usr.bin/getopt/getopt.c

   1 /*      $NetBSD: getopt.c,v 1.7 2006/07/09 21:38:47 wiz Exp $   */
   2
   3 /*
   4  * This material, written by Henry Spencer, was released by him
   5  * into the public domain and is thus not subject to any copyright.
   6  */
   7
   8 #include <sys/cdefs.h>
   9 #ifndef lint
  10 __RCSID("$NetBSD: getopt.c,v 1.7 2006/07/09 21:38:47 wiz Exp $");
  11 #endif /* not lint */
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <unistd.h>
  16
  17 int
  18 main(int argc, char *argv[])
  19 {
  20         int c;
  21         int status = 0;
  22
  23         optind = 2;     /* Past the program name and the option letters. */
  24         while ((c = getopt(argc, argv, argv[1])) != -1)
  25                 switch (c) {
  26                 case '?':
  27                         status = 1;     /* getopt routine gave message */
  28                         break;
  29                 default:
  30                         if (optarg != NULL)
  31                                 printf(" -%c %s", c, optarg);
  32                         else
  33                                 printf(" -%c", c);
  34                         break;
  35                 }
  36         printf(" --");
  37         for (; optind < argc; optind++)
  38                 printf(" %s", argv[optind]);
  39         printf("\n");
  40         exit(status);
  41 }