getopt.c

开源的键盘模拟程序

/*
     keyboard emulator project
 
     Copyright (C) 1998-2003 Reznic Valery <[e-mail]>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
*/

   #include <getopt.h>

   struct option long_options[] = {
      {"ascii"      ,  required_argument, 0, 'a'},
      {"background" ,  no_argument,       0, 'b'},
      {"delay"      ,  required_argument, 0, 'd'},
      {"input"      ,  required_argument, 0, 'i'},
      {"key"        ,  required_argument, 0, 'k'},
      {"list"       ,  no_argument,       0, 'l'},
      {"output"     ,  required_argument, 0, 'o'},
      {"text"       ,  required_argument, 0, 't'},
      {"press"      ,  required_argument, 0, 'p'},
      {"release"    ,  required_argument, 0, 'r'},
      {"sleep"      ,  required_argument, 0, 's'},

      {"help"       ,  no_argument,       0, 'h'},
      {"version"    ,  no_argument,       0, 'v'},
      {0            ,  0,                 0, 0}
   };

   int result;
   int option_index = 0;
   while( 1 ) {
      result = getopt_long(
                  argc, 
                  argv, 
                  "-a:bd:i:k:lo:t:p:r:s:hv", 
                  long_options, 
                  &option_index
      );
      if (result == EOF) break;

      switch (result) {
         case 'h':
            usage();
         exit (0);  

         case 'v':
            printf("%s version %s\n", pgm_name, VERSION );
         exit(0);

         case 'l':
            key_name_list();
         exit(0);

         case 'o':
            device = optarg;
         break;

         case 'b':
            need_fork = 1;
         break;

         case 'i':
            operations[op_number].type        = type_file;
            operations[op_number].op.filename = optarg;
            operations[op_number].delay       = delay;
            op_number++;
         break;

         case 'a':
         case 't':
         case  1 :
            operations[op_number].type        = type_ascii;
            operations[op_number].op.filename = optarg;
            operations[op_number].delay       = delay;
            op_number++;
         break;

         case 'k':
         case 'p':
         case 'r':
            switch(result) {
               case 'k': operations[op_number].type = type_key;         break;
               case 'p': operations[op_number].type = type_key_press;   break;
               case 'r': operations[op_number].type = type_key_release; break;
               default:
                  fprintf(stderr, "%s: internal error: result='%c (%d)'\n",
                          pgm_name, result, result
                  );
               exit(1);
            }
            operations[op_number].op.key_code   = kbde_case_name_to_key(optarg);
            if (operations[op_number].op.key_code == 0) {
               fprintf(
                  stderr, 
                  "%s: Unrecognized key name '%s', try `%s -l'\n", 
                  argv[0], optarg, pgm_name
               );
               exit(1);
            }
            operations[op_number].delay         = delay;
            op_number++;
         break;

         case 'd':
            delay = atol(optarg) * MILLI_TO_MICRO;
            if (delay < 0) delay = 0;
         break;

         case 's':
            operations[op_number].type     = type_sleep;
            operations[op_number].op.sleep = atol(optarg) * MILLI_TO_MICRO;
            if (operations[op_number].op.sleep < 0) {
               operations[op_number].op.sleep = 0;
            }
            operations[op_number].delay    = 0;
            op_number++;
         break;

         case ':':
         case '?':
            fprintf(stderr, "Try `%s  --help' for more information.\n", pgm_name);
         exit(1);
      }
   }