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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/* See LICENSE file for copyright and license details. */
#include "libsimple.h"
#ifndef TEST
char *
libsimple_strndup(const char *s, size_t n)
{
char *ret;
size_t m = strlen(s);
n = MIN(n, m);
if (n == SIZE_MAX) {
errno = ENOMEM;
return NULL;
}
if (!(ret = malloc(n + 1)))
return NULL;
memcpy(ret, s, n);
ret[n] = '\0';
return ret;
}
#else
#include "test.h"
int
main(void)
{
const char *s = "test";
void *p;
p = libsimple_strndup(s, 5);
assert(p && p != s);
assert(!strcmpnul(p, "test"));
memset(p, 0, 5);
assert(!strcmpnul(s, "test"));
free(p);
p = libsimple_strndup(s, 3);
assert(p && p != s);
assert(!strcmpnul(p, "tes"));
memset(p, 0, 4);
assert(!strcmpnul(s, "test"));
free(p);
p = libsimple_strndup(s, 0);
assert(p && p != s);
assert(!strcmpnul(p, ""));
memset(p, 0, 1);
assert(!strcmpnul(s, "test"));
free(p);
return 0;
}
#endif
|
