log.c

/*
 * log.c - A logging facility for debugging
 *
 * Copyright (C) 1995-1998 David Firth
 * Copyright (C) 1998-2005 Atari800 development team (see DOC/CREDITS)
 *
 * This file is part of the Atari800 emulator project which emulates
 * the Atari 400, 800, 800XL, 130XE, and 5200 8-bit computers.
 *
 * Atari800 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.
 *
 * Atari800 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 Atari800; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include "config.h"
#include <stdio.h>
#include <stdarg.h>
#include <string.h>

#include "log.h"

#ifdef MACOSX
#  define PRINT(a) ControlManagerMessagePrint(a)
#else
#  define PRINT(a) printf("%s", a)
#endif

#ifdef BUFFERED_LOG
char Log_buffer[Log_BUFFER_SIZE] = "";
#endif

void Log_print(char *format, ...)
{
	va_list args;
	char buffer[8192];
#ifdef BUFFERED_LOG
	int buflen;
#endif

	va_start(args, format);
#ifdef HAVE_VSNPRINTF
	vsnprintf(buffer, sizeof(buffer) - 2 /* -2 for the strcat() */, format, args);
#else
	vsprintf(buffer, format, args);
#endif
	va_end(args);

#ifdef __PLUS
	strcat(buffer, "\r\n");
#else
	strcat(buffer, "\n");
#endif

#ifdef BUFFERED_LOG
	buflen = strlen(buffer);

	if ((strlen(Log_buffer) + strlen(buffer) + 1) > Log_BUFFER_SIZE)
		*Log_buffer = 0;

	strcat(Log_buffer, buffer);
#else
	PRINT(buffer);
#endif
}

void Log_flushlog(void)
{
#ifdef BUFFERED_LOG
	if (*Log_buffer) {
		PRINT(Log_buffer);
		*Log_buffer = 0;
	}
#endif
}