[unix-history] / usr / src / lib / libc / stdio / vsnprintf.c

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Chris Torek.
 *
 * %sccs.include.redist.c%
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)vsnprintf.c	5.1 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

#include <stdio.h>

vsnprintf(str, n, fmt, ap)
	char *str;
	size_t n;
	char *fmt;
	_VA_LIST_ ap;
{
	int ret;
	FILE f;

	if ((int)n < 1)
		return (EOF);
	f._flags = __SWR | __SSTR;
	f._bf._base = f._p = (unsigned char *)str;
	f._bf._size = f._w = n - 1;
	ret = vfprintf(&f, fmt, ap);
	*f._p = 0;
	return (ret);
}
Commit	Line	Data
c9be6cfe KB	1	/*-
	2	* Copyright (c) 1990 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Chris Torek.
	7	*
	8	* %sccs.include.redist.c%
	9	*/
	10
	11	#if defined(LIBC_SCCS) && !defined(lint)
	12	static char sccsid[] = "@(#)vsnprintf.c 5.1 (Berkeley) %G%";
	13	#endif /* LIBC_SCCS and not lint */
	14
	15	#include <stdio.h>
	16
	17	vsnprintf(str, n, fmt, ap)
	18	char *str;
	19	size_t n;
	20	char *fmt;
	21	_VA_LIST_ ap;
	22	{
	23	int ret;
	24	FILE f;
	25
	26	if ((int)n < 1)
	27	return (EOF);
	28	f._flags = __SWR \| __SSTR;
	29	f._bf._base = f._p = (unsigned char *)str;
	30	f._bf._size = f._w = n - 1;
	31	ret = vfprintf(&f, fmt, ap);
	32	*f._p = 0;
	33	return (ret);
	34	}