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/**
* @file log_msg.c
*
* @author Damien S. Stuart
*
* @brief General logging routine that can write to stderr
* and can take variable number of args.
*
* Copyright 2009-2013 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include "fwknop_common.h"
#include "log_msg.h"
#include <stdarg.h>
#define LOG_STREAM_STDERR stderr /*!< Error and warning messages are redirected to stderr */
#define LOG_STREAM_STDOUT stdout /*!< Normal, info and debug messages are redirected to stdout */
typedef struct
{
int verbosity; /*!< Verbosity level (LOG_VERBOSITY_DEBUG...*/
} log_ctx_t;
static log_ctx_t log_ctx; /*!< Structure to store the context of the module */
/**
* Set up the context for the log module.
*
* This function only initialize the verbosity level
*/
void
log_new(void)
{
log_ctx.verbosity = LOG_DEFAULT_VERBOSITY;
}
/**
* Destroy the context for the log module.
*
* This function is not used at the moment since the module does not open file
* which would require to be closed;
*/
void
log_free(void)
{
}
/**
* Set the verbosity level for the current context of the log module.
*
* @param level verbosity level to set
*/
void
log_set_verbosity(int level)
{
log_ctx.verbosity = level;
}
/**
* Log a message
*
* This function sends a message to the stream dedicated to the priority
* set. If the verbosity for the context is higher than the one used for
* the message, then the message is discarded.
*
* @param level Verbosity level to used for the message.
* @param msg Message to print
*/
void
log_msg(int level, char* msg, ...)
{
va_list ap;
if (level <= log_ctx.verbosity)
{
va_start(ap, msg);
switch (level)
{
case LOG_VERBOSITY_ERROR:
case LOG_VERBOSITY_WARNING:
vfprintf(LOG_STREAM_STDERR, msg, ap);
fprintf(LOG_STREAM_STDERR, "\n");
break;
case LOG_VERBOSITY_NORMAL:
case LOG_VERBOSITY_INFO:
case LOG_VERBOSITY_DEBUG:
default :
vfprintf(LOG_STREAM_STDOUT, msg, ap);
fprintf(LOG_STREAM_STDOUT, "\n");
break;
}
va_end(ap);
}
else;
}
/***EOF***/
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