mbtk/libgsw_lib/gsw_log_interface.h

#ifndef GSW_LOG_INTERFACE_H
#define GSW_LOG_INTERFACE_H

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdarg.h>
#include <dlfcn.h>
#include <syslog.h>

#ifndef LOG_ERR_LEVEL
#define LOG_ERR_LEVEL  3      /* error conditions */
#endif
#ifndef LOG_WARN_LEVEL
#define LOG_WARN_LEVEL 4   /* warning conditions */
#endif
#ifndef LOG_INFO_LEVEL
#define LOG_INFO_LEVEL 6      /* informational */
#endif
#ifndef LOG_DEBUG_LEVEL
#define LOG_DEBUG_LEVEL 7     /* debug-level messages */
#endif
#ifndef LOG_VERBOSE_LEVEL
#define LOG_VERBOSE_LEVEL 8
#endif

typedef void (*mbtk_log)(int level, const char *fmt, ...);

extern mbtk_log gsw_fun_ptr_log;

int init_log_func(void);


#define LOG(level, tag, fmt, args...) \
	do { \
		char *file_ptr_1001 = __FILE__; \
		char *ptr_1001 = file_ptr_1001 + strlen(file_ptr_1001) - 1; \
		char line_1001[10] = {0}; \
		sprintf(line_1001, "%d", __LINE__); \
		while(ptr_1001 >= file_ptr_1001 && *ptr_1001){ \
			if(*ptr_1001 == '/') \
				break; \
			ptr_1001--; \
		} \
		if(0 == init_log_func()) {\
			gsw_fun_ptr_log(level, "%s#%s: %s " fmt, ptr_1001 + 1, line_1001, tag, ##args); \
		} else { \
			printf("%s#%s: [%s] %s " fmt "\n", ptr_1001 + 1, line_1001, #level, tag, ##args); \
		} \
	} while(0)


#define LOGV(tag, fmt, args...)    LOG(LOG_VERBOSE_LEVEL, tag, fmt, ##args)
#define LOGD(tag, fmt, args...)    LOG(LOG_DEBUG_LEVEL, tag, fmt, ##args)
#define LOGI(tag, fmt, args...)    LOG(LOG_INFO_LEVEL, tag, fmt, ##args)
#define LOGW(tag, fmt, args...)    LOG(LOG_WARN_LEVEL, tag, fmt, ##args)
#define LOGE(tag, fmt, args...)    LOG(LOG_ERR_LEVEL, tag, fmt, ##args)

#endif