svn commit: r829357 - /incubator/pdfbox/trunk/src/main/java/org/apache/pdfbox/examples/pdmodel/ExtractMetadata.java

[je...@apache.org]

Author: jeremias
Date: Sat Oct 24 12:44:40 2009
New Revision: 829357

URL: http://svn.apache.org/viewvc?rev=829357&view=rev
Log:
Added an example on how to extract (document-level) XMP metadata.

Added:
    incubator/pdfbox/trunk/src/main/java/org/apache/pdfbox/examples/pdmodel/ExtractMetadata.java   (with props)

Added: incubator/pdfbox/trunk/src/main/java/org/apache/pdfbox/examples/pdmodel/ExtractMetadata.java
URL: http://svn.apache.org/viewvc/incubator/pdfbox/trunk/src/main/java/org/apache/pdfbox/examples/pdmodel/ExtractMetadata.java?rev=829357&view=auto
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--- incubator/pdfbox/trunk/src/main/java/org/apache/pdfbox/examples/pdmodel/ExtractMetadata.java (added)
+++ incubator/pdfbox/trunk/src/main/java/org/apache/pdfbox/examples/pdmodel/ExtractMetadata.java Sat Oct 24 12:44:40 2009
@@ -0,0 +1,150 @@
+/*
+ * 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.pdfbox.examples.pdmodel;
+
+import org.apache.jempbox.xmp.XMPMetadata;
+import org.apache.jempbox.xmp.XMPSchemaBasic;
+import org.apache.jempbox.xmp.XMPSchemaDublinCore;
+import org.apache.jempbox.xmp.XMPSchemaPDF;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
+import org.apache.pdfbox.pdmodel.common.PDMetadata;
+
+import java.text.DateFormat;
+import java.util.Calendar;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * This is an example on how to extract metadata from a PDF document.
+ * <p>
+ * Usage: java org.apache.pdfbox.examples.pdmodel.ExtractDocument &lt;input-pdf&gt;
+ *
+ * @version $Revision$
+ */
+public class ExtractMetadata
+{
+    private ExtractMetadata()
+    {
+        //utility class
+    }
+
+    /**
+     * This is the main method.
+     *
+     * @param args The command line arguments.
+     *
+     * @throws Exception If there is an error parsing the document.
+     */
+    public static void main( String[] args ) throws Exception
+    {
+        if( args.length != 1 )
+        {
+            usage();
+            System.exit(1);
+        }
+        else
+        {
+            PDDocument document = null;
+
+            try
+            {
+                document = PDDocument.load( args[0] );
+                PDDocumentCatalog catalog = document.getDocumentCatalog();
+                PDMetadata meta = catalog.getMetadata();
+                XMPMetadata metadata = meta.exportXMPMetadata();
+
+                XMPSchemaDublinCore dc = metadata.getDublinCoreSchema();
+                if (dc != null)
+                {
+                    display("Title:", dc.getTitle());
+                    display("Description:", dc.getDescription());
+                    list("Creators: ", dc.getCreators());
+                    list("Dates:", dc.getDates());
+                }
+
+                XMPSchemaPDF pdf = metadata.getPDFSchema();
+                if (pdf != null)
+                {
+                    display("Keywords:", pdf.getKeywords());
+                    display("PDF Version:", pdf.getPDFVersion());
+                    display("PDF Producer:", pdf.getProducer());
+                }
+
+                XMPSchemaBasic basic = metadata.getBasicSchema();
+                if (basic != null)
+                {
+                    display("Create Date:", basic.getCreateDate());
+                    display("Modify Date:", basic.getModifyDate());
+                    display("Creator Tool:", basic.getCreatorTool());
+                }
+            }
+            finally
+            {
+                if( document != null )
+                {
+                    document.close();
+                }
+            }
+        }
+    }
+
+    private static void list(String title, List list)
+    {
+        if (list == null)
+        {
+            return;
+        }
+        System.out.println(title);
+        Iterator iter = list.iterator();
+        while (iter.hasNext())
+        {
+            Object o = iter.next();
+            System.out.println("  " + format(o));
+        }
+    }
+
+    private static String format(Object o)
+    {
+        if (o instanceof Calendar)
+        {
+            Calendar cal = (Calendar)o;
+            return DateFormat.getDateInstance().format(cal.getTime());
+        }
+        else
+        {
+            return o.toString();
+        }
+    }
+
+    private static void display(String title, Object value)
+    {
+        if (value != null)
+        {
+            System.out.println(title + " " + format(value));
+        }
+    }
+
+    /**
+     * This will print the usage for this program.
+     */
+    private static void usage()
+    {
+        System.err.println( "Usage: java " + ExtractMetadata.class.getName() + " <input-pdf>" );
+    }
+}

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Propchange: incubator/pdfbox/trunk/src/main/java/org/apache/pdfbox/examples/pdmodel/ExtractMetadata.java
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