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. */
32 void content_foreach_func(ExifEntry *entry, void *callback_data);
content_foreach_func(ExifEntry * entry,void * UNUSED (callback_data))33 void 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). */
50 void data_foreach_func(ExifContent *content, void *callback_data);
data_foreach_func(ExifContent * content,void * callback_data)51 void 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. */
59 void test_parse(const char *filename, void *callback_data);
test_parse(const char * filename,void * callback_data)60 void 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. */
72 typedef void (*test_parse_func) (const char *filename, void *callback_data);
73
74
75 /** Split string at whitespace and call callback with each substring. */
76 void split_ws_string(const char *string, test_parse_func func, void *callback_data);
split_ws_string(const char * string,test_parse_func func,void * callback_data)77 void 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. */
main(const int argc,const char * argv[])107 int 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