logger_sample.cpp

Demonstrates logger initialization, file/console targets, and Unicode output (Korean, Chinese, Japanese) through both narrow and wide string logging APIs.

See also

log_module

// BSD 3-Clause License
// Copyright (c) 2024, 🍀☀🌕🌥 🌊
// See the LICENSE file in the project root for full license information.
 
#include <iostream>
#include <chrono>
#include <thread>
 
#include "logger/core/logger.h"
#include <kcenon/thread/utils/formatter.h>
 
using kcenon::thread::utils::formatter;
 
bool use_backup_ = false;
uint32_t max_lines_ = 0;
uint16_t wait_interval_ = 100;
uint32_t test_line_count_ = 10000;
log_module::log_types file_target_ = log_module::log_types::Sequence;
log_module::log_types console_target_ = log_module::log_types::Sequence;
log_module::log_types callback_target_ = log_module::log_types::None;
 
auto initialize_logger() -> std::optional<std::string>
{
    log_module::set_title("logger_sample");
    log_module::set_use_backup(use_backup_);
    log_module::set_max_lines(max_lines_);
    log_module::file_target(file_target_);
    log_module::console_target(console_target_);
    log_module::callback_target(callback_target_);
    log_module::message_callback(
        [](const log_module::log_types& type, const std::string& datetime,
           const std::string& message)
        { std::cout << formatter::format("[{}][{}] {}\n", datetime, type, message); });
    if (wait_interval_ > 0)
    {
        log_module::set_wake_interval(std::chrono::milliseconds(wait_interval_));
    }
 
    return log_module::start();
}
 
auto main() -> int
{
    auto error_message = initialize_logger();
    if (error_message.has_value())
    {
        std::cerr << formatter::format("error starting logger: {}\n",
                                       error_message.value_or("unknown error"));
        return 0;
    }
 
    for (auto index = 0; index < test_line_count_; ++index)
    {
        log_module::write_debug("안녕, World!: {}", index);
        log_module::write_debug("테스트 #{} - Hello, 世界!", index);
        log_module::write_debug("警告 {}: こんにちは", index);
 
        log_module::write_sequence(L"안녕, World!: {}", index);
        log_module::write_sequence(L"테스트 #{} - Hello, 世界!", index);
        log_module::write_sequence(L"警告 {}: こんにちは", index);
 
        log_module::write_parameter("복합 테스트 - 값: {}, 이름: {}", index, "홍길동");
        log_module::write_parameter(L"복합 테스트 - 값: {}, 이름: {}", index, L"홍길동");
 
        log_module::write_information("여러 줄 테스트:\n  라인 1: {}\n  라인 2: {}\n  라인 3: {}",
                                      "안녕하세요", "Hello, World", "こんにちは");
        log_module::write_information(L"여러 줄 테스트:\n  라인 1: {}\n  라인 2: {}\n  라인 3: {}",
                                      L"안녕하세요", L"Hello, World", L"こんにちは");
    }
 
    log_module::stop();
 
    return 0;
}