src/cmd.c

   1 /*  Command line parsing program of GNU Thales.  Copyright (C)
   2 2012 Free Software Foundation, Inc.  This file is part of GNU Thales.
   3
   4 GNU Thales is free software; you can redistribute it and/or modify it under the
   5 terms of the GNU General Public License as published by the Free Software
   6 Foundation; either version 3 of the License, or (at your option) any later
   7 version.
   8
   9 GNU Make is distributed in the hope that it will be useful, but
  10 WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License along with
  15 this program.  If not, see <http://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18 #include "cmd.h"
  19 #include <getopt.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <unistd.h>
  23
  24 static void
  25 printf_option(const char *option, const char *description)
  26 {
  27   printf("  %-20s%-20s\n", option, description);
  28 }
  29 static void
  30 print_help(void)
  31 {
  32   printf("Usage: thales [options]\n");
  33   printf_option("--help, -h", "Display this information");
  34   printf_option("--version, -v", "Display thales version");
  35   printf_option("--debug, -d", "Enable output of debug information");
  36   printf_option("--config, -C", "Override default configuration file");
  37 }
  38
  39 static void
  40 print_version(void)
  41 {
  42   puts(PACKAGE_STRING);
  43   puts("Copyright (C) 2012 Free Software Foundation, Inc.");
  44   puts("This is free software; see the source for copying conditions.  There is NO");
  45   puts("warranty; not even for MERCHANTABILITY "
  46        "or FITNESS FOR A PARTICULAR PURPOSE.");
  47 }
  48
  49 void
  50 parse_cmdopts(struct cmd_options *opts, int argc, char **argv)
  51 {
  52   int val;
  53   const char *optstr = "hvdC:";
  54   struct option longopts[] = {
  55     {"help", no_argument, NULL, 'h'},
  56     {"version", no_argument, NULL, 'v'},
  57     {"config", required_argument, NULL, 'C'},
  58     {"debug", no_argument, &opts->debug, 'd'}
  59   };
  60   while ((val = getopt_long(argc, argv, optstr, longopts, NULL))!= EOF)
  61     switch (val)
  62       {
  63       case 'h':
  64         print_help();
  65         exit(EXIT_SUCCESS);
  66       case 'v':
  67         print_version();
  68         exit(EXIT_SUCCESS);
  69       case 'c':
  70         opts->conf_filename = optarg;
  71         break;
  72       case '?':
  73         exit(EXIT_FAILURE);
  74       }
  75 }