Add data size when adding new items to the list

When adding new data to the list, we need exactly how long is the data. So, it's
programer responsibility to calculate the exact size of data to store.

1 files changed, 21 insertions, 5 deletions

diff --git a/src/list.c b/src/list.c
index 87e6960..01a6822 100644
--- a/src/list.c
+++ b/src/list.c
@@ -18,13 +18,15 @@ clist_create()
 
 void
 clist_add(list_t *list,
-          void   *data)
+          void   *data,
+          size_t  data_s)
 {
-  struct list_item_t *item = malloc(sizeof(struct list_item_t));
+	struct list_item_t *item = malloc(sizeof(struct list_item_t));
 
-	void *dest = malloc(sizeof(data)); /* allocates memory like data parameter */
-	memcpy(dest, data, sizeof(data));  /* copies data inside dest              */
+	void *dest = malloc(data_s); /* allocates memory like data parameter */
+	memcpy(dest, data, data_s);  /* copies data inside dest              */
 	item->data = dest;
+	item->data_s = data_s;
 	item->next = NULL;
 
   if (list->first == NULL)
@@ -45,7 +47,8 @@ void clist_add_all(list_t *dest,
 
 	iterator_t i = clist_iterator(other);
 	while (clist_iterator_has_next(i)) {
-		clist_add(dest, clist_iterator_next(&i));
+		list_item_t *item = clist_iterator_next_item(&i);
+		clist_add(dest, item->data, item->data_s);
 	}
 }
 
@@ -98,3 +101,16 @@ clist_iterator_next(iterator_t *i)
 
 	return data;
 }
+
+list_item_t *
+clist_iterator_next_item(iterator_t *i)
+{
+	if (i == NULL || i->current == NULL)
+		return NULL;
+
+	list_item_t *item = i->current;
+	/* `next` can be NULL */
+	i->current = i->current->next;
+
+	return item;
+}