Program Listing for File configuration.cpp

↰ Return to documentation for file (lib/utilities/configuration.cpp)

// ---------------------------------------------------------------------
// This file is part of falcon-core.
//
// Copyright (C) 2015, 2016, 2017 Neuro-Electronics Research Flanders
//
// Falcon-server is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Falcon-server 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with falcon-core. If not, see <http://www.gnu.org/licenses/>.
// ---------------------------------------------------------------------

#include <iostream>
#include <regex>
#include <stdexcept>
#include <string>

#include "yaml-cpp/yaml.h"

#include "configuration.hpp"
#include "filesystem.hpp"

void Configuration::load(std::string filename) {
  auto p = parse_file(filename);

  try {
    YAML::Node node;
    node = YAML::LoadFile(p.string());
    options_.from_yaml(node, {}, false);
    std::cout << "Default configuration loaded from " << p.string()
              << std::endl;
  } catch (YAML::BadFile
               &e) {  // config file does not exist, save default configuration
    try {
      // create parent path if it doesn't exist
      parse_directory(p.parent_path().string(), true, true);
      // save default config
      save(p.string());
      std::cout << "Default configuration saved to " << p.string() << "."
                << std::endl;
    } catch (std::runtime_error &e) {
      std::cout << "Warning: could not save configuration file: " << e.what()
                << std::endl;
    }
  }
}

void Configuration::save(std::string filename) { options_.save_yaml(filename); }