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
117
|
/*-*- Mode: C; c-basic-offset: 8 -*-*/
#include <assert.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include "util.h"
#include "strv.h"
char *strv_find(char **l, const char *name) {
assert(l);
assert(name);
for (; *l; l++)
if (streq(*l, name))
return *l;
return NULL;
}
void strv_free(char **l) {
char **k;
if (!l)
return;
for (k = l; *k; k++)
free(*k);
free(l);
}
char **strv_copy(char **l) {
char **r, **k;
if (!(r = new(char*, strv_length(l)+1)))
return NULL;
for (k = r; *l; k++, l++)
if (!(*k = strdup(*l)))
goto fail;
*k = NULL;
return r;
fail:
for (k--, l--; k >= r; k--, l--)
free(*k);
return NULL;
}
unsigned strv_length(char **l) {
unsigned n = 0;
if (!l)
return 0;
for (; *l; l++)
n++;
return n;
}
char **strv_new(const char *x, ...) {
const char *s;
char **a;
unsigned n = 0, i = 0;
va_list ap;
if (x) {
n = 1;
va_start(ap, x);
while (va_arg(ap, const char*))
n++;
va_end(ap);
}
if (!(a = new(char*, n+1)))
return NULL;
if (x) {
if (!(a[i] = strdup(x))) {
free(a);
return NULL;
}
i++;
va_start(ap, x);
while ((s = va_arg(ap, const char*))) {
if (!(a[i] = strdup(s)))
goto fail;
i++;
}
va_end(ap);
}
a[i] = NULL;
return a;
fail:
for (; i > 0; i--)
if (a[i-1])
free(a[i-1]);
free(a);
return NULL;
}
|
