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