arg.h
/* See LICENSE file for copyright and license details. */ #ifndef ARG_H #define ARG_H extern char *argv0; /* int main(int argc, char *argv[]) */ #define ARGBEGIN for (argv0 = *argv, *argv ? (argc--, argv++) : ((void *)0); \ *argv && (*argv)[0] == '-' && (*argv)[1]; argc--, argv++) { \ int i_, argused_; \ if ((*argv)[1] == '-' && !(*argv)[2]) { \ argc--, argv++; \ break; \ } \ for (i_ = 1, argused_ = 0; (*argv)[i_]; i_++) { \ switch((*argv)[i_]) #define ARGEND if (argused_) { \ if ((*argv)[i_ + 1]) { \ break; \ } else { \ argc--, argv++; \ break; \ } \ } \ } \ } #define ARGC() ((*argv)[i_]) #define ARGF_(x) (((*argv)[i_ + 1]) ? (argused_ = 1, &((*argv)[i_ + 1])) : \ (*(argv + 1)) ? (argused_ = 1, *(argv + 1)) : (x)) #define EARGF(x) ARGF_(((x), exit(1), (char *)0)) #define ARGF() ARGF_((char *)0) #endif