aboutsummaryrefslogtreecommitdiffstats
path: root/com32/lib/asprintf.c
blob: eab20118860cefd912854b5dca68d772b704ee4b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
/*
 * asprintf.c
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>

int asprintf(char **bufp, const char *format, ...)
{
    va_list ap, ap1;
    int rv;
    int bytes;
    char *p;

    va_start(ap, format);
    va_copy(ap1, ap);

    bytes = vsnprintf(NULL, 0, format, ap1) + 1;
    va_end(ap1);

    *bufp = p = malloc(bytes);
    if (!p)
	rv = -1;
    else
	rv = vsnprintf(p, bytes, format, ap);

    va_end(ap);

    return rv;
}