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- /*
- Minetest
- Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #pragma once
- #include <string>
- #include <iostream>
- #include <unordered_map>
- #include <cassert>
- #include "irrlichttypes_bloated.h"
- typedef std::unordered_map<u16, std::string> IdToNameMap;
- typedef std::unordered_map<std::string, u16> NameToIdMap;
- class NameIdMapping
- {
- public:
- void serialize(std::ostream &os) const;
- void deSerialize(std::istream &is);
- void clear()
- {
- m_id_to_name.clear();
- m_name_to_id.clear();
- }
- void set(u16 id, const std::string &name)
- {
- assert(!name.empty());
- m_id_to_name[id] = name;
- m_name_to_id[name] = id;
- }
- void removeId(u16 id)
- {
- std::string name;
- bool found = getName(id, name);
- if (!found)
- return;
- m_id_to_name.erase(id);
- m_name_to_id.erase(name);
- }
- void eraseName(const std::string &name)
- {
- u16 id;
- bool found = getId(name, id);
- if (!found)
- return;
- m_id_to_name.erase(id);
- m_name_to_id.erase(name);
- }
- bool getName(u16 id, std::string &result) const
- {
- auto i = m_id_to_name.find(id);
- if (i == m_id_to_name.end())
- return false;
- result = i->second;
- return true;
- }
- bool getId(const std::string &name, u16 &result) const
- {
- auto i = m_name_to_id.find(name);
- if (i == m_name_to_id.end())
- return false;
- result = i->second;
- return true;
- }
- u16 size() const { return m_id_to_name.size(); }
- private:
- IdToNameMap m_id_to_name;
- NameToIdMap m_name_to_id;
- };
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