Drop looped packets.
[mctap.git] / src / utils.c
... / ...
CommitLineData
1#include <stdlib.h>
2#include <stdio.h>
3
4#include "utils.h"
5
6void _sizebuf2(void **buf, size_t *sz, size_t wanted, size_t el)
7{
8 size_t n;
9
10 n = *sz;
11 if(n == 0)
12 n = 1;
13 while(n < wanted)
14 n <<= 1;
15 if(n <= *sz)
16 return;
17 if(*buf != NULL)
18 *buf = srealloc(*buf, n * el);
19 else
20 *buf = smalloc(n * el);
21 *sz = n;
22}
23
24void _sizebuf(struct buffer *buf, size_t wanted, size_t el)
25{
26 size_t n;
27
28 n = buf->s;
29 if(n == 0)
30 n = 1;
31 while(n < wanted)
32 n <<= 1;
33 if(n <= buf->s)
34 return;
35 if(buf->b != NULL)
36 buf->b = srealloc(buf->b, n * el);
37 else
38 buf->b = smalloc(n * el);
39 buf->s = n;
40}
41
42char *vsprintf2(char *format, va_list al)
43{
44 int ret;
45 char *buf;
46 va_list al2;
47
48 va_copy(al2, al);
49 ret = vsnprintf(NULL, 0, format, al2);
50 va_end(al2);
51 buf = smalloc(ret + 1);
52 va_copy(al2, al);
53 vsnprintf(buf, ret + 1, format, al2);
54 va_end(al2);
55 return(buf);
56}
57
58char *sprintf2(char *format, ...)
59{
60 va_list args;
61 char *buf;
62
63 va_start(args, format);
64 buf = vsprintf2(format, args);
65 va_end(args);
66 return(buf);
67}