1/*
2 * Copy me if you can.
3 * by 20h
4 */
5
6#ifndef ARG_H__
7#define ARG_H__
8
9extern char *argv0;
10
11/* use main(int argc, char *argv[]) */
12#define ARGBEGIN \
13 for (argv0 = *argv, argv++, argc--; argv[0] && argv[0][0] == '-' && argv[0][1]; \
14 argc--, argv++) { \
15 char argc_; \
16 char **argv_; \
17 int brk_; \
18 if (argv[0][1] == '-' && argv[0][2] == '\0') { \
19 argv++; \
20 argc--; \
21 break; \
22 } \
23 for (brk_ = 0, argv[0]++, argv_ = argv; argv[0][0] && !brk_; argv[0]++) { \
24 if (argv_ != argv) \
25 break; \
26 argc_ = argv[0][0]; \
27 switch (argc_)
28
29/* Handles obsolete -NUM syntax */
30#define ARGNUM \
31 case '0': \
32 case '1': \
33 case '2': \
34 case '3': \
35 case '4': \
36 case '5': \
37 case '6': \
38 case '7': \
39 case '8': \
40 case '9'
41
42#define ARGEND \
43 } \
44 }
45
46#define ARGC() argc_
47
48#define ARGNUMF() (brk_ = 1, estrtonum(argv[0], 0, INT_MAX))
49
50#define EARGF(x) \
51 ((argv[0][1] == '\0' && argv[1] == NULL) \
52 ? ((x), abort(), (char *)0) \
53 : (brk_ = 1, (argv[0][1] != '\0') ? (&argv[0][1]) : (argc--, argv++, argv[0])))
54
55#define ARGF() \
56 ((argv[0][1] == '\0' && argv[1] == NULL) \
57 ? (char *)0 \
58 : (brk_ = 1, (argv[0][1] != '\0') ? (&argv[0][1]) : (argc--, argv++, argv[0])))
59
60#define LNGARG() &argv[0][0]
61
62#endif
