1/** \file test-parse.c
2 * \brief Completely parse all files given on the command line.
3 *
4 * Copyright (C) 2007 Hans Ulrich Niedermann <gp@n-dimensional.de>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA  02110-1301  USA.
20 *
21 */
22
23#include "libexif/exif-data.h"
24#include "libexif/exif-system.h"
25
26#include <string.h>
27#include <stdio.h>
28#include <stdlib.h>
29
30
31/** Callback function handling an ExifEntry. */
32void content_foreach_func(ExifEntry *entry, void *callback_data);
33void content_foreach_func(ExifEntry *entry, void *UNUSED(callback_data))
34{
35  char buf[2000];
36  exif_entry_get_value(entry, buf, sizeof(buf));
37  printf("    Entry %p: %s (%s)\n"
38	 "      Size, Comps: %d, %d\n"
39	 "      Value: %s\n",
40	 entry,
41	 exif_tag_get_name(entry->tag),
42	 exif_format_get_name(entry->format),
43	 entry->size,
44	 (int)(entry->components),
45	 exif_entry_get_value(entry, buf, sizeof(buf)));
46}
47
48
49/** Callback function handling an ExifContent (corresponds 1:1 to an IFD). */
50void data_foreach_func(ExifContent *content, void *callback_data);
51void data_foreach_func(ExifContent *content, void *callback_data)
52{
53  printf("  Content %p: ifd=%d\n", content, exif_content_get_ifd(content));
54  exif_content_foreach_entry(content, content_foreach_func, callback_data);
55}
56
57
58/** Run EXIF parsing test on the given file. */
59void test_parse(const char *filename, void *callback_data);
60void test_parse(const char *filename, void *callback_data)
61{
62  ExifData *d;
63  printf("File %s\n", filename);
64
65  d = exif_data_new_from_file(filename);
66  exif_data_foreach_content(d, data_foreach_func, callback_data);
67  exif_data_unref(d);
68}
69
70
71/** Callback function prototype for string parsing. */
72typedef void (*test_parse_func) (const char *filename, void *callback_data);
73
74
75/** Split string at whitespace and call callback with each substring. */
76void split_ws_string(const char *string, test_parse_func func, void *callback_data);
77void split_ws_string(const char *string, test_parse_func func, void *callback_data)
78{
79  const char *start = string;
80  const char *p = start;
81  for (;;) {
82    if (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r' || *p == '\0' ) {
83      size_t len = p-start;
84      if (len > 0) {
85	/* emulate strndup */
86	char *str = malloc(1+len);
87	if (str) {
88	  memcpy(str, start, len);
89	  str[len] = '\0';
90	  func(str, callback_data);
91	  free(str);
92	  start = p+1;
93	}
94      } else {
95	start = p+1;
96      }
97    }
98    if (*p == '\0') {
99      break;
100    }
101    p++;
102  }
103}
104
105
106/** Main program. */
107int main(const int argc, const char *argv[])
108{
109  int i;
110  void *callback_data = NULL;
111
112  const char *envar = getenv("TEST_IMAGES");
113  if (envar) {
114    split_ws_string(envar, test_parse, callback_data);
115  }
116
117  for (i=1; i<argc; i++) {
118    test_parse(argv[i], callback_data);
119  }
120
121  return 0;
122}
123