spdlog/lite/spdlite.h
2019-03-29 14:46:32 +03:00

291 lines
7.4 KiB
C++

//
// Copyright(c) 2015-present Gabi Melman.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
#pragma once
#include <memory>
#include <string>
#include "spdlog/fmt/fmt.h"
//
// enable/disable log calls at compile time according to global level.
//
// define SPDLITE_ACTIVE_LEVEL to one of those (before including lite.h):
#define SPDLITE_LEVEL_TRACE 0
#define SPDLITE_LEVEL_DEBUG 1
#define SPDLITE_LEVEL_INFO 2
#define SPDLITE_LEVEL_WARN 3
#define SPDLITE_LEVEL_ERROR 4
#define SPDLITE_LEVEL_CRITICAL 5
#define SPDLITE_LEVEL_OFF 6
#define SPDLITE_LOGGER_CALL(logger, level, ...) logger.log(level, __VA_ARGS__)
#if SPDLITE_ACTIVE_LEVEL <= SPDLITE_LEVEL_TRACE
#define SPDLITE_LOGGER_TRACE(logger, ...) SPDLITE_LOGGER_CALL(logger, spdlog::lite::level::trace, __VA_ARGS__)
#define SPDLITE_TRACE(...) SPDLITE_LOGGER_TRACE(spdlog::lite::default_logger(), __VA_ARGS__)
#else
#define SPDLITE_LOGGER_TRACE(logger, ...) (void)0
#define SPDLITE_TRACE(...) (void)0
#endif
#if SPDLITE_ACTIVE_LEVEL <= SPDLITE_LEVEL_DEBUG
#define SPDLITE_LOGGER_DEBUG(logger, ...) SPDLITE_LOGGER_CALL(logger, spdlog::lite::level::debug, __VA_ARGS__)
#define SPDLITE_DEBUG(...) SPDLITE_LOGGER_DEBUG(spdlog::lite::default_logger(), __VA_ARGS__)
#else
#define SPDLITE_LOGGER_DEBUG(logger, ...) (void)0
#define SPDLITE_DEBUG(...) (void)0
#endif
#if SPDLITE_ACTIVE_LEVEL <= SPDLITE_LEVEL_INFO
#define SPDLITE_LOGGER_INFO(logger, ...) SPDLITE_LOGGER_CALL(logger, spdlog::lite::level::info, __VA_ARGS__)
#define SPDLITE_INFO(...) SPDLITE_LOGGER_INFO(spdlog::lite::default_logger(), __VA_ARGS__)
#else
#define SPDLITE_LOGGER_INFO(logger, ...) (void)0
#define SPDLITE_INFO(...) (void)0
#endif
#if SPDLITE_ACTIVE_LEVEL <= SPDLITE_LEVEL_WARN
#define SPDLITE_LOGGER_WARN(logger, ...) SPDLITE_LOGGER_CALL(logger, spdlog::lite::level::warn, __VA_ARGS__)
#define SPDLITE_WARN(...) SPDLITE_LOGGER_WARN(spdlog::lite::default_logger(), __VA_ARGS__)
#else
#define SPDLITE_LOGGER_WARN(logger, ...) (void)0
#define SPDLITE_WARN(...) (void)0
#endif
#if SPDLITE_ACTIVE_LEVEL <= SPDLITE_LEVEL_ERROR
#define SPDLITE_LOGGER_ERROR(logger, ...) SPDLITE_LOGGER_CALL(logger, spdlog::lite::level::err, __VA_ARGS__)
#define SPDLITE_ERROR(...) SPDLITE_LOGGER_ERROR(spdlog::lite::default_logger(), __VA_ARGS__)
#else
#define SPDLITE_LOGGER_ERROR(logger, ...) (void)0
#define SPDLITE_ERROR(...) (void)0
#endif
#if SPDLITE_ACTIVE_LEVEL <= SPDLITE_LEVEL_CRITICAL
#define SPDLITE_LOGGER_CRITICAL(logger, ...) SPDLITE_LOGGER_CALL(logger, spdlog::lite::level::critical, __VA_ARGS__)
#define SPDLITE_CRITICAL(...) SPDLITE_LOGGER_CRITICAL(spdlog::lite::default_logger(), __VA_ARGS__)
#else
#define SPDLITE_LOGGER_CRITICAL(logger, ...) (void)0
#define SPDLITE_CRITICAL(...) (void)0
#endif
namespace spdlog {
class logger;
namespace lite {
// string_view type - either std::string_view or fmt::string_view (pre c++17)
#if defined(FMT_USE_STD_STRING_VIEW)
using string_view_t = std::string_view;
#else
using string_view_t = fmt::string_view;
#endif
enum class level
{
trace = SPDLITE_LEVEL_TRACE,
debug = SPDLITE_LEVEL_DEBUG,
info = SPDLITE_LEVEL_INFO,
warn = SPDLITE_LEVEL_WARN,
err = SPDLITE_LEVEL_ERROR,
critical = SPDLITE_LEVEL_CRITICAL,
off = SPDLITE_LEVEL_OFF
};
class logger
{
public:
logger() = default;
explicit logger(std::shared_ptr<spdlog::logger> impl);
logger(const logger &) = default;
logger(logger &&) = default;
logger &operator=(const logger &) = default;
