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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996-2003
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: snprintf.c,v 11.12 2003/05/02 16:10:41 bostic Exp $";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <stdio.h>
#endif
#include "db_int.h"
/*
* snprintf --
* Bounded version of sprintf.
*
* PUBLIC: #ifndef HAVE_SNPRINTF
* PUBLIC: int snprintf __P((char *, size_t, const char *, ...));
* PUBLIC: #endif
*/
#ifndef HAVE_SNPRINTF
int
#ifdef STDC_HEADERS
snprintf(char *str, size_t n, const char *fmt, ...)
#else
snprintf(str, n, fmt, va_alist)
char *str;
size_t n;
const char *fmt;
va_dcl
#endif
{
static int ret_charpnt = -1;
va_list ap;
int len;
COMPQUIET(n, 0);
/*
* Some old versions of sprintf return a pointer to the first argument
* instead of a character count. Assume the return value of snprintf,
* vsprintf, etc. will be the same as sprintf, and check the easy one.
*
* We do this test at run-time because it's not a test we can do in a
* cross-compilation environment.
*/
if (ret_charpnt == -1) {
char buf[10];
ret_charpnt =
sprintf(buf, "123") != 3 ||
sprintf(buf, "123456789") != 9 ||
sprintf(buf, "1234") != 4;
}
#ifdef STDC_HEADERS
va_start(ap, fmt);
#else
va_start(ap);
#endif
len = vsprintf(str, fmt, ap);
va_end(ap);
return (ret_charpnt ? (int)strlen(str) : len);
}
#endif
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