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
|
#include "rc.h"
int rc_opterr = 1;
int rc_optind = 1;
int rc_optopt;
char *rc_optarg;
/* getopt routine courtesy of David Sanderson */
extern int rc_getopt(int argc, char **argv, char *opts) {
static int sp = 1;
int c;
char *cp;
if (rc_optind == 0) /* reset rc_getopt() */
rc_optind = sp = 1;
if (sp == 1) {
if (rc_optind >= argc || argv[rc_optind][0] != '-' || argv[rc_optind][1] == '\0') {
return -1;
} else if (strcmp(argv[rc_optind], "--") == 0) {
rc_optind++;
return -1;
}
}
rc_optopt = c = argv[rc_optind][sp];
if (c == ':' || (cp=strchr(opts, c)) == 0) {
fprint(2, "%s: bad option: -%c\n", argv[0], c);
if (argv[rc_optind][++sp] == '\0') {
rc_optind++;
sp = 1;
}
return '?';
}
if (*++cp == ':') {
if (argv[rc_optind][sp+1] != '\0') {
rc_optarg = &argv[rc_optind++][sp+1];
} else if (++rc_optind >= argc) {
fprint(2, "%s: option requires an argument -- %c\n", argv[0], c);
sp = 1;
return '?';
} else
rc_optarg = argv[rc_optind++];
sp = 1;
} else {
if (argv[rc_optind][++sp] == '\0') {
sp = 1;
rc_optind++;
}
rc_optarg = NULL;
}
return c;
}
|