~logger() = default;
bool should_log(spdlog::lite::level lvl) const noexcept;
template<typename... Args>
void log(spdlog::lite::level lvl, const char *fmt, const Args &... args)
{
if (!should_log(lvl))
{
return;
}
fmt::memory_buffer formatted_buf;
fmt::format_to(formatted_buf, fmt, args...);
log_formatted_(lvl, formatted_buf);
}
// log string view
void log(spdlog::lite::level lvl, const string_view_t &sv);
void log_printf(spdlog::lite::level lvl, const char* format, va_list args);
//
// trace
//
void trace(const char *msg)
{
log(spdlog::lite::level::trace, string_view_t(msg));
}
template<typename... Args>
void trace(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::trace, fmt, args...);
}
void trace_f(const char *printf_format, ...);
//
// debug
//
void debug(const char *msg)
{
log(spdlog::lite::level::debug, string_view_t(msg));
}
template<typename... Args>
void debug(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::debug, fmt, args...);
}
void debug_f(const char *printf_format, ...);
//
// info
//
void info(const char *msg)
{
log(spdlog::lite::level::info, string_view_t(msg));
}
template<typename... Args>
void info(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::info, fmt, args...);
}
void info_f(const char *printf_format, ...);
//
// warn
//
void warn(const char *msg)
{
log(spdlog::lite::level::warn, string_view_t(msg));
}
template<typename... Args>
void warn(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::warn, fmt, args...);
}
void warn_f(const char *printf_format, ...);
//
// error
//
void error(const char *msg)
{
log(spdlog::lite::level::err, string_view_t(msg));
}
template<typename... Args>
void error(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::err, fmt, args...);
}
void error_f(const char *printf_format, ...);
//
// critical
//
void critical(const char *msg)
{
log(spdlog::lite::level::critical, string_view_t(msg));
}
template<typename... Args>
void critical(const char *fmt, const Args &... args)
{
log(spdlog::lite::level::critical, fmt, args...);
}
void critical_f(const char *printf_format, ...);
//
// setters/getters
//
std::string name() const;
void set_level(lite::level level);
lite::level get_level() const;
//
// flush
//
void flush();
void flush_on(spdlog::lite::level log_level);
spdlog::lite::level flush_level() const;
void set_pattern(std::string pattern);
protected:
std::shared_ptr<spdlog::logger> impl_;
void log_formatted_(spdlog::lite::level lvl, const fmt::memory_buffer &formatted);
};
spdlog::lite::logger &default_logger();
template<typename... Args>
void trace(const char *fmt, const Args &... args)
{
default_logger().trace(fmt, args...);
}
template<typename... Args>
void debug(const char *fmt, const Args &... args)
{
default_logger().debug(fmt, args...);
}
template<typename... Args>
void info(const char *fmt, const Args &... args)
{
default_logger().info(fmt, args...);
}
template<typename... Args>
void warn(const char *fmt, const Args &... args)
{
default_logger().warn(fmt, args...);
}
template<typename... Args>
void error(const char *fmt, const Args &... args)
{
default_logger().error(fmt, args...);
}
template<typename... Args>
void critical(const char *fmt, const Args &... args)
{
default_logger().critical(fmt, args...);
}
} // namespace lite
// factory to create lite logger
// implement it in a dedicated compilation unit for fast compiles
spdlog::lite::logger create_lite(void *ctx = nullptr);
} // namespace spdlog