def ensure_capacity_str(arr, new_size, n_chars):
# new_size is right after write index
new_arr = arr
curr_len = len(arr)
curr_num_chars = num_total_chars(arr)
needed_total_chars = getitem_str_offset(arr, new_size - 1) + n_chars
# TODO: corner case test
#print("new alloc", new_size, curr_len, getitem_str_offset(arr, new_size-1), n_chars, curr_num_chars)
if curr_len < new_size or needed_total_chars > curr_num_chars:
new_len = int(2 * curr_len if curr_len < new_size else curr_len)
new_num_chars = int(
2 * curr_num_chars +
n_chars if needed_total_chars > curr_num_chars else curr_num_chars)
new_arr = pre_alloc_string_array(new_len, new_num_chars)
copy_str_arr_slice(new_arr, arr, new_size - 1)
return new_arr
def get_ctor_params(str_arr, idx):
start_offset = getitem_str_offset(str_arr, idx)
data_ptr = get_ctypes_ptr(get_data_ptr_ind(str_arr, start_offset))
size = getitem_str_offset(str_arr, idx + 1) - start_offset
return data_ptr, size
def trim_arr_str(arr, size):
# print("trim size", size, arr[size-1], getitem_str_offset(arr, size))
new_arr = pre_alloc_string_array(
size, np.int64(getitem_str_offset(arr, size)))
copy_str_arr_slice(new_arr, arr, size)
return new_arr