addtition: slice to array, needs testing

include/arraylist.h

@@ -25,7 +25,7 @@ typedef enum {
 ArrayList *arraylist_init(size_t capacity, size_t elem_size);
 ArrayListErr arraylist_destroy(ArrayList **arr);
 ArrayListErr arraylist_clear(ArrayList *arr);
-ArrayList *arraylist_copy(const ArrayList *arr);
+ArrayList *arraylist_clone(const ArrayList *arr);
 
 size_t arraylist_size(const ArrayList *arr);
 size_t arraylist_capacity(const ArrayList *arr);

src/arraylist.c

@@ -577,3 +577,29 @@ ArrayListErr arrayslice_advance(ArraySlice *slice, size_t n) {
 
     return ARRLIST_OK;
 }
+
+ArrayList *arrayslice_to_arraylist(const ArraySlice *slice) {
+    if (slice == NULL) {
+        return NULL;
+    }
+
+    if (slice->current >= slice->end) {
+        return NULL;
+    }
+
+    ArrayList *new_arr = arraylist_init(
+        arraylist_capacity(slice->arr),
+        slice->arr->elem_size);
+
+    if (new_arr == NULL) {
+        return NULL;
+    }
+
+    memcpy(
+        new_arr->buffer,
+        slice->arr->buffer + (slice->start * slice->arr->elem_size),
+        slice->arr->elem_size * (slice->end - slice->current)
+    );
+
+    return new_arr;
+}