110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
/* ***********************************************************************
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//
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// Copyright (C) 2025 -- The 4D-STAR Collaboration
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// File Author: Emily Boudreaux
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// Last Modified: March 20, 2025
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//
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// 4DSSE is free software; you can use it and/or modify
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// it under the terms and restrictions the GNU General Library Public
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// License version 3 (GPLv3) as published by the Free Software Foundation.
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//
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// 4DSSE is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public License
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// along with this software; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// *********************************************************************** */
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#include <string>
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <vector>
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#include <map>
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#include "yaml-cpp/yaml.h"
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#include "config.h"
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namespace serif::config {
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Config::Config() {}
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Config::~Config() {}
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Config& Config::getInstance() {
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static Config instance;
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return instance;
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}
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bool Config::loadConfig(const std::string& configFile) {
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configFilePath = configFile;
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try {
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yamlRoot = YAML::LoadFile(configFile);
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} catch (YAML::BadFile& e) {
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std::cerr << "Error: " << e.what() << std::endl;
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return false;
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}
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m_loaded = true;
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return true;
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}
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bool Config::isKeyInCache(const std::string &key) {
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return configMap.find(key) != configMap.end();
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}
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void Config::addToCache(const std::string &key, const YAML::Node &node) {
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configMap[key] = node;
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}
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void Config::registerUnknownKey(const std::string &key) {
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unknownKeys.push_back(key);
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}
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bool Config::has(const std::string &key) {
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if (!m_loaded) {
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throw std::runtime_error("Error! Config file not loaded");
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}
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if (isKeyInCache(key)) { return true; }
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YAML::Node node = YAML::Clone(yamlRoot);
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std::istringstream keyStream(key);
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std::string subKey;
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while (std::getline(keyStream, subKey, ':')) {
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if (!node[subKey]) {
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registerUnknownKey(key);
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return false;
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}
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node = node[subKey]; // go deeper
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}
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// Key exists and is of the requested type
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addToCache(key, node);
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return true;
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}
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void recurse_keys(const YAML::Node& node, std::vector<std::string>& keyList, const std::string& path = "") {
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if (node.IsMap()) {
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for (const auto& it : node) {
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auto key = it.first.as<std::string>();
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auto new_path = path.empty() ? key : path + ":" + key;
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recurse_keys(it.second, keyList, new_path);
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}
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} else {
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keyList.push_back(path);
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}
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}
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std::vector<std::string> Config::keys() const {
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std::vector<std::string> keyList;
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YAML::Node node = YAML::Clone(yamlRoot);
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recurse_keys(node, keyList);
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return keyList;
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}
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}
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