new arg.h version by frign
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LICENSE
3
LICENSE
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ISC License
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Copyright (C) 2016-2017 Aaron Marcher
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Copyright (C) 2016-2017 Aaron Marcher <me@drkhsh.at>
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Copyright (C) 2017 Laslo Hunhold <dev@frign.de>
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Permission to use, copy, modify, and/or distribute this software for any purpose
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with or without fee is hereby granted, provided that the above copyright notice
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77
arg.h
77
arg.h
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/*
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* Copy me if you can.
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* by 20h
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*/
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/* See LICENSE file for copyright and license details. */
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#ifndef __ARG_H__
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#define __ARG_H__
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#ifndef ARG_H
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#define ARG_H
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extern char *argv0;
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#define USED(x) ((void)(x))
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/* use main(int argc, char *argv[]) */
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#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
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argv[0] && argv[0][1]\
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&& argv[0][0] == '-';\
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argc--, argv++) {\
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char _argc;\
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char **_argv;\
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int brk;\
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if (argv[0][1] == '-' && argv[0][2] == '\0') {\
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argv++;\
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argc--;\
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break;\
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}\
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for (brk = 0, argv[0]++, _argv = argv;\
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argv[0][0] && !brk;\
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argv[0]++) {\
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if (_argv != argv)\
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break;\
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_argc = argv[0][0];\
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switch (_argc)
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#define ARGEND }\
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USED(_argc);\
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}\
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USED(argv);\
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USED(argc);
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#define ARGC() _argc
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#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
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((x), abort(), (char *)0) :\
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(brk = 1, (argv[0][1] != '\0')?\
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(&argv[0][1]) :\
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(argc--, argv++, argv[0])))
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#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
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(char *)0 :\
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(brk = 1, (argv[0][1] != '\0')?\
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(&argv[0][1]) :\
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(argc--, argv++, argv[0])))
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/* int main(int argc, char *argv[]) */
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#define ARGBEGIN for (argv0 = *argv, *argv ? (argc--, argv++) : ((void *)0); \
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*argv && (*argv)[0] == '-' && (*argv)[1]; argc--, argv++) { \
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int i_, argused_; \
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if ((*argv)[1] == '-' && !(*argv)[2]) { \
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argc--, argv++; \
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break; \
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} \
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for (i_ = 1, argused_ = 0; (*argv)[i_]; i_++) { \
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switch((*argv)[i_])
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#define ARGEND if (argused_) { \
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if ((*argv)[i_ + 1]) { \
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break; \
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} else { \
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argc--, argv++; \
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break; \
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} \
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} \
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} \
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}
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#define ARGC() ((*argv)[i_])
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#define ARGF_(x) (((*argv)[i_ + 1]) ? (argused_ = 1, &((*argv)[i_ + 1])) : \
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(*(argv + 1)) ? (argused_ = 1, *(argv + 1)) : (x))
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#define EARGF(x) ARGF_(((x), exit(1), (char *)0))
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#define ARGF() ARGF_((char *)0)
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#endif
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