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#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);
}
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