mpd/src/log.c

/* the Music Player Daemon (MPD)
 * (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
 * This project's homepage is: http://www.musicpd.org
 *
 * 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 "log.h"

#include "conf.h"
#include "myfprintf.h"
#include "utils.h"

#include <stdlib.h>
#include <string.h>
#include <stdarg.h>

int logLevel = LOG_LEVEL_LOW;
short warningFlushed = 0;

static char *warningBuffer = NULL;

void initLog(void)
{
	ConfigParam *param = getConfigParam(CONF_LOG_LEVEL);

	if (!param)
		return;

	if (0 == strcmp(param->value, "default")) {
		if (logLevel < LOG_LEVEL_LOW)
			logLevel = LOG_LEVEL_LOW;
	} else if (0 == strcmp(param->value, "secure")) {
		if (logLevel < LOG_LEVEL_SECURE)
			logLevel = LOG_LEVEL_SECURE;
	} else if (0 == strcmp(param->value, "verbose")) {
		if (logLevel < LOG_LEVEL_DEBUG)
			logLevel = LOG_LEVEL_DEBUG;
	} else {
		ERROR("unknown log level \"%s\" at line %i\n",
		      param->value, param->line);
		exit(EXIT_FAILURE);
	}
}

#define BUFFER_LENGTH	4096

void bufferWarning(char *format, ...)
{
	va_list arglist;
	char temp[BUFFER_LENGTH + 1];

	memset(temp, 0, BUFFER_LENGTH + 1);

	va_start(arglist, format);

	vsnprintf(temp, BUFFER_LENGTH, format, arglist);

	warningBuffer = appendToString(warningBuffer, temp);

	va_end(arglist);
}

void flushWarningLog(void)
{
	char *s;

	DEBUG("flushing warning messages\n");

	if (warningBuffer == NULL)
		return;

	s = strtok(warningBuffer, "\n");
	while (s != NULL) {
		fdprintf(STDERR_FILENO, "%s\n", s);

		s = strtok(NULL, "\n");
	}

	free(warningBuffer);
	warningBuffer = NULL;

	warningFlushed = 1;
}