net-snmp/snmplib/asprintf.c

46 lines
740 B
C

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <net-snmp/net-snmp-config.h>
#ifndef HAVE_ASPRINTF
NETSNMP_IMPORT
int vasprintf(char **strp, const char *fmt, va_list ap)
{
va_list ap_copy;
char *str;
int len;
#ifdef va_copy
va_copy(ap_copy, ap);
#else
__va_copy(ap_copy, ap);
#endif
len = vsnprintf(NULL, 0, fmt, ap_copy);
va_end(ap_copy);
if (len < 0)
return len;
len++;
str = malloc(len);
*strp = str;
return str ? vsnprintf(str, len, fmt, ap) : -1;
}
NETSNMP_IMPORT
int asprintf(char **strp, const char *fmt, ...)
{
va_list arg;
int done;
va_start(arg, fmt);
done = vasprintf(strp, fmt, arg);
va_end(arg);
return done;
}
#endif