src/cmd.c

   1 #include <config.h>
   2 #include "cmd.h"
   3 #include <getopt.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7
   8 static void
   9 printf_option(const char *option, const char *description)
  10 {
  11   printf("  %-20s%-20s\n", option, description);
  12 }
  13 static void
  14 print_help(void)
  15 {
  16   printf("Usage: thales [options]\n");
  17   printf_option("--help, -h", "Display this information");
  18   printf_option("--version, -v", "Display thales version");
  19   printf_option("--debug, -d", "Enable output of debug information");
  20   printf_option("--config, -C", "Override default configuration file");
  21 }
  22
  23 static void
  24 print_version(void)
  25 {
  26   puts(PACKAGE_STRING);
  27   puts("Copyright (C) 2012 Free Software Foundation, Inc.");
  28   puts("This is free software; see the source for copying conditions.  There is NO");
  29   puts("warranty; not even for MERCHANTABILITY "
  30        "or FITNESS FOR A PARTICULAR PURPOSE.");
  31 }
  32
  33 void
  34 parse_cmdopts(struct cmd_options *opts, int argc, char **argv)
  35 {
  36   int val;
  37   const char *optstr = "hvdC:";
  38   struct option longopts[] = {
  39     {"help", no_argument, NULL, 'h'},
  40     {"version", no_argument, NULL, 'v'},
  41     {"config", required_argument, NULL, 'C'},
  42     {"debug", no_argument, &opts->debug, 'd'}
  43   };
  44   while ((val = getopt_long(argc, argv, optstr, longopts, NULL))!= EOF)
  45     switch (val)
  46       {
  47       case 'h':
  48         print_help();
  49         exit(EXIT_SUCCESS);
  50       case 'v':
  51         print_version();
  52         exit(EXIT_SUCCESS);
  53       case 'c':
  54         opts->conf_filename = optarg;
  55         break;
  56       case '?':
  57         exit(EXIT_FAILURE);
  58       }
  59 }