/* -*-  Mode:C; c-basic-offset:4; tab-width:4 -*-
 ****************************************************************************
 * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge
 ****************************************************************************
 *
 *        File: lib.h
 *      Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk)
 *     Changes:
 *
 *        Date: Aug 2003
 *
 * Environment: Xen Minimal OS
 * Description: Random useful library functions, contains some freebsd stuff
 *
 ****************************************************************************
 * $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $
 ****************************************************************************
 *
 *-
 * Copyright (c) 1991, 1993
 *      The Regents of the University of California.  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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
 *
 *      @(#)stdarg.h    8.1 (Berkeley) 6/10/93
 * $FreeBSD: src/sys/i386/include/stdarg.h,v 1.10 1999/08/28 00:44:26 peter Exp
 *$
 */

#pragma once

#include "stdarg.h"
#include <types.h>

/* printing */
int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);

int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);

int snprintf(char *buf, size_t size, const char *fmt, ...);

int scnprintf(char *buf, size_t size, const char *fmt, ...);

// a pretty simple way to avoid kernel buffer overflow attacks, no?
// int vsprintf(char *buf, const char *fmt, va_list args);
// int sprintf(char *buf, const char *fmt, ...);

/* A variation on printf designed to be used in debug info functions.
 * The function takes in a pointer to the address of a string buffer
 * and a pointer to the size of the buffer. The buffer address pointed
 * by str is incremented to point to the null character writen at the
 * end of the new string. The size is decremented by the number of
 * characters writen, not including the null character. The function
 * returns the number of characters left in the buffer (after taking
 * in to account the null character). */
int iprintf(char **str, size_t *size, char *fmt, ...)
    __attribute__((format(printf, 3, 4)));

int vsscanf(const char *buf, const char *fmt, va_list args);

int sscanf(const char *buf, const char *fmt, ...);