/** \file test-parse.c
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* \brief Completely parse all files given on the command line.
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*
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* Copyright (C) 2007 Hans Ulrich Niedermann <gp@n-dimensional.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#include "libexif/exif-data.h"
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#include "libexif/exif-system.h"
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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/** Callback function handling an ExifEntry. */
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void content_foreach_func(ExifEntry *entry, void *callback_data);
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void content_foreach_func(ExifEntry *entry, void *UNUSED(callback_data))
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{
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char buf[2000];
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exif_entry_get_value(entry, buf, sizeof(buf));
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printf(" Entry %p: %s (%s)\n"
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" Size, Comps: %d, %d\n"
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" Value: %s\n",
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entry,
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exif_tag_get_name(entry->tag),
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exif_format_get_name(entry->format),
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entry->size,
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(int)(entry->components),
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exif_entry_get_value(entry, buf, sizeof(buf)));
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}
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/** Callback function handling an ExifContent (corresponds 1:1 to an IFD). */
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void data_foreach_func(ExifContent *content, void *callback_data);
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void data_foreach_func(ExifContent *content, void *callback_data)
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{
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printf(" Content %p: ifd=%d\n", content, exif_content_get_ifd(content));
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exif_content_foreach_entry(content, content_foreach_func, callback_data);
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}
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/** Run EXIF parsing test on the given file. */
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void test_parse(const char *filename, void *callback_data);
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void test_parse(const char *filename, void *callback_data)
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{
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ExifData *d;
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printf("File %s\n", filename);
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d = exif_data_new_from_file(filename);
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exif_data_foreach_content(d, data_foreach_func, callback_data);
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exif_data_unref(d);
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}
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/** Callback function prototype for string parsing. */
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typedef void (*test_parse_func) (const char *filename, void *callback_data);
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/** Split string at whitespace and call callback with each substring. */
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void split_ws_string(const char *string, test_parse_func func, void *callback_data);
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void split_ws_string(const char *string, test_parse_func func, void *callback_data)
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{
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const char *start = string;
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const char *p = start;
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for (;;) {
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if (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r' || *p == '\0' ) {
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size_t len = p-start;
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if (len > 0) {
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/* emulate strndup */
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char *str = malloc(1+len);
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if (str) {
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memcpy(str, start, len);
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str[len] = '\0';
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func(str, callback_data);
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free(str);
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start = p+1;
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}
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} else {
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start = p+1;
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}
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}
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if (*p == '\0') {
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break;
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}
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p++;
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}
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}
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/** Main program. */
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int main(const int argc, const char *argv[])
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{
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int i;
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void *callback_data = NULL;
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const char *envar = getenv("TEST_IMAGES");
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if (envar) {
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split_ws_string(envar, test_parse, callback_data);
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}
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for (i=1; i<argc; i++) {
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test_parse(argv[i], callback_data);
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}
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return 0;
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}
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