git.itanic.dy.fi Git - log-plotter/blob - options.c

   1 #include <getopt.h>
   2 #include <string.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 #include "options.h"
   7 #include "debug.h"
   8
   9 static void set_default_options(struct plotter_options *opts)
  10 {
  11         bzero(opts, sizeof(*opts));
  12
  13         opts->baud_rate = 128000;
  14         opts->device_path = "/dev/ttyUSB0";
  15 }
  16
  17 int read_args(int argc, char *argv[], struct plotter_options *opts)
  18 {
  19         int option_index = 0, c;
  20         static struct option long_options[] = {
  21                 { .val = 'd', .name = "device", .has_arg = 1, },
  22                 { .val = 'o', .name = "output", .has_arg = 1 },
  23                 { .val = 'o', .name = "baud", .has_arg = 1 },
  24                 { .val = 'v', .name = "verbose", .has_arg = 2 },
  25                 { .val = 'q', .name = "quiet", },
  26         };
  27         char short_options[] = "d:o:b:vq";
  28
  29         set_default_options(opts);
  30
  31         while (1) {
  32                 c = getopt_long(argc, argv, short_options, long_options,
  33                                 &option_index);
  34
  35                 if (c == -1)
  36                         break;
  37
  38                 switch (c) {
  39                 case 'd':
  40                         opts->device_path = optarg;
  41                         break;
  42                 case 'o':
  43                         opts->output_path = optarg;
  44                         break;
  45                 case 'b':
  46                         opts->baud_rate = atoi(optarg);
  47                         break;
  48                 case 'v':
  49                         trace_level++;
  50                         pr_debug("Increased trace level to %d\n", trace_level);
  51                         break;
  52                 case 'q':
  53                         trace_level--;
  54                         pr_debug("Degreased trace level to %d\n", trace_level);
  55                         break;
  56                 case '?':
  57                         return -1;
  58                 }
  59         }
  60
  61         while (optind < argc) {
  62                 /* The rest of the options, ignored */
  63                 optind++;
  64         }
  65
  66         return 0;
  67 }