/*
 test_*.c       HSTR test

 Copyright (C) 2014  Martin Dvorak <martin.dvorak@mindforger.com>

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
*/

#include <stdio.h>     /* for printf */
#include <stdlib.h>    /* for exit */
#include <getopt.h>

int main(int argc, char **argv)
{
    int c;
    int digit_optind = 0;

    while (1) {
        int this_option_optind = optind ? optind : 1;
        int option_index = 0;
        static struct option long_options[] = {
                {"add",     required_argument, 0,  0 },
                {"append",  no_argument,       0,  0 },
                {"delete",  required_argument, 0,  0 },
                {"verbose", no_argument,       0,  0 },
                {"create",  required_argument, 0, 'c'},
                {"file",    required_argument, 0,  0 },
                {0,         0,                 0,  0 }
        };

        c = getopt_long(argc, argv, "abc:d:012", long_options, &option_index);
        if (c == -1)
            break;


        switch (c) {
        case 0:
            printf("option %s", long_options[option_index].name);
            if (optarg)
                printf(" with arg %s", optarg);
            printf("\n");
            break;

        case '0':
        case '1':
        case '2':
            if (digit_optind != 0 && digit_optind != this_option_optind)
                printf("digits occur in two different argv-elements.\n");
            digit_optind = this_option_optind;
            printf("option %c\n", c);
            break;

        case 'a':
            printf("option a\n");
            break;

        case 'b':
            printf("option b\n");
            break;

        case 'c':
            printf("option c with value '%s'\n", optarg);
            break;

        case 'd':
            printf("option d with value '%s'\n", optarg);
            break;

        case '?':

            break;

        default:
            printf("?? getopt returned character code 0%o ??\n", c);
        }
    }

    if (optind < argc) {
        printf("non-option ARGV-elements: ");
        while (optind < argc)
            printf("%s ", argv[optind++]);
        printf("\n");
    }

    exit(EXIT_SUCCESS);
}