fix: windows parsing

src/headers/argparse

@@ -8,16 +8,28 @@
 namespace argument_parser {
 	using parser = linux_parser;
 }
+
+namespace argument_parser::v2 {
+	using parser = linux_parser;
+}
 #elif __APPLE__
 #include <macos_parser.hpp>
 namespace argument_parser {
 	using parser = macos_parser;
 }
+
+namespace argument_parser::v2 {
+	using parser = macos_parser;
+}
 #elif _WIN32
 #include <windows_parser.hpp>
 namespace argument_parser {
 	using parser = windows_parser;
 }
+
+namespace argument_parser::v2 {
+	using parser = windows_parser;
+}
 #else
 #error "Unsupported platform"
 #endif

src/headers/parser/argument_parser.hpp

@@ -4,7 +4,6 @@
 #include <type_traits>
 #ifndef ARGUMENT_PARSER_HPP
 #define ARGUMENT_PARSER_HPP
-
 #include <any>
 #include <atomic>
 #include <base_convention.hpp>
@@ -158,8 +157,9 @@ namespace argument_parser {
 			auto id = find_argument_id(arg);
 			if (id.has_value()) {
 				auto value = stored_arguments.find(id.value());
-				if (value != stored_arguments.end() && value->second.has_value())
+				if (value != stored_arguments.end() && value->second.has_value()) {
 					return std::any_cast<T>(value->second);
+				}
 			}
 			return std::nullopt;
 		}

src/headers/parser/parser_v2.hpp

@@ -38,7 +38,7 @@ namespace argument_parser::v2 {
 
 		template <typename T>
 		void add_argument(std::unordered_map<add_argument_flags, typed_flag_value<T>> const &argument_pairs) {
-			add_argument_impl<true, parametered_action<T>>(argument_pairs);
+			add_argument_impl<true, parametered_action<T>, T>(argument_pairs);
 		}
 
 		template <typename T> void add_argument(std::initializer_list<typed_argument_pair<T>> const &pairs) {
@@ -62,7 +62,7 @@ namespace argument_parser::v2 {
 		}
 
 		void add_argument(std::unordered_map<add_argument_flags, non_typed_flag_value> const &argument_pairs) {
-			add_argument_impl<false, non_parametered_action>(argument_pairs);
+			add_argument_impl<false, non_parametered_action, void>(argument_pairs);
 		}
 
 		argument_parser::base_parser &to_v1() {
@@ -91,7 +91,7 @@ namespace argument_parser::v2 {
 		}
 
 	private:
-		template <bool IsTyped, typename ActionType, typename ArgsMap>
+		template <bool IsTyped, typename ActionType, typename T, typename ArgsMap>
 		void add_argument_impl(ArgsMap const &argument_pairs) {
 			std::unordered_map<extended_add_argument_flags, bool> found_params{
 				{extended_add_argument_flags::IsTyped, IsTyped}};
@@ -142,7 +142,7 @@ namespace argument_parser::v2 {
 									   required);
 					break;
 				case candidate_type::store_other:
-					base::add_argument(short_arg, long_arg, help_text, required);
+					base::add_argument<T>(short_arg, long_arg, help_text, required);
 					break;
 				default:
 					throw std::runtime_error("Could not match the arguments against any overload.");

src/main.cpp

@@ -160,9 +160,16 @@ int v1Examples() {
 	return 0;
 }
 
+void run_store_point(argument_parser::base_parser const &parser) {
+	auto point = parser.get_optional<Point>("store-point");
+	if (point) {
+		std::cout << "Point(" << point->x << ", " << point->y << ")" << std::endl;
+	}
+}
+
 int v2Examples() {
 	using namespace argument_parser::v2::flags;
-	argument_parser::v2::base_parser parser;
+	argument_parser::v2::parser parser;
 
 	parser.add_argument<std::string>(
 		{{ShortArgument, "e"}, {LongArgument, "echo"}, {Action, echo}, {HelpText, "echoes given variable"}});
@@ -196,11 +203,17 @@ int v2Examples() {
 	});
 
 	parser.on_complete(::run_grep);
+	parser.on_complete(::run_store_point);
 
 	parser.handle_arguments(conventions);
 	return 0;
 }
 
 int main() {
-	return v2Examples();
+	try {
+		return v2Examples();
+	} catch (std::exception const &e) {
+		std::cerr << "Error: " << e.what() << std::endl;
+		return -1;
+	}
 }

src/source/parser/argument_parser.cpp

@@ -115,7 +115,6 @@ namespace argument_parser {
 
 				try {
 					argument &corresponding_argument = get_argument(extracted);
-
 					if (corresponding_argument.expects_parameter()) {
 						if (convention_type->requires_next_token() && (it + 1) == parsed_arguments.end()) {
 							throw std::runtime_error("expected value for argument " + extracted.second);

src/source/parser/platform_parsers/windows_parser.cpp

@@ -3,26 +3,13 @@
 #include "windows_parser.hpp"
 
