release/src/router/libexif/test/test-sorted.c

   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 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
  25 #include <libexif/exif-tag.h>
  26 #include <stdio.h>
  27
  28 int
  29 main (void)
  30 {
  31         int rc = 0;
  32         unsigned int i, num;
  33         ExifTag last = 0, current;
  34         num = exif_tag_table_count() - 1; /* last entry is a NULL terminator */
  35         for (i=0; i < num; ++i) {
  36                 current = exif_tag_table_get_tag(i);
  37                 if (current < last) {
  38                         printf("Tag 0x%04x in ExifTagTable[] is out of order\n",
  39                                 current);
  40                         rc = 1;
  41                 }
  42                 if (exif_tag_table_get_name(i) == NULL) {
  43                         printf("Tag 0x%04x has a NULL name\n", current);
  44                         rc = 1;
  45                 }
  46                 last = current;
  47         }
  48
  49         return rc;
  50 }