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#include <stdlib.h>
#include <string.h>
#include "word.h"
#include "sdbm.h"
struct word_t *words;
void word_init() {
words = malloc(sizeof(struct word_t) * WORDS_MAX);
memset(words, 0, sizeof(struct word_t) * WORDS_MAX);
}
struct word_t *word_get(char *name) {
unsigned long hash = sdbm(name);
int index = hash % WORDS_MAX;
struct word_t *word = &words[index];
/* Fetch next word if hash doesn't match or the word differ (hash matching first). */
while((word->hash != hash || (word->name && strcmp(name, word->name) != 0)) && word->next) word = word->next;
/* Add new word if the word exists, but both hash and name doesn't match. */
if(word->name && (word->hash != hash || strcmp(name, word->name) != 0)) {
struct word_t *temp_word = malloc(sizeof(struct word_t));
word->next = temp_word;
word = temp_word;
word->name = NULL;
}
if(!word->name) {
word->hash = hash;
word->name = strdup(name);
word->count = 0;
word->next = NULL;
}
return word;
}
void word_free() {
struct word_t *word;
for(int i = 0; i < WORDS_MAX; i++) {
if(words[i].name)
free(words[i].name);
word = words[i].next;
while(word) {
struct word_t *temp = word->next;
free(word->name);
free(word);
word = temp;
}
}
free(words);
}
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