/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tika.parser.jpeg;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.xml.sax.SAXException;
import com.drew.imaging.jpeg.JpegMetadataReader;
import com.drew.imaging.jpeg.JpegProcessingException;
import com.drew.metadata.Directory;
import com.drew.metadata.MetadataException;
import com.drew.metadata.Tag;
class JpegExtractor {
private final Metadata metadata;
public JpegExtractor(Metadata metadata) {
this.metadata = metadata;
}
public void parse(InputStream stream)
throws IOException, SAXException, TikaException {
try {
com.drew.metadata.Metadata jpegMetadata =
JpegMetadataReader.readMetadata(stream);
Iterator<?> directories = jpegMetadata.getDirectoryIterator();
while (directories.hasNext()) {
Directory directory = (Directory) directories.next();
Iterator<?> tags = directory.getTagIterator();
while (tags.hasNext()) {
Tag tag = (Tag)tags.next();
metadata.set(tag.getTagName(), tag.getDescription());
}
}
} catch (JpegProcessingException e) {
throw new TikaException("Can't read JPEG metadata", e);
} catch (MetadataException e) {
throw new TikaException("Can't read JPEG metadata", e);
}
}
}