linked_list: Add `linked_list_to_array()`

This function takes the given linked list, and creates a type generic
pointer array from it.

2 files changed, 14 insertions, 0 deletions

diff --git a/linked_list.c b/linked_list.c
index 3c694be..0eeb19b 100644
--- a/linked_list.c
+++ b/linked_list.c
@@ -62,6 +62,19 @@ void cleanup_linked_list(linked_list *node) {
 	}
 }
 
+void **linked_list_to_array(linked_list *node) {
+	void **arr = calloc(linked_list_size(get_tail(node))+1, sizeof(void *));
+	int i = 0;
+
+	for (linked_list *n = get_head(node); n != NULL; n = n->next, ++i) {
+		arr[i] = n->data;
+	}
+
+	arr[i] = NULL;
+
+	return arr;
+}
+
 int linked_list_size(linked_list *tail) {
 	int i = 0;
 	for (linked_list *node = tail; node != NULL; node = node->prev, ++i);
diff --git a/linked_list.h b/linked_list.h
index d18b859..a89578d 100644
--- a/linked_list.h
+++ b/linked_list.h
@@ -14,6 +14,7 @@ extern linked_list *get_tail(linked_list *node);
 extern linked_list *add_node(linked_list **tail, void *data);
 extern void remove_node(linked_list *node);
 extern void cleanup_linked_list(linked_list *node);
+extern void **linked_list_to_array(linked_list *node);
 extern int linked_list_size(linked_list *tail);
 
 #endif