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[utils] logging

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Al
2015-03-03 12:38:10 -05:00
parent 09552906d3
commit 087328c321
1 changed files with 62 additions and 0 deletions
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62
src/log/log.h Normal file
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#ifndef LOG_H
#define LOG_H
#include <stdio.h>
#include <errno.h>
#include <string.h>
#define LOG_LEVEL_DEBUG 10
#define LOG_LEVEL_INFO 20
#define LOG_LEVEL_WARN 30
#define LOG_LEVEL_ERROR 40
#ifndef LOG_LEVEL
#define LOG_LEVEL LOG_LEVEL_INFO
#endif
#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
#if LOG_LEVEL > LOG_LEVEL_DEBUG
#define NO_DEBUG 1
#endif
#ifdef NO_DEBUG
/* compile with all debug messages removed */
#define log_debug(M, ...)
#else
#ifdef LOG_NO_COLORS
#define log_debug(M, ...) fprintf(stderr, "DEBUG " M " at %s (%s:%d) \n", ##__VA_ARGS__, __func__, __FILE__, __LINE__)
#else
#define log_debug(M, ...) fprintf(stderr, "\33[34mDEBUG\33[39m " M " \33[90m at %s (%s:%d) \33[39m\n", ##__VA_ARGS__, __func__, __FILE__, __LINE__)
#endif /* NOCOLORS */
#endif /* NDEBUG */
/* safe readable version of errno */
#define clean_errno() (errno == 0 ? "None" : strerror(errno))
#ifdef LOG_NO_COLORS
#define log_error(M, ...) fprintf(stderr, "ERR " M " at %s (%s:%d) errno:%s\n", ##__VA_ARGS__, __func__, __FILE__, __LINE__, clean_errno())
#define log_warn(M, ...) fprintf(stderr, "WARN " M " at %s (%s:%d) errno:%s\n", ##__VA_ARGS__, __func__, __FILE__, __LINE__, clean_errno())
#define log_info(M, ...) fprintf(stderr, "INFO " M " at %s (%s:%d)\n", ##__VA_ARGS__, __func__, __FILENAME__, __LINE__)
#else
#define log_error(M, ...) fprintf(stderr, "\33[31mERR\33[39m " M " \33[90m at %s (%s:%d) \33[94merrno: %s\33[39m\n", ##__VA_ARGS__, __func__, __FILE__, __LINE__, clean_errno())
#define log_warn(M, ...) fprintf(stderr, "\33[91mWARN\33[39m " M " \33[90m at %s (%s:%d) \33[94merrno: %s\33[39m\n", ##__VA_ARGS__, __func__, __FILE__, __LINE__, clean_errno())
#define log_info(M, ...) fprintf(stderr, "\33[32mINFO\33[39m " M " \33[90m at %s (%s:%d) \33[39m\n", ##__VA_ARGS__, __func__, __FILENAME__, __LINE__)
#endif /* NOCOLORS */
#if LOG_LEVEL > LOG_LEVEL_INFO
#undef log_info
#define log_info(M, ...)
#endif
#if LOG_LEVEL > LOG_LEVEL_WARN
#undef log_warn
#define log_warn(M, ...)
#endif
#if LOG_LEVEL > LOG_LEVEL_ERROR
#undef log_error
#define log_error(M, ...)
#endif
#endif