clog.h

#pragma once

#include <stdarg.h>
#include <stdlib.h>
#include <inttypes.h>

#define CLOG_NONE 0
#define CLOG_FATAL 1
#define CLOG_ERROR 2
#define CLOG_WARNING 3
#define CLOG_INFO 4
#define CLOG_DEBUG 5

#ifndef CLOG_VISIBILITY
	#if defined(__GNUC__)
	// ld.lld: error: undefined hidden symbol: clog_vlog_error
	// referenced by log.h:16 (external/cpuinfo/src/cpuinfo/log.h)
		#define CLOG_VISIBILITY
	#elif defined(__ELF__)
		#define CLOG_VISIBILITY __attribute__((__visibility__("internal")))
	#elif defined(__MACH__)
		#define CLOG_VISIBILITY __attribute__((__visibility__("hidden")))
	#else
		#define CLOG_VISIBILITY
	#endif
#endif

#ifndef CLOG_ARGUMENTS_FORMAT
	#if defined(__GNUC__)
		#define CLOG_ARGUMENTS_FORMAT __attribute__((__format__(__printf__, 1, 2)))
	#else
		#define CLOG_ARGUMENTS_FORMAT
	#endif
#endif

#ifdef __cplusplus
extern "C" {
#endif

CLOG_VISIBILITY void clog_vlog_debug(const char* module, const char* format, va_list args);
CLOG_VISIBILITY void clog_vlog_info(const char* module, const char* format, va_list args);
CLOG_VISIBILITY void clog_vlog_warning(const char* module, const char* format, va_list args);
CLOG_VISIBILITY void clog_vlog_error(const char* module, const char* format, va_list args);
CLOG_VISIBILITY void clog_vlog_fatal(const char* module, const char* format, va_list args);

#define CLOG_DEFINE_LOG_DEBUG(log_debug_function_name, module, level) \
	CLOG_ARGUMENTS_FORMAT \
	inline static void log_debug_function_name(const char* format, ...) { \
		if (level >= CLOG_DEBUG) { \
			va_list args; \
			va_start(args, format); \
			clog_vlog_debug(module, format, args); \
			va_end(args); \
		} \
	}

#define CLOG_DEFINE_LOG_INFO(log_info_function_name, module, level) \
	CLOG_ARGUMENTS_FORMAT \
	inline static void log_info_function_name(const char* format, ...) { \
		if (level >= CLOG_INFO) { \
			va_list args; \
			va_start(args, format); \
			clog_vlog_info(module, format, args); \
			va_end(args); \
		} \
	}

#define CLOG_DEFINE_LOG_WARNING(log_warning_function_name, module, level) \
	CLOG_ARGUMENTS_FORMAT \
	inline static void log_warning_function_name(const char* format, ...) { \
		if (level >= CLOG_WARNING) { \
			va_list args; \
			va_start(args, format); \
			clog_vlog_warning(module, format, args); \
			va_end(args); \
		} \
	}

#define CLOG_DEFINE_LOG_ERROR(log_error_function_name, module, level) \
	CLOG_ARGUMENTS_FORMAT \
	inline static void log_error_function_name(const char* format, ...) { \
		if (level >= CLOG_ERROR) { \
			va_list args; \
			va_start(args, format); \
			clog_vlog_error(module, format, args); \
			va_end(args); \
		} \
	}

#define CLOG_DEFINE_LOG_FATAL(log_fatal_function_name, module, level) \
	CLOG_ARGUMENTS_FORMAT \
	inline static void log_fatal_function_name(const char* format, ...) { \
		if (level >= CLOG_FATAL) { \
			va_list args; \
			va_start(args, format); \
			clog_vlog_fatal(module, format, args); \
			va_end(args); \
		} \
		abort(); \
	}

#ifdef __cplusplus
} /* extern "C" */
#endif