/*
* Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
* All rights reserved.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the sendmail distribution.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
SM_RCSID("@(#)$Id: snprintf.c,v 1.24 2006/10/12 21:50:10 ca Exp $")
#include <limits.h>
#include "local.h"
/*
** SM_SNPRINTF -- format a string to a memory location of restricted size
**
** Parameters:
** str -- memory location to place formatted string
** n -- size of buffer pointed to by str, capped to
** a maximum of INT_MAX
** fmt -- the formatting directives
** ... -- the data to satisfy the formatting
**
** Returns:
** Failure: -1
** Success: number of bytes that would have been written
** to str, not including the trailing '\0',
** up to a maximum of INT_MAX, as if there was
** no buffer size limitation. If the result >= n
** then the output was truncated.
**
** Side Effects:
** If n > 0, then between 0 and n-1 bytes of formatted output
** are written into 'str', followed by a '\0'.
*/
int
#if SM_VA_STD
#else /* SM_VA_STD */
char *str;
size_t n;
char *fmt;
#endif /* SM_VA_STD */
{
int ret;
/* While snprintf(3) specifies size_t stdio uses an int internally */
if (n > INT_MAX)
n = INT_MAX;
/* XXX put this into a static? */
if (n > 0)
return ret;
}