example.c

   1 /*
   2  * Copyright (c) 2015 Mohamed Aslan <maslan@sce.carleton.ca>
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <string.h>
  20 #include <err.h>
  21
  22 #include <hashtab.h>
  23
  24 int
  25 main(int argc, char **argv)
  26 {
  27         int i;
  28         struct hashtab ht;
  29         char *key, *val;
  30         size_t key_size, val_size;
  31         size_t iter;
  32         char *keys[] = {"hi", "hello", "world", "hello world", "open", "source", "kernel", "hack"};
  33         char *values[] = {"1", "2", "3", "4", "5", "6", "7", "8"};
  34
  35         if (!hashtab_init(&ht, 4, NULL))
  36                 errx(1, "hashtab_init");
  37         for (i = 0; i < 8; i++) {
  38                 hashtab_put(&ht, keys[i], strlen(keys[i]), values[i], strlen(values[i]) + 1);
  39                 printf("%s -> %s\n", keys[i], values[i]);
  40         }
  41         printf("\n");
  42         for (i = 0; i < 8; i++) {
  43                 hashtab_get(&ht, keys[i], strlen(keys[i]), (void **) &val, &val_size);
  44                 printf("%s -> %s\n", keys[i], val);
  45         }
  46
  47         printf("\nloop 1\n");
  48         if (hashtab_first(&ht, &iter)) {
  49                 do {
  50                         hashtab_at(&ht, iter, (void *) &key, &key_size, (void **) &val, &val_size);
  51                         printf("%s -> %s\n", key, val);
  52                 } while (hashtab_next(&ht, &iter));
  53         }
  54         printf("done\n");
  55
  56         printf("loop 2\n");
  57         HASHTAB_FOREACH(ht, iter, key, key_size, val, val_size) {
  58                 hashtab_at(&ht, iter, (void *) &key, &key_size, (void **) &val, &val_size);
  59                 printf("%s -> %s\n", key, val);
  60         }
  61         printf("done\n");
  62
  63
  64         printf("\n");
  65         hashtab_put(&ht, "world", strlen("world"), "10", strlen("10") + 1);
  66         hashtab_get(&ht, "world", strlen("world"), (void **) &val, &val_size);
  67         printf("world -> %s\n", val);
  68         printf("\n");
  69         hashtab_del(&ht, "world", strlen("world"));
  70         if (hashtab_get(&ht, "world", strlen("world"), (void **) &val, &val_size))
  71                 printf("world -> %s\n", val);
  72         else
  73                 printf("world not found\n");
  74         return 0;
  75 }