#include <glib.h>
#include "gdupl.h"

/* a thread-safe iterator object -- make the iterator
 * local to your thread and you're safe.  This iterator
 * might be preferable to "foreach" if you want to avoid
 * pass a lot of data about.
 */
GHashIter * g_hash_iter_new(GHashTable *t)
{
       GHashIter *it;
       gpointer key, val;

       if (!t) {
               return NULL;
       }

       it = g_new(GHashIter, 1);
       it->hash = t;
       it->node = NULL;
       g_hash_iter_first(it, &key, &val);
       return it;
}

void g_hash_iter_destroy(GHashIter *it)
{
       g_free(it);
}

gpointer g_hash_iter_first(GHashIter *it, gpointer *key, gpointer *val)
{
       *key = NULL;
       *val = NULL;

       it->i = 0;
       if (it->i < it->hash->size)
               it->node = it->hash->nodes[0];
       while (it->i < it->hash->size) {
               if (it->node) {
                       *key = it->node->key;
                       *val = it->node->value;
                       return *key;
               } else {
                       (it->i)++;
                       it->node = it->hash->nodes[it->i];
               }
       }
       return NULL;
}

gpointer g_hash_iter_next(GHashIter *it, gpointer *key, gpointer *val)
{
       *key = NULL;
       *val = NULL;
       it->node = it->node->next;
       while (1) {
               if (it->node) {
                       *key = it->node->key;
                       *val = it->node->value;
                       return *key;
               } else {
                       it->i++;
                       if (it->i < it->hash->size) {
                               it->node = it->hash->nodes[it->i];
                       } else {
                               break;
                       }
               }
       }
       return NULL;
}