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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.commons.imaging.formats.jpeg.exif;
19  
20  import java.io.File;
21  import java.io.IOException;
22  import java.util.List;
23  
24  import org.apache.commons.imaging.ImageReadException;
25  import org.apache.commons.imaging.ImagingTest;
26  import org.apache.commons.imaging.common.bytesource.ByteSource;
27  import org.apache.commons.imaging.common.bytesource.ByteSourceFile;
28  import org.apache.commons.imaging.formats.jpeg.JpegImageParser;
29  
30  public abstract class ExifBaseTest extends ImagingTest {
31  
32      protected static boolean hasExifData(final File file) {
33          if (!file.getName().toLowerCase().endsWith(".jpg")) {
34              return false;
35          }
36  
37          try {
38              final ByteSource byteSource = new ByteSourceFile(file);
39              return new JpegImageParser().hasExifSegment(byteSource);
40          } catch (final Exception e) {
41              return false;
42          }
43      }
44  
45      private static final ImageFilter HAS_EXIF_IMAGE_FILTER = new ImageFilter() {
46          @Override
47          public boolean accept(final File file) throws IOException, ImageReadException {
48              return hasExifData(file);
49          }
50      };
51  
52      private static final ImageFilter JPEG_IMAGE_FILTER = new ImageFilter() {
53          @Override
54          public boolean accept(final File file) throws IOException, ImageReadException {
55              return file.getName().toLowerCase().endsWith(".jpg");
56          }
57      };
58  
59      protected File getImageWithExifData() throws IOException,
60              ImageReadException {
61          return getTestImage(HAS_EXIF_IMAGE_FILTER);
62      }
63  
64      protected static List<File> getImagesWithExifData() throws IOException,
65              ImageReadException {
66          return getTestImages(HAS_EXIF_IMAGE_FILTER);
67      }
68  
69      protected static List<File> getJpegImages() throws IOException, ImageReadException {
70          return getTestImages(JPEG_IMAGE_FILTER);
71      }
72  
73  }