Put everything back.

ctrtool/deps/libtoolchain/include/tc/os/UnicodeMain.h

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+	/**
+	 * @file UnicodeMain.h
+	 * @brief Declaration of unicode entry point (umain())
+	 * @author Jack (jakcron)
+	 * @version 0.1
+	 * @date 2020/04/13
+	 * @details
+	 * Including UnicodeMain.h bootstraps @ref umain() by defining the platform specific unicode entry point.
+	 * 
+	 * You must define @ref umain() as your entry point if you include this header. Compiler errors will occur if you define any other entrypoints or do not define @ref umain().
+	 **/
+#include <string>
+#include <vector>
+#ifdef _WIN32
+#include <wchar.h>
+#endif
+#include <tc/string/TranscodeUtil.h>
+
+#include <iostream>
+
+	/**
+	 * @brief Multi-platform UTF-8 entry point.
+	 * 
+	 * @param[in] args vector of UTF-8 encoded command-line arguments.
+	 * @param[in] env vector of UTF-8 encoded environment variables.
+	 * 
+	 * @details
+	 * You must define this function, it replaces using regular entry points like main, wmain, tmain, etc...
+	 */
+int umain(const std::vector<std::string>& args, const std::vector<std::string>& env);
+
+#ifdef _WIN32
+	/**
+	 * @brief Native unicode entry point is defined here and bootstraps @ref umain().
+	 * @warning Do not call or define this function
+	 */
+int wmain(int argc, wchar_t* argv[], wchar_t* envp[])
+#else
+	/**
+	 * @brief Native unicode entry point is defined here and bootstraps @ref umain().
+	 * @warning Do not call or define this function
+	 */
+int main(int argc, char* argv[], char* envp[])
+#endif
+{
+	std::vector<std::string> args;
+	for (size_t i = 0; i < (size_t)argc; i++)
+	{
+#ifdef _WIN32
+		std::string u8_arg;
+		tc::string::TranscodeUtil::UTF16ToUTF8(std::u16string((char16_t*)argv[i]), u8_arg);
+		args.push_back(u8_arg);
+#else
+		args.push_back(argv[i]);
+#endif
+	}
+
+	std::vector<std::string> env;
+	for (; *envp != nullptr; envp++)
+	{
+#ifdef _WIN32
+		std::string u8_env;
+		tc::string::TranscodeUtil::UTF16ToUTF8(std::u16string((char16_t*)*envp), u8_env);
+		env.push_back(u8_env);
+#else
+		env.push_back(std::string(*envp));
+#endif
+	}
+
+	return umain(args, env);
+}