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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
//
// Copyright 2017 Garrett D'Amore <garrett@damore.org>
// Copyright 2017 Capitar IT Group BV <info@capitar.com>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <stdlib.h>
#include <string.h>
#include "core/nng_impl.h"
// This file contains implementation of utility functions that are not
// part of standard C99. (C11 has added some things here, but we cannot
// count on them.)
char *
nni_strdup(const char *src)
{
#ifdef NNG_HAVE_STRDUP
#ifdef _WIN32
return (_strdup(src));
#else
return (strdup(src));
#endif
#else
char * dst;
size_t len = strlen(src);
if ((dst = nni_alloc(len)) != NULL) {
memcpy(dst, src, len);
}
return (dst);
#endif
}
void
nni_strfree(char *s)
{
if (s != NULL) {
#ifdef NNG_HAVE_STRDUP
free(s);
#else
nni_free(s, strlen(s) + 1);
#endif
}
}
size_t
nni_strlcpy(char *dst, const char *src, size_t len)
{
#ifdef NNG_HAVE_STRLCPY
return (strlcpy(dst, src, len));
#else
size_t n;
char c;
n = 0;
do {
c = *src++;
n++;
if (n < len) {
*dst++ = c;
} else if (n == len) {
*dst = '\0';
}
} while (c);
return (n - 1);
#endif
}
size_t
nni_strlcat(char *dst, const char *src, size_t len)
{
#ifdef NNG_HAVE_STRLCAT
return (strlcat(dst, src, len));
#else
size_t n;
char c;
n = 0;
while ((*dst != '\0') && (n < len)) {
n++;
dst++;
}
do {
c = *src++;
n++;
if (n < len) {
*dst++ = c;
} else if (n == len) {
*dst = '\0';
}
} while (c);
return (n - 1);
#endif
}
size_t
nni_strnlen(const char *s, size_t len)
{
#ifdef NNG_HAVE_STRNLEN
return (strnlen(s, len));
#else
size_t n;
for (n = 0; (n < len) && (*s); n++) {
s++;
}
return (n);
#endif
}
|
