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/**
* Copyright (C) 2011-2012 Juho Vähä-Herttua
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
*===============================================================
* modified by fduncanh 2023-25
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include "logger.h"
#include "compat.h"
struct logger_s {
mutex_handle_t lvl_mutex;
mutex_handle_t cb_mutex;
int level;
void *cls;
logger_callback_t callback;
};
logger_t *
logger_init()
{
logger_t *logger = calloc(1, sizeof(logger_t));
assert(logger);
MUTEX_CREATE(logger->lvl_mutex);
MUTEX_CREATE(logger->cb_mutex);
logger->level = LOGGER_WARNING;
logger->callback = NULL;
return logger;
}
void
logger_destroy(logger_t *logger)
{
MUTEX_DESTROY(logger->lvl_mutex);
MUTEX_DESTROY(logger->cb_mutex);
free(logger);
}
void
logger_set_level(logger_t *logger, int level)
{
assert(logger);
MUTEX_LOCK(logger->lvl_mutex);
logger->level = level;
MUTEX_UNLOCK(logger->lvl_mutex);
}
int
logger_get_level(logger_t *logger)
{
assert(logger);
MUTEX_LOCK(logger->lvl_mutex);
int level = logger->level;
MUTEX_UNLOCK(logger->lvl_mutex);
return level;
}
void
logger_set_callback(logger_t *logger, logger_callback_t callback, void *cls)
{
assert(logger);
MUTEX_LOCK(logger->cb_mutex);
logger->cls = cls;
logger->callback = callback;
MUTEX_UNLOCK(logger->cb_mutex);
}
void
logger_log(logger_t *logger, int level, const char *fmt, ...)
{
MUTEX_LOCK(logger->lvl_mutex);
if (level > logger->level) {
MUTEX_UNLOCK(logger->lvl_mutex);
return;
}
MUTEX_UNLOCK(logger->lvl_mutex);
char buffer[4096] = {0};
char err_fmt[] = "---logger message is truncated from %d to %d chars---\n";
char err_buf[128] = {0};
va_list ap;
va_start(ap, fmt);
int message_len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
va_end(ap);
if (message_len >= (int) sizeof(buffer)) {
snprintf(err_buf, sizeof(err_buf), err_fmt, message_len, (int) sizeof(buffer) -1);
}
MUTEX_LOCK(logger->cb_mutex);
assert (logger->callback);
logger->callback(logger->cls, level, buffer);
if (err_buf[0]) {
logger->callback(logger->cls, level, err_buf);
}
MUTEX_UNLOCK(logger->cb_mutex);
}
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