Davide Pesavento
139 lines
4.2 KiB
C++
139 lines
4.2 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2014-2019, Regents of the University of California,
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* Arizona Board of Regents,
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* Colorado State University,
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* University Pierre & Marie Curie, Sorbonne University,
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* Washington University in St. Louis,
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* Beijing Institute of Technology,
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* The University of Memphis.
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*
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* This file is part of NFD (Named Data Networking Forwarding Daemon).
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* See AUTHORS.md for complete list of NFD authors and contributors.
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*
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* NFD is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Foundation,
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* either version 3 of the License, or (at your option) any later version.
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*
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* NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config-file.hpp"
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#include <boost/property_tree/info_parser.hpp>
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#include <fstream>
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#include <sstream>
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namespace nfd {
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ConfigFile::ConfigFile(UnknownConfigSectionHandler unknownSectionCallback)
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: m_unknownSectionCallback(unknownSectionCallback)
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{
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}
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void
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ConfigFile::throwErrorOnUnknownSection(const std::string& filename,
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const std::string& sectionName,
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const ConfigSection& section,
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bool isDryRun)
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{
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NDN_THROW(Error("Error processing configuration file " + filename +
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": no module subscribed for section '" + sectionName + "'"));
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}
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void
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ConfigFile::ignoreUnknownSection(const std::string& filename,
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const std::string& sectionName,
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const ConfigSection& section,
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bool isDryRun)
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{
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// do nothing
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}
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bool
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ConfigFile::parseYesNo(const ConfigSection& node, const std::string& key,
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const std::string& sectionName)
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{
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auto value = node.get_value<std::string>();
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if (value == "yes") {
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return true;
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}
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else if (value == "no") {
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return false;
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}
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NDN_THROW(Error("Invalid value '" + value + "' for option '" +
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key + "' in section '" + sectionName + "'"));
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}
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void
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ConfigFile::addSectionHandler(const std::string& sectionName,
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ConfigSectionHandler subscriber)
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{
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m_subscriptions[sectionName] = subscriber;
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}
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void
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ConfigFile::parse(const std::string& filename, bool isDryRun)
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{
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std::ifstream inputFile(filename);
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if (!inputFile.good() || !inputFile.is_open()) {
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NDN_THROW(Error("Failed to read configuration file " + filename));
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}
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parse(inputFile, isDryRun, filename);
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inputFile.close();
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}
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void
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ConfigFile::parse(const std::string& input, bool isDryRun, const std::string& filename)
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{
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std::istringstream inputStream(input);
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parse(inputStream, isDryRun, filename);
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}
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void
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ConfigFile::parse(std::istream& input, bool isDryRun, const std::string& filename)
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{
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try {
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boost::property_tree::read_info(input, m_global);
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}
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catch (const boost::property_tree::info_parser_error& error) {
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NDN_THROW(Error("Failed to parse configuration file " + filename +
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": " + error.message() + " on line " + to_string(error.line())));
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}
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process(isDryRun, filename);
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}
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void
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ConfigFile::parse(const ConfigSection& config, bool isDryRun, const std::string& filename)
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{
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m_global = config;
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process(isDryRun, filename);
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}
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void
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ConfigFile::process(bool isDryRun, const std::string& filename) const
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{
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BOOST_ASSERT(!filename.empty());
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for (const auto& i : m_global) {
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try {
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const ConfigSectionHandler& subscriber = m_subscriptions.at(i.first);
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subscriber(i.second, isDryRun, filename);
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}
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catch (const std::out_of_range&) {
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m_unknownSectionCallback(filename, i.first, i.second, isDryRun);
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}
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}
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}
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} // namespace nfd
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