#include <config/config.hpp> #include <iostream> #include <sstream> #include <stdlib.h> std::string Config::filename{}; bool Config::file_must_exist = false; std::string Config::get(const std::string& option, const std::string& def) { Config* self = Config::instance().get(); auto it = self->values.find(option); if (it == self->values.end()) return def; return it->second; } int Config::get_int(const std::string& option, const int& def) { Config* self = Config::instance().get(); std::string res = self->get(option, ""); if (!res.empty()) return atoi(res.c_str()); else return def; } void Config::set(const std::string& option, const std::string& value, bool save) { Config* self = Config::instance().get(); self->values[option] = value; if (save) { self->save_to_file(); self->trigger_configuration_change(); } } void Config::connect(t_config_changed_callback callback) { Config* self = Config::instance().get(); self->callbacks.push_back(callback); } void Config::close() { Config* self = Config::instance().get(); self->values.clear(); Config::instance().reset(); } /** * Private methods */ void Config::trigger_configuration_change() { std::vector<t_config_changed_callback>::iterator it; for (it = this->callbacks.begin(); it < this->callbacks.end(); ++it) (*it)(); } std::unique_ptr<Config>& Config::instance() { static std::unique_ptr<Config> instance; if (!instance) { instance = std::make_unique<Config>(); instance->read_conf(); } return instance; } bool Config::read_conf() { std::ifstream file; file.open(filename.data()); if (!file.is_open()) { if (Config::file_must_exist) { perror(("Error while opening file " + filename + " for reading.").c_str()); file.exceptions(std::ifstream::failbit); } return false; } std::string line; size_t pos; std::string option; std::string value; while (file.good()) { std::getline(file, line); if (line == "" || line[0] == '#') continue ; pos = line.find('='); if (pos == std::string::npos) continue ; option = line.substr(0, pos); value = line.substr(pos+1); this->values[option] = value; } return true; } void Config::save_to_file() const { std::ofstream file(this->filename.data()); if (file.fail()) { std::cerr << "Could not save config file." << std::endl; return ; } for (auto& it: this->values) file << it.first << "=" << it.second << std::endl; file.close(); }