Problems with terminal Settings

[Mq-b]

I want to know how I can easily set up the global terminal of spdlog? I wanted to have color and the terminal associated with the file, and I tried to do that, but I couldn't.

#include <spdlog/spdlog.h>
#include <spdlog/sinks/stdout_color_sinks.h>
#include <spdlog/sinks/basic_file_sink.h>

void setupLogging() {
    auto file_logger = spdlog::basic_logger_mt("file_logger", "logs.txt");
    file_logger->set_level(spdlog::level::info);

    auto console_logger = spdlog::stdout_color_mt("console");
    console_logger->set_level(spdlog::level::info);

    file_logger->set_pattern("[%Y-%m-%d %H:%M:%S] [%l] %v");
    console_logger->set_pattern("%^[%Y-%m-%d %H:%M:%S] [%l] %v%$");
    
    spdlog::set_default_logger(console_logger);
}

int main() {
    setupLogging();

    spdlog::info("这是信息日志");
    spdlog::warn("这是警告日志");
    spdlog::error("这是错误日志");
}

[Mq-b]

void setupLogging() {
    auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs.txt", true);
    file_sink->set_level(spdlog::level::info);
    file_sink->set_pattern("[%Y-%m-%d %H:%M:%S] [%l] %v");

    auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
    console_sink->set_level(spdlog::level::info);
    console_sink->set_pattern("%^[%Y-%m-%d %H:%M:%S] [%l] %v%$");

    auto logger = std::make_shared<spdlog::logger>("multi_sink", spdlog::sinks_init_list{file_sink, console_sink});
    spdlog::register_logger(logger);

    spdlog::set_default_logger(logger);
}

I think I got it. Thank you.

[Mq-b]

I have another question, how do I get it to show the file, function, line number or even thread it's in?
I've tested simple modification format strings and it doesn't work.

[Mq-b]

#include <spdlog/spdlog.h>
#include <spdlog/sinks/stdout_color_sinks.h>
#include <spdlog/sinks/basic_file_sink.h>

void setupLogging() {
    auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs.txt", true);
    file_sink->set_level(spdlog::level::debug);
    file_sink->set_pattern("[%Y-%m-%d %H:%M:%S] [%@] [%!] [%o] [%l] %v");

    auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
    console_sink->set_level(spdlog::level::debug);
    console_sink->set_pattern("%^[%Y-%m-%d %H:%M:%S] [%@] [%!] [%o] [%l] %v%$");

    auto logger = std::make_shared<spdlog::logger>("multi_sink", spdlog::sinks_init_list{file_sink, console_sink});
    spdlog::register_logger(logger);

    spdlog::set_default_logger(logger);
}

int main() {
    setupLogging();
    spdlog::info("INFO");
    spdlog::warn("WRAN");
    spdlog::error("ERROR");
}

Complier Explorer

output：

[2024-10-28 13:58:59] [] [] [0] [info] INFO
[2024-10-28 13:58:59] [] [] [0] [warning] WRAN
[2024-10-28 13:58:59] [] [] [0] [error] ERROR

I know you could probably use a macro like SPDLOG_LOGGER_INFO to have this information in the output file.
But what I want is a simple, output terminal and output to a file that contains my information.

[tt4g]

If you really do not want to use macros, you have to write your own code equivalent to macros.

