blob: b34e70c34037fc27a6c6272b451200e9be554b37 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/* Copy the dynamically-allocated area to an explicitly-sized heap allocation.
Copyright (C) 2017-2023 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
<https://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)
|
