#include <stdio.h>

#include <stdarg.h>

#include "portability.h"

int

pcap_vsnprintf(char *str, size_t str_size, const char *format, va_list args)

{

	int ret;

	ret = _vsnprintf_s(str, str_size, _TRUNCATE, format, args);

	/*

	 * XXX - _vsnprintf() and _snprintf() do *not* guarantee

	 * that str is null-terminated, but C99's vsnprintf()

	 * and snprintf() do, and we want to offer C99 behavior,

	 * so forcibly null-terminate the string.

	 *

	 * We don't, however, offer C99 behavior for the return

	 * value; _vsnprintf_s() returns -1, not the number of

	 * characters that would have been put into the buffer

	 * had it been large enough, if the string is truncated.

	 * The only way to get that value is to use _vscprintf();

	 * getting that count isn't worth the re-formatting.

	 *

	 * XXX - does _vsnprintf_s() return -1 on a formatting

	 * error?

	 */

	str[str_size - 1] = '\0';

	return (ret);

}

int

pcap_snprintf(char *str, size_t str_size, const char *format, ...)

{

	va_list args;

	int ret;

	va_start(args, format);

	ret = pcap_vsnprintf(str, str_size, format, args);

	va_end(args);

	return (ret);

}