141 lines
3.3 KiB
C
141 lines
3.3 KiB
C
#include "log.h"
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#include <errno.h>
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#include <stdbool.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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static const char* log_level_strings[] = {"DEBUG", "INFO", "WARN", "ERROR"};
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static LogLevel current_log_level = LOG_LEVEL_WARNING;
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static uint32_t current_debug_flags = 0;
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static uint32_t info_flags = 0;
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static bool info_flags_explicit = false;
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static FILE* log_fp = NULL;
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static _Thread_local bool eight_bit_output;
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static LogStderrMode stderr_mode = LOG_STDERR_ERRORS;
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void set_log_level(LogLevel level) {
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current_log_level = level;
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}
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void set_log_debug_flags(uint32_t flags) {
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current_debug_flags = flags;
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}
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uint32_t get_log_debug_flags(void) {
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return current_debug_flags;
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}
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void set_log_info_flags(uint32_t flags) {
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info_flags = flags;
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info_flags_explicit = true;
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}
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uint32_t get_log_info_flags(void) {
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return info_flags;
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}
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void log_set_file(FILE* fp) {
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log_fp = fp;
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}
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void log_set_8_bit_output(bool enabled) {
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eight_bit_output = enabled;
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}
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bool log_get_8_bit_output(void) {
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return eight_bit_output;
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}
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void log_set_stderr_mode(LogStderrMode mode) {
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stderr_mode = mode;
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}
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LogStderrMode log_get_stderr_mode(void) {
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return stderr_mode;
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}
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static inline void write_message(FILE* dest_io, LogLevel log_level, struct tm t, const char* format,
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va_list args) {
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fprintf(dest_io, "%04d-%02d-%02d %02d:%02d:%02d [%s]: ", t.tm_year + 1900, t.tm_mon + 1,
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t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec, log_level_strings[log_level]);
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vfprintf(dest_io, format, args);
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fprintf(dest_io, "\n");
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}
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void log_message(LogLevel log_level, const char* format, ...) {
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if (log_level < current_log_level)
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return;
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if (log_level < 0 || log_level >= (int)(sizeof(log_level_strings) / sizeof(log_level_strings[0])))
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return;
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time_t now = time(NULL);
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struct tm t;
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if (!localtime_r(&now, &t))
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return;
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FILE* dest_io = stdout;
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if (stderr_mode == LOG_STDERR_ALL || log_level == LOG_LEVEL_ERROR) {
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dest_io = stderr;
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}
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va_list args;
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va_start(args, format);
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write_message(dest_io, log_level, t, format, args);
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va_end(args);
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if (log_fp) {
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va_start(args, format);
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write_message(log_fp, log_level, t, format, args);
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va_end(args);
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}
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}
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void log_debug_message(LogDebugFlag flag, const char* format, ...) {
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if (current_log_level > LOG_LEVEL_DEBUG || !(current_debug_flags & flag))
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return;
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time_t now = time(NULL);
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struct tm t;
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if (!localtime_r(&now, &t))
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return;
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va_list args;
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va_start(args, format);
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write_message(stdout, LOG_LEVEL_DEBUG, t, format, args);
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va_end(args);
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if (log_fp) {
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va_start(args, format);
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write_message(log_fp, LOG_LEVEL_DEBUG, t, format, args);
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va_end(args);
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}
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}
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void log_info_message(LogInfoFlag flag, const char* format, ...) {
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if ((info_flags_explicit && (info_flags & flag) == 0) ||
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(!info_flags_explicit && current_log_level > LOG_LEVEL_DEBUG))
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return;
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time_t now = time(NULL);
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struct tm t;
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if (!localtime_r(&now, &t))
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return;
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va_list args;
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va_start(args, format);
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write_message(stdout, LOG_LEVEL_INFO, t, format, args);
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va_end(args);
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if (log_fp) {
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va_start(args, format);
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write_message(log_fp, LOG_LEVEL_INFO, t, format, args);
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va_end(args);
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}
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}
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void log_perror(const char* context) {
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log_message(LOG_LEVEL_ERROR, "%s: %s", context, strerror(errno));
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}
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