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//**********************************************************************;
// Copyright (c) 2017, Intel Corporation
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided 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.
//
// 3. Neither the name of Intel Corporation nor the names of its contributors
// may be used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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 <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include "log.h"
/*
* Note that the logging library is not thread safe, thus calls on separate
* threads will yield an interleaved output on stderr.
*/
static log_level current_log_level = log_level_warning;
void
log_set_level (log_level value)
{
current_log_level = value;
}
static const char *
get_level_msg (log_level level)
{
const char *value = "UNK";
switch (level)
{
case log_level_error:
value = "ERROR";
break;
case log_level_warning:
value = "WARN";
break;
case log_level_verbose:
value = "INFO";
}
return value;
}
void
_log (log_level level, const char *file, unsigned lineno, const char *fmt, ...)
{
/* Skip printing messages outside of the log level */
if (level > current_log_level)
return;
va_list argptr;
va_start(argptr, fmt);
/* Verbose output prints file and line on error */
if (current_log_level >= log_level_verbose)
fprintf (stderr, "%s on line: \"%u\" in file: \"%s\": ",
get_level_msg (level), lineno, file);
else
fprintf (stderr, "%s: ", get_level_msg (level));
/* Print the user supplied message */
vfprintf (stderr, fmt, argptr);
/* always add a new line so the user doesn't have to */
fprintf (stderr, "\n");
va_end(argptr);
}
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