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spamc/getopt.c  view on Meta::CPAN

   if(!dash && (argv[spamc_optind][0] != '-')) {
      return(EOF);
   }
   if(!dash && (argv[spamc_optind][0] == '-') && !argv[spamc_optind][1]) {
      /* used to specify stdin */
      return(EOF);
   }
   if((argv[spamc_optind][0] == '-') && (argv[spamc_optind][1] == '-')
         && !argv[spamc_optind][2]) {
      /* used to specify end of args */
      return(EOF);
   }
   if((argv[spamc_optind][0] == '-') && argv[spamc_optind][1] && 
         (argv[spamc_optind][1] != '-')) {
      /* short option */
      optchr = 1;
      if(argv[spamc_optind][optchr] == ':')
         return(optiserr(argc, argv, spamc_optind++, optstring, optchr, OPTERRCOLON));

      cp = strchr(optstring, argv[spamc_optind++][optchr]);
      if(cp == NULL)
         return(optiserr(argc, argv, spamc_optind-1, optstring, optchr, OPTERRNF));
      if(cp[1] == ':') {
         /* requires an argument */
         if(!argv[spamc_optind] || (argv[spamc_optind][0] == '-') || 
               (spamc_optind >= argc)) {
            return(optiserr(argc, argv, spamc_optind-1, optstring, optchr, OPTERRARG));
         }
         spamc_optarg = argv[spamc_optind++];
         return(*cp);
      } else {
         dash = 0;
         return(*cp);
      }
   }
   if((argv[spamc_optind][0] == '-') && (argv[spamc_optind][1] == '-') && 
         argv[spamc_optind][2]) {
      /* long option */
      optchr = 2;
      longopt = argv[spamc_optind++];
      if(longopt[2] == ':')
         return(longoptiserr(argc, argv, spamc_optind, OPTERRCOLON));
      longoptlen = strlen(longopt) - 2;
      if((bp = strchr(longopt, '='))) {
         opt = strdup(bp+1);
         if (opt == NULL) {
            fprintf(stderr, "%s: %s\n", argv[0], strerror(errno));
            exit(1);
         }  
         longoptlen -= strlen(bp);
      }

      for(i=0; ; i++) {
	 /* changed to longopts[i].name[0] == 0 - bug 7148 */
         if((longopts[i].name == NULL) || (longopts[i].name[0] == 0)) {
            free(opt);
            return(longoptiserr(argc, argv, spamc_optind-1, OPTERRNF));
         }
         if(((strncmp(longopt+2, longopts[i].name, longoptlen)) == 0) && (strlen(longopts[i].name) == longoptlen)) {
            *longindex = i;
            if(longopts[i].has_arg == required_argument) {
               if(((spamc_optind >= argc) || (!argv[spamc_optind]) || (argv[spamc_optind][0] == '-')) && 
                   (opt == NULL)) {
                  free(opt);
                  return(longoptiserr(argc, argv, spamc_optind-1, OPTERRARG));
               }
               if(opt != NULL) {
                  spamc_optarg = opt;
               } else {
                  spamc_optarg = argv[spamc_optind++];
               }
            } else if(longopts[i].has_arg == optional_argument) {
               if(((spamc_optind < argc) && (argv[spamc_optind]) && (argv[spamc_optind][0] != '-')) || 
                     (opt != NULL)) {
                  if(opt != NULL) {
                     spamc_optarg = opt;
                  } else {
                     spamc_optarg = argv[spamc_optind++];
                  }
               }
            }
            if(longopts[i].flag == NULL) {
               return(longopts[i].val);
            } else {
               *longopts[i].flag = longopts[i].val;
               return(0);
            }
         }
      }
   }
   return(0); /* should never reach here */
}

#ifdef TESTGETOPT
int
 main (int argc, char **argv)
 {
      int c, l;
      extern char *spamc_optarg;
      extern int spamc_optind;
      int aflg = 0;
      int bflg = 0;
      int errflg = 0;
      char *ofile = NULL;
      struct option longopts[] = {
         { "test", required_argument, 0, 't' },
      };

      while ((c = spamc_getopt(argc, argv, "abo:")) != EOF)
           switch (c) {
           case 'a':
                if (bflg)
                     errflg++;
                else
                     aflg++;
                break;
           case 'b':
                if (aflg)
                     errflg++;
                else
                     bflg++;