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// I didn't take the effort to clean up this file as I did with
// hashtable.c and hashtable.h. It's not really important, tho.
// Instead of this "console hashtable" I should make some test cases
// (which I probably won't be motivated enough to do anyway).
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "hashtable.h"
void print_pair(const char *key, const char *val, void *dummy){
printf("key: %s val: %s\n", key, val);
}
void free_pair(void *key, void *val, void *dummy){
free(key);
free(val);
}
int main(int argc, char **argv){
hashtable_t ht;
if (ht_string_init(&ht)) // HT_NO_MEM
{
fprintf(stderr, "ERROR, couldn't allocate memory!\n");
exit(-1);
}
char buf[100];
while (scanf("%99s", buf) != EOF) {
if (!strcmp(buf, "add")) {
if (scanf("%99s", buf) == EOF) break;
size_t len = strlen(buf) + 1;
char *key = malloc(len);
if (key == NULL) {
fprintf(stderr, "ERROR, couldn't allocate memory!\n");
exit(1);
}
memcpy(key, buf, len);
if (scanf("%99s", buf) == EOF) {
free(key);
break;
}
len = strlen(buf) + 1;
char *val = malloc(len);
if (val == NULL) {
free(key);
fprintf(stderr, "ERROR, couldn't allocate memory!\n");
exit(1);
}
memcpy(val, buf, len);
switch (ht_add(&ht, key, val))
{
case HT_OK:
break;
case HT_NO_MEM:
fprintf(stderr, "ERROR, couldn't allocate memory!\n");
free(key); free(val);
exit(1);
default: // case HT_KEY_PRESENT
printf("Key already present!\n");
}
}
else if (!strcmp(buf, "set")) {
if (scanf("%99s", buf) == EOF) break;
size_t len = strlen(buf) + 1;
char *key = malloc(len);
if (key == NULL) {
fprintf(stderr, "ERROR, couldn't allocate memory!\n");
exit(1);
}
memcpy(key, buf, len);
if (scanf("%99s", buf) == EOF) break;
len = strlen(buf) + 1;
char *val = malloc(len);
if (val == NULL) {
free(key);
fprintf(stderr, "ERROR, couldn't allocate memory!\n");
exit(1);
}
memcpy(val, buf, len);
void *oldkey = NULL, *oldval = NULL;
if (ht_set(&ht, key, val, &oldkey, &oldval) != 0) {
free(key); free(val);
fprintf(stderr, "ERROR, couldn't allocate memory!\n");
exit(1);
}
if (oldval != NULL) {
printf("Replaced: %s\n", (char*) oldval);
free(oldval); free(oldkey);
}
}
else if (!strcmp(buf, "get")) {
if (scanf("%99s", buf) == EOF) break;
void *val;
if (ht_get(&ht, buf, NULL, &val))
printf("No such entry!\n");
else printf("%s\n", (char*) val);
}
else if (!strcmp(buf, "rem")) {
if (scanf("%99s", buf) == EOF) break;
void *storedkey, *val;
if (ht_rem(&ht, buf, &storedkey, &val))
printf("No such entry!\n");
else {
printf("%s\n", (char*) val);
free(val); free(storedkey);
}
}
else if(!strcmp(buf, "entries")) printf("%zu\n", ht.entries);
else if(!strcmp(buf, "print"))
ht_map(&ht, NULL, (void (*)(void*, void*, void*)) &print_pair);
else printf("I have no idea what you're talking about...\n");
}
ht_map_destroy(&ht, NULL,
(void (*)(void*, void*, void*)) &free_pair);
}
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