main.c

   1 #include <ctype.h>
   2 #include <fcntl.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <sys/ioctl.h>
   7 #include <termios.h>
   8 #include <unistd.h>
   9
  10 #include "main.h"
  11
  12
  13 void
  14 usage(void)
  15 {
  16         fputs("usage: iomenu ", stdout);
  17         puts("[-c] [-n] [-N] [-k key] [-s separator] [-p prompt] [-l lines]");
  18
  19         exit(EXIT_FAILURE);
  20 }
  21
  22
  23 int
  24 main(int argc, char *argv[])
  25 {
  26         int i;
  27         Buffer *buffer    = NULL;
  28         int tty_fd        = open("/dev/tty", O_RDWR);
  29         Opt *opt          = malloc(sizeof(Opt));
  30
  31         opt->line_numbers  = FALSE;
  32         opt->complete      = FALSE;
  33         opt->print_number  = FALSE;
  34         opt->validate_key  = CONTROL('M');
  35         opt->separator     = NULL;
  36         opt->lines         = 30;
  37         opt->prompt        = "";
  38
  39         /* command line arguments */
  40         for (i = 1; i < argc; i++) {
  41                 if (argv[i][0] == '-' && strlen(argv[i]) == 2) {
  42                         switch (argv[i][1]) {
  43                         case 'c':
  44                                 opt->complete = TRUE;
  45                                 break;
  46                         case 'n':
  47                                 opt->line_numbers = TRUE;
  48                                 break;
  49                         case 'N':
  50                                 opt->print_number = TRUE;
  51                                 opt->line_numbers = TRUE;
  52                                 break;
  53                         case 'k':
  54                                 opt->validate_key = (argv[i++][0] == '^') ?
  55                                         CONTROL(argv[i][1]):
  56                                         argv[i][0];
  57                                 break;
  58                         case 's':
  59                                 opt->separator = argv[++i];
  60                                 break;
  61                         case 'l':
  62                                 if (sscanf(argv[++i], "%d", &opt->lines) <= 0)
  63                                         die("Wrong number format after -l.");
  64                                 break;
  65                         case 'p':
  66                                 opt->prompt = argv[++i];
  67                                 break;
  68                         default:
  69                                 usage();
  70                         }
  71                 } else {
  72                         usage();
  73                 }
  74         }
  75
  76         /* command line arguments */
  77         buffer = fill_buffer(opt->separator);
  78
  79         /* set the interface */
  80         filter_lines(buffer, opt);
  81         draw_screen(buffer, tty_fd, opt);
  82
  83         /* listen and interact to input */
  84         input_get(buffer, tty_fd, opt);
  85
  86         draw_clear(opt->lines);
  87
  88         /* close files descriptors and pointers, and free memory */
  89         close(tty_fd);
  90         free(opt);
  91         free_buffer(buffer);
  92
  93         return 0;
  94 }