fapi_5g/source/utils/nr5g_fapi_args.c

   1 /******************************************************************************
   2 *
   3 *   Copyright (c) 2021 Intel.
   4 *
   5 *   Licensed under the Apache License, Version 2.0 (the "License");
   6 *   you may not use this file except in compliance with the License.
   7 *   You may obtain a copy of the License at
   8 *
   9 *       http://www.apache.org/licenses/LICENSE-2.0
  10 *
  11 *   Unless required by applicable law or agreed to in writing, software
  12 *   distributed under the License is distributed on an "AS IS" BASIS,
  13 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 *   See the License for the specific language governing permissions and
  15 *   limitations under the License.
  16 *
  17 *******************************************************************************/
  18
  19 #include "nr5g_fapi_args.h"
  20 #include <stddef.h>
  21 #include <getopt.h>
  22
  23 static const char usage[] =
  24     "                                                                               \n"
  25     "    %s <APP PARAMS>                                                            \n"
  26     "                                                                               \n"
  27     "Application mandatory parameters:                                              \n"
  28     "    --cfg FILE : configuration to load                                         \n"
  29     "                                                                               \n"
  30     "    --f FILE   : configuration to load                                         \n";
  31
  32 /* display usage */
  33 static void nr5g_fapi_usage(
  34     const char *prgname)
  35 {
  36     printf(usage, prgname);
  37 }
  38
  39 const char *nr5g_fapi_parse_args(
  40     int argc,
  41     char **argv)
  42 {
  43     int opt;
  44     int option_index;
  45     const char *optname;
  46     char *cfg_file = NULL;
  47     char *prgname = argv[0];
  48
  49     static struct option lgopts[] = {
  50         {"cfg", 1, 0, 0},
  51         {NULL, 0, 0, 0}
  52     };
  53
  54     while ((opt = getopt_long(argc, argv, "f", lgopts, &option_index)) != EOF) {
  55         switch (opt) {
  56             case 'f':
  57                 printf("short opts");
  58                 cfg_file = optarg;
  59                 break;
  60
  61                 /* long options */
  62             case 0:
  63                 printf("long opts");
  64                 optname = lgopts[option_index].name;
  65                 if (0 == strcmp(optname, "cfg")) {
  66                     cfg_file = optarg;
  67                 }
  68                 break;
  69
  70             default:
  71                 nr5g_fapi_usage(prgname);
  72                 printf("in default");
  73                 return NULL;
  74         }
  75     }
  76
  77     if (cfg_file)
  78         printf("config file: %s\n", cfg_file);
  79     else
  80         nr5g_fapi_usage(prgname);
  81
  82     return cfg_file;
  83 }