From 2790590996da2f6a0f4d59570de62078a5ac8ae2 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Mon, 5 Feb 2024 17:39:28 +0100
Subject: tools: Move to new module structure and moving to more schema based
 generation to convert more easily to json

---
 modules/tools/c++/cli_analyzer.hpp | 183 +++++++++++++++++++++++++++++++++++++
 1 file changed, 183 insertions(+)
 create mode 100644 modules/tools/c++/cli_analyzer.hpp

(limited to 'modules/tools/c++/cli_analyzer.hpp')

diff --git a/modules/tools/c++/cli_analyzer.hpp b/modules/tools/c++/cli_analyzer.hpp
new file mode 100644
index 0000000..402f03c
--- /dev/null
+++ b/modules/tools/c++/cli_analyzer.hpp
@@ -0,0 +1,183 @@
+#pragma once
+
+#include <forstio/codec/schema.hpp>
+
+#include <iostream>
+
+namespace saw {
+namespace impl {
+struct cli_mode {
+	struct read {};
+	struct write {};
+};
+
+template<typename T, typename Encoding>
+struct cli_traverser {
+	static_assert(always_false<T,Encoding>, "Not supported");
+};
+
+template<typename Schema, typename Encoding>
+struct cli_modifier {
+	codec<Schema, encode::Json> json;
+	codec<Schema, Encoding> encoded;
+
+	error_or<void> read(
+					std::deque<std::string>& sch_path,
+					data<Schema, Encoding>& enc_data, 
+					std::string& json_data_str
+					){
+		data<Schema, encode::Native> native;
+		if constexpr ( std::is_same_v<Encoding, encode::Native> ){
+			auto eov = encoded.decode<encode::Native>(enc_data, native);
+			if(eov.is_error()){
+				return eov;
+			}
+		}else{
+				native = enc_data;
+		}
+		{
+			data<Schema, encode::Json> json_data;
+			auto eov = json.encode<encode::Native>(native, json_data);
+			if(eov.is_error()){
+				return eov;
+			}
+
+			json_data_str = convert_to_string(json_data.get_buffer());
+
+			std::cout<<json_data_str<<std::endl;
+		}
+
+		return void_t{};
+	}
+	
+	error_or<void> write(
+					std::deque<std::string>& sch_path,
+					data<Schema, Encoding>& enc_data,
+					std::string& json_data_str
+					){
+		data<Schema, encode::Native> native;
+		{
+			/// @todo string to data
+			data<Schema, encode::Json> json_data{ std::string_view{json_data_str} };
+			auto eov = json.decode<encode::Native>(json_data, native);
+			if(eov.is_error()){
+				return eov;
+			}
+		}
+		if constexpr (std::is_same_v<Encoding, encode::Native> ){
+			auto eov = encoded.encode<encode::Native>(native, enc_data);
+			if(eov.is_error()){
+				return eov;
+			}
+		}else{
+				enc_data = native;
+		}
+
+		return void_t{};
+	}
+};
+
+template<typename... T, typename Encoding>
+struct cli_traverser<schema::Tuple<T...>, Encoding> {
+		using Schema = schema::Tuple<T...>;
+
+		template<typename Traversal, size_t i>
+		static error_or<void> traverse_member(std::deque<std::string>& sch_path, data<Schema, Encoding>& enc_data, std::string& json_data){
+				using Type = typename parameter_pack_type<i,T...>::type;
+
+				std::string num_str = std::to_string(i);
+				if( num_str == sch_path.front() ){
+						sch_path.pop_front();
+						return cli_traverser<Type, Encoding>::traverse<Traversal>(sch_path, enc_data.template get<i>(), json_data);
+				}
+
+				if ( (i+1) < sizeof...(T)){
+						return traverse_member<Traversal, i+1>(sch_path, enc_data, json_data);
+				}
+			return make_error<err::invalid_state>("Didn't find tuple path element");
+		}
+};
+
+/**
+ * Traverse the path until we hit the end of the provided path
+ */
+template<typename... T, string_literal... Lits, typename Encoding>
+struct cli_traverser<schema::Struct<schema::Member<T,Lits>...>, Encoding> {
+	using Schema = schema::Struct<schema::Member<T,Lits>...>;
+
+	template<typename Traversal, size_t i>
+    static error_or<void> traverse_member(std::deque<std::string>& sch_path, data<Schema,Encoding>& enc_data, std::string& json_data){
+			using Type = typename parameter_pack_type<i,T...>::type;
+		    constexpr string_literal Literal = parameter_key_pack_type<i, Lits...>::literal;
+
+			if ( Literal.view() == sch_path.front() ){
+				sch_path.pop_front();
+				return cli_traverser<Type>::traverse<Traversal>(sch_path, enc_data.template get<Literal>(), json_data);
+			}
+
+			if constexpr ( (i+1) < sizeof...(T) ) {
+				return traverse_member<Traversal, i+1>(sch_path, enc_data, json_data);
+			}
+			return make_error<err::invalid_state>("Didn't find struct path element");
+	}
+
+	template<typename Traversal>
+	static error_or<void> traverse(std::deque<std::string>& sch_path, data<Schema,Encoding>& enc_data, std::string& json_data){
+		/**
+		 * If our path is empty, then we have reached the desired destination.
+		 */
+		if(sch_path.empty()){
+		    /**
+			 * Decide during this step if we are reading or not
+			 */
+			cli_modifier<Schema, Encoding> mod;
+			if constexpr (std::is_same_v<Traversal, cli_mode::read>){
+				return mod.read(sch_path, json_data);
+			} else if constexpr (std::is_same_v<Traversal, cli_mode::write>) {
+				return mod.write(sch_path, json_data);
+			} else {
+				return make_error<err::invalid_state>("We only support cli_mode::read and cli_mode::write");
+			}
+		} else {
+				if constexpr ( sizeof...(T) > 0 ){
+						return traverse_member<Traversal, 0>(sch_path, json_data);
+				}
+				return make_error<err::invalid_state>("No elements in struct while path isn't empty");
+		}
+
+		return void_t{};
+	}
+};
+}
+
+struct parsed_args {
+		bool read_mode = true;
+		std::string file_path;
+		std::deque<std::string> sch_path;
+};
+
+template<typename Schema, typename Encoding>
+int modify_data_on_cli(bool read_mode, const std::string& file_path, std::deque<std::string> sch_path, std::string& json_data){
+    /**
+	 * Read data from file
+	 */
+	
+
+		data<Schema, Encoding> data;
+	data<Schema, encode::Native> native_data;
+
+	if (read_mode) {
+		auto eov = impl::cli_modifier<Schema, encode::Native>::traverse<impl::cli_mode::read>(sch_path, native_data, json_data);
+		if(eov.is_error()){
+			return -1;
+		}
+	} else {
+		auto eov = impl::cli_modifier<Schema, encode::Native>::traverse<impl::cli_mode::write>(sch_path, native_data, json_data);
+		if(eov.is_error()){
+			return -1;
+		}
+	}
+
+	return 0;
+}
+}
-- 
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