Initial commit, allows for storing simpel values and boost::hana adapted structs at "key"HEADmaster

1 files changed, 94 insertions, 0 deletions

diff --git a/configpp.hpp b/configpp.hpp
new file mode 100644
index 0000000..90038af
--- /dev/null
+++ b/configpp.hpp
@@ -0,0 +1,94 @@
+#pragma once
+
+#include <boost/property_tree/ptree.hpp>
+#include <boost/hana.hpp>
+
+#include <memory>
+#include <type_traits>
+
+struct X {
+	int a;
+	int b;
+};
+
+BOOST_HANA_ADAPT_STRUCT(X, a, b);
+
+struct X2 {
+	int a;
+	int b;
+};
+
+namespace configpp {
+	
+	struct ConfigStructure{};
+	
+	class Config {
+		Config(std::string subdir, std::string filename = "config.json");
+		
+		boost::property_tree::ptree config;
+		std::string subdir;
+		std::string filename;
+		
+		static std::unique_ptr<Config> config_ptr;
+		
+		void set(std::string const& key, std::string const& value, boost::property_tree::ptree& base) const {
+			base.put(key, value);
+		}
+		
+	public:
+		
+		Config() = delete;
+		Config(Config const&) = delete;
+		Config(Config&&) = delete;
+		Config& operator=(Config const&) = delete;
+		Config& operator=(Config&&) = delete;
+		
+		~Config();
+		
+		static Config& get(std::string subdir, std::string filename = "config.json") {
+			if(!config_ptr) {
+				config_ptr.reset(new Config(subdir, filename));
+			}
+			return *config_ptr;
+		}
+		
+		void set(std::string const& key, std::string const& value) {
+			set(key, value, config);
+		}
+		
+		template <typename T, typename std::enable_if<std::is_arithmetic<T>::value>::type* = nullptr> 
+		void set(std::string const & key, T const& value) {
+			std::ostringstream oss;
+			oss << value;
+		
+			set(key, oss.str());
+		}
+		
+		template <typename T, typename std::enable_if<boost::hana::Struct<T>::value>::type* = nullptr> 
+		void set(std::string const& key, T const& value) {
+			auto top_element = config.get_child_optional(key);
+	
+			if(!top_element) {
+				boost::property_tree::ptree array;
+				config.add_child(key, array);
+				top_element = config.get_child(key);
+			}
+			
+			boost::hana::for_each(value, boost::hana::fuse([&top_element, this](auto&& key, auto&& value) {
+				std::ostringstream oss;
+				oss << value;
+				
+				set(boost::hana::to<const char*>(key), oss.str(), *top_element);
+			}));
+		}
+		
+		template <typename T>
+		void get(std::string key, T const& value) {
+			
+		}
+		
+	};
+	
+} //namespace configpp
+
+//configpp::Config& config = configpp::Config::get({});