/*
* 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.
*/
/* $Id: ExtractMetadataPacket.java 606567 2007-12-23 15:52:49Z jeremias $ */
package xmp;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import javax.xml.transform.TransformerException;
import org.apache.xmlgraphics.xmp.Metadata;
import org.apache.xmlgraphics.xmp.XMPArray;
import org.apache.xmlgraphics.xmp.XMPConstants;
import org.apache.xmlgraphics.xmp.XMPPacketParser;
import org.apache.xmlgraphics.xmp.XMPProperty;
/**
* This example shows how to parse an XMP packet from an arbitrary file.
*/
public class ExtractMetadataPacket {
private static void parseMetadata() throws IOException, TransformerException {
URL url = ExtractMetadataPacket.class.getResource("xmp-sandbox.fop.trunk.pdf");
InputStream in = url.openStream();
try {
Metadata meta = XMPPacketParser.parse(in);
if (meta == null) {
System.err.println("No XMP packet found!");
} else {
dumpSomeMetadata(meta);
}
} finally {
in.close();
}
}
private static void dumpSomeMetadata(Metadata meta) {
XMPProperty prop;
prop = meta.getProperty(XMPConstants.DUBLIN_CORE_NAMESPACE, "creator");
if (prop != null) {
XMPArray array;
array = prop.getArrayValue();
for (int i = 0, c = array.getSize(); i < c; i++) {
System.out.println("Creator: " + array.getValue(i));
}
}
prop = meta.getProperty(XMPConstants.DUBLIN_CORE_NAMESPACE, "title");
if (prop != null) {
System.out.println("Title: " + prop.getValue());
}
prop = meta.getProperty(XMPConstants.XMP_BASIC_NAMESPACE, "CreateDate");
if (prop != null) {
System.out.println("Creation Date: " + prop.getValue());
}
prop = meta.getProperty(XMPConstants.XMP_BASIC_NAMESPACE, "CreatorTool");
if (prop != null) {
System.out.println("Creator Tool: " + prop.getValue());
}
prop = meta.getProperty(XMPConstants.ADOBE_PDF_NAMESPACE, "Producer");
if (prop != null) {
System.out.println("Producer: " + prop.getValue());
}
prop = meta.getProperty(XMPConstants.ADOBE_PDF_NAMESPACE, "PDFVersion");
if (prop != null) {
System.out.println("PDF version: " + prop.getValue());
}
}
/**
* Command-line interface.
* @param args the command-line arguments
*/
public static void main(String[] args) {
try {
parseMetadata();
} catch (Exception e) {
e.printStackTrace();
}
}
}