goldberg_emulator/dll/item_db_loader.cpp

63 lines
2.1 KiB
C++

/* Copyright (C) 2019 Nemirtingas (Maxime P)
This file is part of the Goldberg Emulator
The Goldberg Emulator 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 3 of the License, or (at your option) any later version.
The Goldberg Emulator 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 the Goldberg Emulator; if not, see
<http://www.gnu.org/licenses/>. */
#include "item_db_loader.h"
#include <fstream>
#include "json.hpp"
std::map<SteamItemDef_t, std::map<std::string, std::string>> read_items_db(std::string const& items_db)
{
std::map<SteamItemDef_t, std::map<std::string, std::string>> items;
std::ifstream items_file(items_db);
// If there is a file and we opened it
if( items_file )
{
items_file.seekg(0, std::ios::end);
size_t size = items_file.tellg();
std::string buffer(size, '\0');
items_file.seekg(0);
// Read it entirely, if the .json file gets too big,
// I should look into this and split reads into smaller parts.
items_file.read(&buffer[0], size);
items_file.close();
try
{
std::map<SteamItemDef_t, std::map<std::string, std::string>> tmp;
nlohmann::json json = nlohmann::json::parse(buffer);
for (auto& i : json.items())
{
SteamItemDef_t key = std::stoi((*i).key());
nlohmann::json& value = (*i).value();
for (auto& j : value.items())
{
tmp[key][(*j).key()] = (*j).value();
}
}
items.swap(tmp);
}
catch (std::exception& e)
{
PRINT_DEBUG("Error while parsing json: %s", e.what());
}
}
return items;
}