feat: add basic program stuff

1 files changed, 108 insertions, 0 deletions

diff --git a/src/game_of_life.cpp b/src/game_of_life.cpp
index e69de29..32d393e 100644
--- a/src/game_of_life.cpp
+++ b/src/game_of_life.cpp
@@ -0,0 +1,108 @@
+#include "conversion.hpp"
+#include "game/options.hpp"
+#include "randomization.hpp"
+
+#include <getopt.h>
+#include <iostream>
+#include <memory>
+#include <string_view>
+#include <vector>
+
+namespace
+{
+void optarg_error(char arg, const std::string_view &error)
+{
+	std::cout << "Error: Invalid option argument for -" << arg << ". " << error
+			  << std::endl;
+	exit(EXIT_FAILURE);
+}
+
+/**
+ * Returns the current optarg as a string view.
+ */
+std::string_view get_str_optarg()
+{
+	return std::string_view(optarg);
+}
+
+/**
+ * Returns the current optarg as a unsigned integer.
+ *
+ * @param arg The current command-line argument character
+ * @param check_zero Whether or not to make sure that the result is not zero
+ */
+unsigned int get_uint_optarg(char arg, bool check_zero = false)
+{
+	unsigned int num = 0;
+
+	try
+	{
+		num = str_to_uint(get_str_optarg());
+
+		if (check_zero && num == 0)
+		{
+			throw "It should not be 0";
+		}
+	}
+	catch (const char *error)
+	{
+		optarg_error(arg, std::string_view(error));
+	}
+
+	return num;
+}
+} // namespace
+
+constexpr std::array<option, 8> options = {
+	option({"seed", required_argument, nullptr, 's'}),
+	option({"help", no_argument, nullptr, 0}), option({nullptr, 0, nullptr, 0})};
+
+int main(int argc, char *argv[])
+{
+	auto args = std::vector<std::string_view>(argv, argv + argc);
+
+	GameOptions game_options;
+
+	char arg = 0;
+	while ((arg = static_cast<char>(
+				getopt_long(argc, argv, "s:", options.data(), nullptr))) != -1)
+	{
+		switch (arg)
+		{
+		case 's':
+		{
+			auto seed = get_uint_optarg(arg, true);
+
+			game_options.random_gen = std::make_shared<RandomNumberGenerator>(seed);
+			break;
+		}
+		case 0:
+		{
+			std::cout << "Usage: " << args[0]
+					  << " [OPTION]...\n\n"
+						 "Options:\n"
+					  << "  -s, --seed SEED         The randomization seed used\n"
+						 "      --help              Displays usage information"
+					  << std::endl;
+			return EXIT_SUCCESS;
+		}
+		case '?':
+		{
+			std::cout << "\nTry '" << args[0] << " --help' for more information"
+					  << std::endl;
+			return EXIT_FAILURE;
+		}
+		default:
+			abort();
+		}
+	}
+
+	if (game_options.random_gen == nullptr)
+	{
+		game_options.random_gen = std::make_shared<RandomNumberGenerator>();
+	}
+
+	// auto game = Game(game_options);
+
+	// game.run();
+}