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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/*
* Copyright (C) 1996-2025 The Squid Software Foundation and contributors
*
* Squid software is distributed under GPLv2+ license and includes
* contributions from numerous individuals and organizations.
* Please see the COPYING and CONTRIBUTORS files for details.
*/
#include "squid.h"
#include "compat/xalloc.h"
#include "compat/xstring.h"
#include <cerrno>
char *
xstrdup(const char *s)
{
if (!s) {
if (failure_notify) {
(*failure_notify) ("xstrdup: tried to dup a nullptr!\n");
} else {
errno = EINVAL;
perror("xstrdup: tried to dup a nullptr!");
}
exit(1);
}
/* copy string, including terminating character */
size_t sz = strlen(s) + 1;
char *p = static_cast<char *>(xmalloc(sz));
memcpy(p, s, sz);
return p;
}
char *
xstrncpy(char *dst, const char *src, size_t n)
{
char *r = dst;
if (!n || !dst)
return dst;
if (src)
while (--n != 0 && *src != '\0') {
*dst = *src;
++dst;
++src;
}
*dst = '\0';
return r;
}
char *
xstrndup(const char *s, size_t n)
{
if (!s) {
errno = EINVAL;
if (failure_notify) {
(*failure_notify) ("xstrndup: tried to dup a nullptr!\n");
} else {
perror("xstrndup: tried to dup a nullptr!");
}
exit(1);
}
size_t sz = strlen(s) + 1;
// size_t is unsigned, as mandated by c99 and c++ standards.
if (sz > n)
sz = n;
char *p = xstrncpy(static_cast<char *>(xmalloc(sz)), s, sz);
return p;
}
|
