arg.h
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 for (argv0 = *argv, argv++, argc--;\
13 argv[0] && argv[0][0] == '-'\
14 && argv[0][1];\
15 argc--, argv++) {\
16 char argc_;\
17 char **argv_;\
18 int brk_;\
19 if (argv[0][1] == '-' && argv[0][2] == '\0') {\
20 argv++;\
21 argc--;\
22 break;\
23 }\
24 for (brk_ = 0, argv[0]++, argv_ = argv;\
25 argv[0][0] && !brk_;\
26 argv[0]++) {\
27 if (argv_ != argv)\
28 break;\
29 argc_ = argv[0][0];\
30 switch (argc_)
31
32/* Handles obsolete -NUM syntax */
33#define ARGNUM case '0':\
34 case '1':\
35 case '2':\
36 case '3':\
37 case '4':\
38 case '5':\
39 case '6':\
40 case '7':\
41 case '8':\
42 case '9'
43
44#define ARGEND }\
45 }
46
47#define ARGC() argc_
48
49#define ARGNUMF() (brk_ = 1, estrtonum(argv[0], 0, INT_MAX))
50
51#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
52 ((x), abort(), (char *)0) :\
53 (brk_ = 1, (argv[0][1] != '\0')?\
54 (&argv[0][1]) :\
55 (argc--, argv++, argv[0])))
56
57#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
58 (char *)0 :\
59 (brk_ = 1, (argv[0][1] != '\0')?\
60 (&argv[0][1]) :\
61 (argc--, argv++, argv[0])))
62
63#define LNGARG() &argv[0][0]
64
65#endif
