//
// main.cpp
// valid-utf8
//
// Created by Bob Polis at 2019-09-21
// Copyright (c) 2019 SwiftCoder. All rights reserved.
//

// libcommon
#include <libscstring.hpp>

// UNIX
#include <unistd.h>
#include <libgen.h>

// C++
#include <iostream>
using namespace std;

int main(int argc, const char * argv[]) {
    int result = EXIT_SUCCESS;
    try {
        string text;
		if (argc == 1) {
			cin >> text;
		} else {
			text = sc::file_get_contents(argv[1]);
		}
		result = sc::is_valid_utf8(text) ? EXIT_SUCCESS : EXIT_FAILURE;
    } catch (const exception& ex) {
        cerr << basename(const_cast<char*>(argv[0])) << ": " << ex.what() << '\n';
        result = EXIT_FAILURE;
    }
    return result;
}