spdlog/include/spdlog/spdlog.h

Lines 286 to 346 in ee16895

	#ifndef SPDLOG_NO_SOURCE_LOC
	#define SPDLOG_LOGGER_CALL(logger, level, ...) \
	(logger)->log(spdlog::source_loc{__FILE__, __LINE__, SPDLOG_FUNCTION}, level, __VA_ARGS__)
	#else
	#define SPDLOG_LOGGER_CALL(logger, level, ...) \
	(logger)->log(spdlog::source_loc{}, level, __VA_ARGS__)
	#endif
	#if SPDLOG_ACTIVE_LEVEL <= SPDLOG_LEVEL_TRACE
	#define SPDLOG_LOGGER_TRACE(logger, ...) \
	SPDLOG_LOGGER_CALL(logger, spdlog::level::trace, __VA_ARGS__)
	#define SPDLOG_TRACE(...) SPDLOG_LOGGER_TRACE(spdlog::default_logger_raw(), __VA_ARGS__)
	#else
	#define SPDLOG_LOGGER_TRACE(logger, ...) (void)0
	#define SPDLOG_TRACE(...) (void)0
	#endif
	#if SPDLOG_ACTIVE_LEVEL <= SPDLOG_LEVEL_DEBUG
	#define SPDLOG_LOGGER_DEBUG(logger, ...) \
	SPDLOG_LOGGER_CALL(logger, spdlog::level::debug, __VA_ARGS__)
	#define SPDLOG_DEBUG(...) SPDLOG_LOGGER_DEBUG(spdlog::default_logger_raw(), __VA_ARGS__)
	#else
	#define SPDLOG_LOGGER_DEBUG(logger, ...) (void)0
	#define SPDLOG_DEBUG(...) (void)0
	#endif
	#if SPDLOG_ACTIVE_LEVEL <= SPDLOG_LEVEL_INFO
	#define SPDLOG_LOGGER_INFO(logger, ...) \
	SPDLOG_LOGGER_CALL(logger, spdlog::level::info, __VA_ARGS__)
	#define SPDLOG_INFO(...) SPDLOG_LOGGER_INFO(spdlog::default_logger_raw(), __VA_ARGS__)
	#else
	#define SPDLOG_LOGGER_INFO(logger, ...) (void)0
	#define SPDLOG_INFO(...) (void)0
	#endif
	#if SPDLOG_ACTIVE_LEVEL <= SPDLOG_LEVEL_WARN
	#define SPDLOG_LOGGER_WARN(logger, ...) \
	SPDLOG_LOGGER_CALL(logger, spdlog::level::warn, __VA_ARGS__)
	#define SPDLOG_WARN(...) SPDLOG_LOGGER_WARN(spdlog::default_logger_raw(), __VA_ARGS__)
	#else
	#define SPDLOG_LOGGER_WARN(logger, ...) (void)0
	#define SPDLOG_WARN(...) (void)0
	#endif
	#if SPDLOG_ACTIVE_LEVEL <= SPDLOG_LEVEL_ERROR
	#define SPDLOG_LOGGER_ERROR(logger, ...) \
	SPDLOG_LOGGER_CALL(logger, spdlog::level::err, __VA_ARGS__)
	#define SPDLOG_ERROR(...) SPDLOG_LOGGER_ERROR(spdlog::default_logger_raw(), __VA_ARGS__)
	#else
	#define SPDLOG_LOGGER_ERROR(logger, ...) (void)0
	#define SPDLOG_ERROR(...) (void)0
	#endif
	#if SPDLOG_ACTIVE_LEVEL <= SPDLOG_LEVEL_CRITICAL
	#define SPDLOG_LOGGER_CRITICAL(logger, ...) \
	SPDLOG_LOGGER_CALL(logger, spdlog::level::critical, __VA_ARGS__)
	#define SPDLOG_CRITICAL(...) SPDLOG_LOGGER_CRITICAL(spdlog::default_logger_raw(), __VA_ARGS__)
	#else
	#define SPDLOG_LOGGER_CRITICAL(logger, ...) (void)0
	#define SPDLOG_CRITICAL(...) (void)0
	#endif

[Mq-b]

If you use std::source_location?

[tt4g]

PRs here: #2667 #2973 #2979
But not merged (std::source_location support is not planned).

See: #2979 (comment)

Thanks. However, Like I already mentioned, I prefer not to deal with std::source_location in branch 1.x.
As a side note, I think passing const ref might be less performant than passing by value as this is small constpexr struct.