>::hasName(const std::string& _name) const
{
  return (mMap.find(_name) != mMap.end());
}
 
//==============================================================================
template <class T>
bool NameManager<T>::hasObject(const T& _obj) const
{
  return (mReverseMap.find(_obj) != mReverseMap.end());
}
 
//==============================================================================
template <class T>
std::size_t NameManager<T>::getCount() const
{
  return mMap.size();
}
 
//==============================================================================
template <class T>
T NameManager<T>::getObject(const std::string& _name) const
{
  typename std::map<std::string, T>::const_iterator result =
      mMap.find(_name);
 
  if (result != mMap.end())
    return result->second;
  else
    return nullptr;
}
 
//==============================================================================
template <class T>
std::string NameManager<T>::getName(const T& _obj) const
{
  assert(mReverseMap.size() == mMap.size());
 
  typename std::map<T, std::string>::const_iterator result =
      mReverseMap.find(_obj);
 
  if (result != mReverseMap.end())
    return result->second;
  else
    return "";
}
 
//==============================================================================
template <class T>
std::string NameManager<T>::changeObjectName(const T& _obj,
                                             const std::string& _newName)
{
  assert(mReverseMap.size() == mMap.size());
 
  typename std::map<T, std::string>::iterator rit = mReverseMap.find(_obj);
  if(rit == mReverseMap.end())
    return _newName;
 
  if(rit->second == _newName)
    return rit->second;
 
  removeName(rit->second);
  return issueNewNameAndAdd(_newName, _obj);
}
 
//==============================================================================
template <class T>
void NameManager<T>::setDefaultName(const std::string& _defaultName)
{
  mDefaultName = _defaultName;
}
 
//==============================================================================
template <class T>
const std::string& NameManager<T>::getDefaultName() const
{
  return mDefaultName;
}
 
//==============================================================================
template <class T>
void NameManager<T>::setManagerName(const std::string& _managerName)
{
  mManagerName = _managerName;
}
 
//==============================================================================
template <class T>
const std::string& NameManager<T>::getManagerName() const
{
  return mManagerName;
}
 
} // namespace common
} // namespace dart
 
#endif // DART_COMMON_DETAIL_NAMEMANAGER_HPP_