#ifndef COMMON_H
#define COMMON_H

#include
#include
#include

// Terminology according to
// https://en.wikipedia.org/wiki/ANSI_escape_code#Sequence_elements
#define ESC “\033”
#define CSI ESC “[”

#define CYAN CSI”1;36m”
#define GREEN CSI”0;32m”
#define RED CSI”1;31m”
#define ORANGE CSI”1;33m”
#define MAGENTA CSI”1;35m”
#define NORMAL CSI”0m”

#define STR(x) #x

static inline const char *timestamp(char *s, size_t max)
{
time_t t = time(NULL);
struct tm tm;
gmtime_r(&t, &tm);
strftime(s, max, “%T”, &tm);
return s;
}

/**
* @brief 报告系统错误，并退出程序
* @param msg 传递给 perror 的消息字符串
*/
#define sys_panic(msg) \
do { \
perror(RED msg NORMAL); \
exit(EXIT_FAILURE); \
} while (0)

#define panic(fmt, …) \
do { \
char __s[32]; \
fprintf(stderr, RED “[%s,%s:%d] ” fmt NORMAL “\n”, \
timestamp(__s, sizeof(__s)), __FUNCTION__, __LINE__, ## __VA_ARGS__); \
exit(EXIT_FAILURE); \
} while (0)

#define log(fmt, …) \
do { \
char __s[32]; \
fprintf(stderr, GREEN “[%s,%s:%d] ” NORMAL fmt “\n”, \
timestamp(__s, sizeof(__s)), __FUNCTION__, __LINE__, ## __VA_ARGS__); \
} while (0)

#define warn(fmt, …) \
do { \
char __s[32]; \
fprintf(stderr, RED “[%s,%s:%d] ” NORMAL fmt “\n”, \
timestamp(__s, sizeof(__s)), __FUNCTION__, __LINE__, ## __VA_ARGS__); \
} while (0)

#define Assert(expr, fmt, …) \
do { \
if (!(expr)) { \
panic(“\”” STR(expr) “\”” ” failed: ” fmt, ## __VA_ARGS__); \
} \
} while (0)

#endif // COMMON_H