lnm/src/lnm_log.c

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2024-01-27 22:54:53 +01:00
#include <stdio.h>
#include <time.h>
#include "lnm/common.h"
#include "lnm/log_internal.h"
const char *lnm_log_level_names[] = {"DEBUG ", "INFO ", "NOTICE ",
"WARNING ", "ERROR ", "CRITICAL"};
lnm_logger *global_logger = NULL;
lnm_err lnm_log_init_global() {
global_logger = calloc(1, sizeof(lnm_logger));
return global_logger == NULL ? lnm_err_failed_alloc : lnm_err_ok;
}
lnm_err lnm_logger_stream_register(lnm_logger *logger,
lnm_logger_stream *stream) {
lnm_logger_stream **new =
logger->streams.len == 0
? malloc(sizeof(lnm_logger_stream *))
: realloc(logger->streams.arr,
(logger->streams.len + 1) * sizeof(lnm_logger_stream *));
if (new == NULL) {
return lnm_err_failed_alloc;
}
new[logger->streams.len] = stream;
logger->streams.arr = new;
logger->streams.len++;
return lnm_err_ok;
}
lnm_err lnm_log_register_stdout(lnm_log_level level) {
lnm_logger_stream *stream = malloc(sizeof(lnm_logger_stream));
if (stream == NULL) {
return lnm_err_failed_alloc;
}
stream->type = lnm_logger_stream_type_file;
stream->ptr = stdout;
stream->level = level;
LNM_RES2(lnm_logger_stream_register(global_logger, stream), free(stream));
return lnm_err_ok;
}
void lnm_vlog(lnm_log_level level, const char *section, const char *fmt,
va_list ap) {
char date_str[32];
time_t now = time(NULL);
strftime(date_str, sizeof(date_str) - 1, "%Y-%m-%d %H:%M:%S",
localtime(&now));
for (size_t i = 0; i < global_logger->streams.len; i++) {
lnm_logger_stream *stream = global_logger->streams.arr[i];
if (level < stream->level) {
continue;
}
switch (stream->type) {
case lnm_logger_stream_type_file:
fprintf(stream->ptr, "[%s][%s][%s] ", date_str,
lnm_log_level_names[level], section);
vfprintf(stream->ptr, fmt, ap);
fprintf(stream->ptr, "\n");
break;
}
va_end(ap);
}
}
void lnm_log(lnm_log_level level, const char *section, const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
lnm_vlog(level, section, fmt, ap);
va_end(ap);
}