| /* Copy the dynamically-allocated area to an explicitly-sized heap allocation. |
| Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <dynarray.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| bool |
| __libc_dynarray_finalize (struct dynarray_header *list, |
| void *scratch, size_t element_size, |
| struct dynarray_finalize_result *result) |
| { |
| if (__dynarray_error (list)) |
| /* The caller will reported the deferred error. */ |
| return false; |
| |
| size_t used = list->used; |
| |
| /* Empty list. */ |
| if (used == 0) |
| { |
| /* An empty list could still be backed by a heap-allocated |
| array. Free it if necessary. */ |
| if (list->array != scratch) |
| free (list->array); |
| *result = (struct dynarray_finalize_result) { NULL, 0 }; |
| return true; |
| } |
| |
| size_t allocation_size = used * element_size; |
| void *heap_array = malloc (allocation_size); |
| if (heap_array != NULL) |
| { |
| /* The new array takes ownership of the strings. */ |
| if (list->array != NULL) |
| memcpy (heap_array, list->array, allocation_size); |
| if (list->array != scratch) |
| free (list->array); |
| *result = (struct dynarray_finalize_result) |
| { .array = heap_array, .length = used }; |
| return true; |
| } |
| else |
| /* The caller will perform the freeing operation. */ |
| return false; |
| } |
| libc_hidden_def (__libc_dynarray_finalize) |