1 /* test-sorted.c
2 *
3 * This test ensures that the ExifTagTable[] array is stored in sorted
4 * order. If that were not so, then it a binary search of the array would
5 * not give correct results.
6 *
7 * Copyright 2009-2022 Dan Fandrich <dan@coneharvesters.com>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 * Boston, MA 02110-1301 USA
23 *
24 * SPDX-License-Identifier: LGPL-2.0-or-later
25 */
26
27 #include <libexif/exif-tag.h>
28 #include <stdio.h>
29 #include <string.h>
30
31 int
main(void)32 main (void)
33 {
34 int rc = 0;
35 unsigned int i, num;
36 ExifTag last = 0, current;
37 const char *name;
38 num = exif_tag_table_count() - 1; /* last entry is a NULL terminator */
39 for (i=0; i < num; ++i) {
40 current = exif_tag_table_get_tag(i);
41 if (current < last) {
42 printf("Tag 0x%04x in ExifTagTable[] is out of order\n",
43 current);
44 rc = 1;
45 }
46 name = exif_tag_table_get_name(i);
47 /* Ensure each tag has a name */
48 if (name == NULL) {
49 printf("Tag 0x%04x has a NULL name\n", current);
50 rc = 1;
51 }
52 /* Ensure each tag's name contains only valid characters */
53 if (strspn(name, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890/") != strlen(name)) {
54 printf("Tag 0x%04x has an invalid name: %s\n", current, name);
55 rc = 1;
56 }
57 last = current;
58 }
59
60 return rc;
61 }
62