diff options
| -rw-r--r-- | arg.h | 106 |
1 files changed, 48 insertions, 58 deletions
@@ -1,65 +1,55 @@ /* - * Copy me if you can. - * by 20h + * ISC-License + * + * (c) 2017 Laslo Hunhold <dev@frign.de> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE + * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. */ - -#ifndef ARG_H__ -#define ARG_H__ +#ifndef ARG_H +#define ARG_H extern char *argv0; -/* use main(int argc, char *argv[]) */ -#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\ - argv[0] && argv[0][0] == '-'\ - && argv[0][1];\ - argc--, argv++) {\ - char argc_;\ - char **argv_;\ - int brk_;\ - if (argv[0][1] == '-' && argv[0][2] == '\0') {\ - argv++;\ - argc--;\ - break;\ - }\ - for (brk_ = 0, argv[0]++, argv_ = argv;\ - argv[0][0] && !brk_;\ - argv[0]++) {\ - if (argv_ != argv)\ - break;\ - argc_ = argv[0][0];\ - switch (argc_) - -/* Handles obsolete -NUM syntax */ -#define ARGNUM case '0':\ - case '1':\ - case '2':\ - case '3':\ - case '4':\ - case '5':\ - case '6':\ - case '7':\ - case '8':\ - case '9' - -#define ARGEND }\ - } - -#define ARGC() argc_ - -#define ARGNUMF() (brk_ = 1, estrtonum(argv[0], 0, INT_MAX)) - -#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\ - ((x), abort(), (char *)0) :\ - (brk_ = 1, (argv[0][1] != '\0')?\ - (&argv[0][1]) :\ - (argc--, argv++, argv[0]))) - -#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\ - (char *)0 :\ - (brk_ = 1, (argv[0][1] != '\0')?\ - (&argv[0][1]) :\ - (argc--, argv++, argv[0]))) - -#define LNGARG() &argv[0][0] +/* int main(int argc, char *argv[]) */ +#define ARGBEGIN for (argv0 = *argv, argv++, argc--; \ + *argv && (*argv)[0] == '-' && (*argv)[1]; argc--, argv++) { \ + int argparsed; \ + if ((*argv)[1] == '-' && (*argv)[2] == '\0') { \ + argc--, argv++; \ + break; \ + } \ + for (argparsed = 0, (*argv)++; (*argv)[0]; (*argv)++) { \ + switch((*argv)[0]) +#define ARGEND if (argparsed) { \ + if ((*argv)[1] != '\0') { \ + break; \ + } else { \ + argc--, argv++; \ + break; \ + } \ + } \ + } \ + } +#define ARGC() *argv[0] +#define ARGF_(x) (((*argv)[1] == '\0' && !*(argv + 1)) ? \ + (x) : \ + (argparsed = 1, ((*argv)[1] != '\0') ? \ + (&(*argv)[1]) : \ + (*(argv + 1)) \ + ) \ + ) +#define EARGF(x) ARGF_(((x), exit(1), (char *)0)) +#define ARGF() ARGF_((char *)0) #endif |