 #include <Windows.h>
+#include <iostream>
 #include <memory>
 #include <shellapi.h>
+#include <stdexcept>
 #include <string>
 
-std::string utf8_from_wstring(const std::wstring &w) {
-	if (w.empty())
-		return {};
-	int needed = ::WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, w.c_str(), -1, nullptr, 0, nullptr, nullptr);
-	if (needed <= 0) {
-		throw std::runtime_error("WideCharToMultiByte sizing failed (" + std::to_string(::GetLastError()) + ")");
-	}
-	std::string out;
-	out.resize(static_cast<size_t>(needed - 1));
-	int written =
-		::WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, w.c_str(), -1, out.data(), needed - 1, nullptr, nullptr);
-	if (written <= 0) {
-		throw std::runtime_error("WideCharToMultiByte convert failed (" + std::to_string(::GetLastError()) + ")");
-	}
-	return out;
-}
+using namespace std::string_literals;
 
 struct local_free_deleter {
 	void operator()(void *ptr) const {
@@ -33,28 +20,81 @@ struct local_free_deleter {
 	}
 };
 
-void parse_windows_arguments(std::vector<std::string> &parsed_arguments) {
+std::string windows_error_message(DWORD error_code) {
+	LPSTR messageBuffer = nullptr;
+
+	size_t size = FormatMessageA(
+		FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr,
+		error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), reinterpret_cast<LPSTR>(&messageBuffer), 0, nullptr);
+
+	if (size == 0 || !messageBuffer) {
+		return "Unknown Error ("s + std::to_string(error_code) + ")";
+	}
+
+	std::unique_ptr<char, local_free_deleter> smartBuffer(messageBuffer);
+	std::string result(smartBuffer.get(), size);
+	result.erase(result.find_last_not_of(" \n\r\t") + 1);
+
+	return result;
+}
+
+std::string utf8_from_wstring(const std::wstring &w) {
+	if (w.empty())
+		return {};
+
+	int needed = ::WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, w.c_str(), -1, nullptr, 0, nullptr, nullptr);
+	if (needed <= 0) {
+		throw std::runtime_error("WideCharToMultiByte sizing failed ("s + windows_error_message(::GetLastError()) +
+								 ")");
+	}
+	std::string out;
+	out.resize(needed - 1);
+	int written =
+		::WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, w.c_str(), -1, out.data(), needed, nullptr, nullptr);
+	if (written <= 0) {
+		throw std::runtime_error(
+			"WideCharToMultiByte convert failed, Error("s + windows_error_message(::GetLastError()) + ")" +
+			" Size (Needed): " + std::to_string(needed) + " Size (Written): " + std::to_string(written) +
+			" Size (Allocated): " + std::to_string(out.size()));
+	}
+	return out;
+}
+
+void parse_windows_arguments(std::vector<std::string> &parsed_arguments,
+							 std::function<void(std::string)> const &setProgramName) {
 	int argc_w;
 	std::unique_ptr<LPWSTR[], local_free_deleter> argv_w(CommandLineToArgvW(GetCommandLineW(), &argc_w));
 	if (argv_w == nullptr) {
 		throw std::runtime_error("CommandLineToArgvW failed");
 	}
 
-	for (int i = 0; i < argc_w; i++) {
-		std::string arg = utf8_from_wstring(argv_w[i]);
-		parsed_arguments.emplace_back(arg);
+	if (argc_w <= 0) {
+		return;
+	}
+
+	setProgramName(utf8_from_wstring(argv_w[0]));
+
+	for (int i = 1; i < argc_w; i++) {
+		try {
+			std::string arg = utf8_from_wstring(argv_w[i]);
+			parsed_arguments.emplace_back(arg);
+		} catch (std::runtime_error e) {
+			std::cerr << "Error: " << e.what() << std::endl;
+		}
 	}
 }
 
 namespace argument_parser {
 	windows_parser::windows_parser() {
-		parse_windows_arguments(parsed_arguments);
+		parse_windows_arguments(parsed_arguments,
+								[this](std::string const &program_name) { this->program_name = program_name; });
 	}
 } // namespace argument_parser
 
 namespace argument_parser::v2 {
 	windows_parser::windows_parser() {
-		parse_windows_arguments(ref_parsed_args());
+		parse_windows_arguments(ref_parsed_args(),
+								[this](std::string const &program_name) { this->set_program_name(program_name); });
 	}
 } // namespace argument_parser::v2