arg.h - blind - suckless command-line video editing utility | |
git clone git://git.suckless.org/blind | |
Log | |
Files | |
Refs | |
README | |
LICENSE | |
--- | |
arg.h (1781B) | |
--- | |
1 /* | |
2 * Copy me if you can. | |
3 * by 20h | |
4 */ | |
5 | |
6 #ifndef ARG_H__ | |
7 #define ARG_H__ | |
8 | |
9 extern char *argv0; | |
10 | |
11 /* use main(int argc, char *argv[]) */ | |
12 #define ARGBEGIN for (argv0 = *argv, argv++, argc--;\ | |
13 argv[0] && argv[0][0] && argv[0]… | |
14 argc--, argv++) {\ | |
15 char argc_;\ | |
16 char **argv_;\ | |
17 int brk_;\ | |
18 if (argv[0][0] == '-') {\ | |
19 if (argv[0][1] == '-' && argv[0]… | |
20 argv++;\ | |
21 argc--;\ | |
22 break;\ | |
23 }\ | |
24 for (brk_ = 0, argv[0]++, argv_ … | |
25 argv[0][0] && !b… | |
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 ARGALT(SYMBOL) }\ | |
45 } else if (argv[0][0] == SYMBOL) {\ | |
46 for (brk_ = 0, argv[0]++, argv_ … | |
47 argv[0][0] && !b… | |
48 argv[0]++) {\ | |
49 if (argv_ != argv)\ | |
50 break;\ | |
51 argc_ = argv[0][0];\ | |
52 switch (argc_) | |
53 | |
54 #define ARGEND }\ | |
55 } else {\ | |
56 break;\ | |
57 }\ | |
58 } | |
59 | |
60 #define ARGC() argc_ | |
61 | |
62 #define ARGNUMF() (brk_ = 1, estrtonum(argv[0], 0, INT_MAX)) | |
63 | |
64 #define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\ | |
65 ((x), abort(), (char *)0) :\ | |
66 (brk_ = 1, (argv[0][1] != '\0')?\ | |
67 (&argv[0][1]) :\ | |
68 (argc--, argv++, argv[0]))) | |
69 | |
70 #define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\ | |
71 (char *)0 :\ | |
72 (brk_ = 1, (argv[0][1] != '\0')?\ | |
73 (&argv[0][1]) :\ | |
74 (argc--, argv++, argv[0]))) | |
75 | |
76 #define UARGF() EARGF(usage()) | |
77 | |
78 #define LNGARG() &argv[0][0] | |
79 | |
80 #define UNOFLAGS(...) ARGBEGIN {\ | |
81 default:\ | |
82 usage();\ | |
83 } ARGEND;\ | |
84 if (__VA_ARGS__)\ | |
85 usage() | |
86 | |
87 | |
88 #endif |