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/*
* Copyright 2016 Jakub Klama <jceel@FreeBSD.org>
* All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted providing that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include "log.h"
static const char *l9p_log_level_names[] = {
"DEBUG",
"INFO",
"WARN",
"ERROR"
};
void
l9p_logf(enum l9p_log_level level, const char *func, const char *fmt, ...)
{
const char *dest = NULL;
static FILE *stream = NULL;
va_list ap;
if (stream == NULL) {
dest = getenv("LIB9P_LOGGING");
if (dest == NULL)
return;
else if (!strcmp(dest, "stderr"))
stream = stderr;
else {
stream = fopen(dest, "a");
if (stream == NULL)
return;
}
}
va_start(ap, fmt);
fprintf(stream, "[%s]\t %s: ", l9p_log_level_names[level], func);
vfprintf(stream, fmt, ap);
fprintf(stream, "\n");
fflush(stream);
va_end(ap);
}
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