44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
#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);
|
|
}
|