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/* exif-mnote.c
*
* Copyright 2002 Lutz Mueller <lutz@users.sourceforge.net>
*
* This 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 of the License, or (at your option) any later version.
*
* This 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 this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
* SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <libexif/exif-data.h>
static const char *strornull(const char *ptr) {
if (!ptr)
return "(none)";
return ptr;
}
static int
test_exif_data (ExifData *d)
{
unsigned int i, c;
char v[1024], *p;
ExifMnoteData *md;
printf("Byte order: %s\n",
exif_byte_order_get_name (exif_data_get_byte_order (d)));
printf("Parsing maker note...\n");
md = exif_data_get_mnote_data (d);
if (!md) {
fprintf (stderr, "Could not parse maker note!\n");
exif_data_unref (d);
return 1;
}
printf("Increasing ref-count...\n");
exif_mnote_data_ref (md);
printf("Decreasing ref-count...\n");
exif_mnote_data_unref (md);
printf("Counting entries...\n");
c = exif_mnote_data_count (md);
printf("Found %i entries.\n", c);
for (i = 0; i < c; i++) {
printf("Dumping entry number %i...\n", i);
printf(" Name: '%s'\n",
strornull(exif_mnote_data_get_name (md, i)));
printf(" Title: '%s'\n",
strornull(exif_mnote_data_get_title (md, i)));
printf(" Description: '%s'\n",
strornull(exif_mnote_data_get_description (md, i)));
p = exif_mnote_data_get_value (md, i, v, sizeof (v));
if (p) { printf(" Value: '%s'\n", v); }
}
return 0;
}
int
main (int argc, char **argv)
{
ExifData *d;
unsigned int buf_size;
unsigned char *buf;
int r;
if (argc <= 1) {
fprintf (stderr, "You need to supply a filename!\n");
return 1;
}
printf("Loading '%s'...\n", argv[1]);
d = exif_data_new_from_file (argv[1]);
if (!d) {
fprintf (stderr, "Could not load data from '%s'!\n", argv[1]);
return 1;
}
printf("Loaded '%s'.\n", argv[1]);
printf("######### Test 1 #########\n");
r = test_exif_data (d);
if (r) return r;
exif_data_save_data (d, &buf, &buf_size);
exif_data_unref (d);
d = exif_data_new_from_data (buf, buf_size);
free (buf);
if (!d) {
fprintf (stderr, "Could not load data from buf!\n");
return 1;
}
printf ("######### Test 2 #########\n");
r = test_exif_data (d);
exif_data_unref (d);
if (r) return r;
printf ("Test successful!\n");
return 0;
}
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