Zed's debug macros in color

dbg.h

#ifndef __dbg_h__
#define __dbg_h

#include <stdio.h>
#include <errno.h>
#include <string.h>

#define ANSI_COLOR_RED     "\x1b[31m"
#define ANSI_COLOR_GREEN   "\x1b[32m"
#define ANSI_COLOR_YELLOW  "\x1b[33m"
#define ANSI_COLOR_CYAN    "\x1b[36m"
#define ANSI_COLOR_RESET   "\x1b[0m"

#ifdef NDEBUG
#define debug(M, ...)
#else
#define debug(M, ...) fprintf(stderr, ANSI_COLOR_CYAN "[DEBUG]" ANSI_COLOR_RESET " %s:%d:%s: " M "\n", __FILE__, __LINE__, __FUNCTION__, ##__VA_ARGS__)
#endif

#define clean_errno() (errno == 0 ? "None" : strerror(errno))

#define log_err(M, ...) fprintf(stderr, ANSI_COLOR_RED "[ERROR]" ANSI_COLOR_RESET " (%s:%d: errno: %s) " M "\n", __FILE__, __LINE__, clean_errno(), ##__VA_ARGS__)

#define log_warn(M, ...) fprintf(stderr, ANSI_COLOR_YELLOW "[WARN]" ANSI_COLOR_RESET " (%s:%d: errno: %s) " M "\n", __FILE__, __LINE__, clean_errno(), ##__VA_ARGS__)

#define log_info(M, ...) fprintf(stderr, ANSI_COLOR_GREEN "[INFO]" ANSI_COLOR_RESET " (%s:%d) " M "\n", __FILE__, __LINE__, ##__VA_ARGS__)

#define check(A, M, ...) if (!(A)) { log_err(M, ##__VA_ARGS__); errno=0; goto error; }

#define sentinel(M, ...) { log_err(M, ##__VA_ARGS__); errno=0; goto error; }

#define check_mem(A) check((A), "Out of memory.")

#define check_debug(A, M, ...) if (!(A)) { debug(M, ##__VA_ARGS__); errno=0; goto error; }

#endif