//
// Copyright (c) 2019-2025 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#include <boost/mysql/character_set.hpp>

#include <boost/mysql/impl/internal/call_next_char.hpp>

#include <cstddef>
#include <stdint.h>

using namespace boost::mysql;

static bool iterate_utf8mb4_string(const uint8_t* data, size_t size) noexcept
{
    const char* it = reinterpret_cast<const char*>(data);
    const char* last = it + size;

    while (it < last)
    {
        std::size_t char_len = detail::call_next_char(utf8mb4_charset, it, last);
        if (char_len == 0u)
            return false;  // Invalid character
        it += char_len;
    }

    return true;
}

extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
{
    // Note: this code should never throw exceptions, for any kind of input
    iterate_utf8mb4_string(data, size);
    return 0;
}