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arg.h in master
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arg.h (1684B) download


 1/* See LICENSE file for copyright and license details. */
 2#ifndef ARG_H
 3#define ARG_H
 4
 5extern char *argv0;
 6
 7/* int main(int argc, char *argv[]) */
 8#define ARGBEGIN for (argv0 = *argv, *argv ? (argc--, argv++) : ((void *)0);      \
 9                      *argv && (*argv)[0] == '-' && (*argv)[1]; argc--, argv++) { \
10                 	int i_, argused_;                                         \
11                 	if ((*argv)[1] == '-' && !(*argv)[2]) {                   \
12                 		argc--, argv++;                                   \
13                 		break;                                            \
14                 	}                                                         \
15                 	for (i_ = 1, argused_ = 0; (*argv)[i_]; i_++) {           \
16				switch ((*argv)[i_])
17#define ARGEND   		if (argused_) {                                   \
18                 			if ((*argv)[i_ + 1]) {                    \
19                 				break;                            \
20                 			} else {                                  \
21                 				argc--, argv++;                   \
22                 				break;                            \
23                 			}                                         \
24                 		}                                                 \
25                 	}                                                         \
26                 }
27#define ARGC()    ((*argv)[i_])
28#define ARGF_(x) (((*argv)[i_ + 1]) ? (argused_ = 1, &((*argv)[i_ + 1])) :        \
29                  (*(argv + 1))     ? (argused_ = 1, *(argv + 1))        : (x))
30#define EARGF(x) ARGF_(((x), exit(1), (char *)0))
31#define ARGF()   ARGF_((char *)0)
32
33#endif