Sample programs for writing properties using HPSF added
git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@353348 13f79535-47bb-0310-9956-ffa450edef68
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/*
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* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2000 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" must
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* not be used to endorse or promote products derived from this
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* software without prior written permission. For written
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* permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
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* nor may "Apache" appear in their name, without prior written
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* permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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package org.apache.poi.hpsf.examples;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.HashMap;
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import java.util.Map;
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import org.apache.poi.hpsf.HPSFRuntimeException;
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import org.apache.poi.hpsf.MarkUnsupportedException;
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import org.apache.poi.hpsf.MutablePropertySet;
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import org.apache.poi.hpsf.MutableSection;
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import org.apache.poi.hpsf.NoPropertySetStreamException;
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import org.apache.poi.hpsf.PropertySet;
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import org.apache.poi.hpsf.PropertySetFactory;
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import org.apache.poi.hpsf.UnexpectedPropertySetTypeException;
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import org.apache.poi.hpsf.Util;
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import org.apache.poi.hpsf.Variant;
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import org.apache.poi.hpsf.WritingNotSupportedException;
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import org.apache.poi.hpsf.wellknown.PropertyIDMap;
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import org.apache.poi.poifs.eventfilesystem.POIFSReader;
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import org.apache.poi.poifs.eventfilesystem.POIFSReaderEvent;
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import org.apache.poi.poifs.eventfilesystem.POIFSReaderListener;
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import org.apache.poi.poifs.filesystem.DirectoryEntry;
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import org.apache.poi.poifs.filesystem.DocumentInputStream;
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import org.apache.poi.poifs.filesystem.POIFSDocumentPath;
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import org.apache.poi.poifs.filesystem.POIFSFileSystem;
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/**
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* <p>This class is a sample application which shows how to write or modify the
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* author and title property of an OLE 2 document. This could be done in two
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* different ways:</p>
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*
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* <ul>
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*
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* <li><p>The first approach is to open the OLE 2 file as a POI filesystem
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* (see class {@link POIFSFileSystem}), read the summary information property
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* set (see classes {@link SummaryInformation} and {@link PropertySet}), write
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* the author and title properties into it and write the property set back into
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* the POI filesystem.</p></li>
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*
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* <li><p>The second approach does not modify the original POI filesystem, but
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* instead creates a new one. All documents from the original POIFS are copied
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* to the destination POIFS, except for the summary information stream. The
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* latter is modified by setting the author and title property before writing
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* it to the destination POIFS. It there are several summary information streams
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* in the original POIFS - e.g. in subordinate directories - they are modified
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* just the same.</p></li>
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*
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* </ul>
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*
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* <p>This sample application takes the second approach. It expects the name of
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* the existing POI filesystem's name as its first command-line parameter and
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* the name of the output POIFS as the second command-line argument. The
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* program then works as described above: It copies nearly all documents
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* unmodified from the input POI filesystem to the output POI filesystem. If it
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* encounters a summary information stream it reads its properties. Then it sets
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* the "author" and "title" properties to new values and writes the modified
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* summary information stream into the output file.</p>
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*
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* <p>Further explanations can be found in the HPSF HOW-TO.</p>
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*
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* @author Rainer Klute (klute@rainer-klute.de)
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* @version $Id$
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* @since 2003-09-01
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*/
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public class WriteAuthorAndTitle
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{
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/**
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* <p>Runs the example program.</p>
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*
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* @param args Command-line arguments. The first command-line argument must
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* be the name of a POI filesystem to read.
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* @throws IOException if any I/O exception occurs.
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*/
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public static void main(final String[] args) throws IOException
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{
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/* Check whether we have exactly two command-line arguments. */
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if (args.length != 2)
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{
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System.err.println("Usage: " + WriteAuthorAndTitle.class.getName() +
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"originPOIFS destinationPOIFS");
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System.exit(1);
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}
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/* Read the names of the origin and destination POI filesystems. */
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final String srcName = args[0];
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final String dstName = args[1];
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/* Read the origin POIFS using the eventing API. The real work is done
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* in the class ModifySICopyTheRest which is registered here as a
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* POIFSReader. */
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final POIFSReader r = new POIFSReader();
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final ModifySICopyTheRest msrl = new ModifySICopyTheRest(dstName);
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r.registerListener(msrl);
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r.read(new FileInputStream(srcName));
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/* Write the new POIFS to disk. */
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msrl.close();
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}
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/**
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* <p>This class does all the work. As its name implies it modifies a
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* summary information property set and copies everything else unmodified
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* to the destination POI filesystem. Since an instance of it is registered
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* as a {@link POIFSReader} its method {@link
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* #processPOIFSReaderEvent(POIFSReaderEvent) is called for each document in
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* the origin POIFS.</p>
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*/
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static class ModifySICopyTheRest implements POIFSReaderListener
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{
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String dstName;
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OutputStream out;
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POIFSFileSystem poiFs;
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/**
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* <p>The constructor of a {@link ModifySICopyTheRest} instance creates
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* the target POIFS. It also stores the name of the file the POIFS will
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* be written to once it is complete.</p>
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*
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* @param dstName The name of the disk file the destination POIFS is to
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* be written to.
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* @throws FileNotFoundException
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*/
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public ModifySICopyTheRest(final String dstName)
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{
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this.dstName = dstName;
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poiFs = new POIFSFileSystem();
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}
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/**
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* <p>The method is called by POI's eventing API for each file in the
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* origin POIFS.</p>
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*/
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public void processPOIFSReaderEvent(final POIFSReaderEvent event)
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{
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/* The following declarations are shortcuts for accessing the
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* "event" object. */
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final POIFSDocumentPath path = event.getPath();
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final String name = event.getName();
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final DocumentInputStream stream = event.getStream();
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Throwable t = null;
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try
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{
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/* Find out whether the current document is a property set
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* stream or not. */
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if (PropertySet.isPropertySetStream(stream))
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{
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/* Yes, the current document is a property set stream.
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* Let's create a PropertySet instance from it. */
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PropertySet ps = null;
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try
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{
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ps = PropertySetFactory.create(stream);
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}
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catch (NoPropertySetStreamException ex)
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{
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/* This exception will not be thrown because we already
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* checked above. */
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}
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/* Now we know that we really have a property set. The next
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* step is to find out whether it is a summary information
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* or not. */
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if (ps.isSummaryInformation())
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/* Yes, it is a summary information. We will modify it
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* and write the result to the destination POIFS. */
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editSI(poiFs, path, name, ps);
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else
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/* No, it is not a summary information. We don't care
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* about its internals and copy it unmodified to the
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* destination POIFS. */
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copy(poiFs, path, name, ps);
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}
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else
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/* No, the current document is not a property set stream. We
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* copy it unmodified to the destination POIFS. */
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copy(poiFs, event.getPath(), event.getName(), stream);
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}
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catch (MarkUnsupportedException ex)
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{
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t = ex;
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}
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catch (IOException ex)
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{
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t = ex;
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}
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catch (WritingNotSupportedException ex)
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{
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t = ex;
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}
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/* According to the definition of the processPOIFSReaderEvent method
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* we cannot pass checked exceptions to the caller. The following
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* lines check whether a checked exception occured and throws an
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* unchecked exception. The message of that exception is that of
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* the underlying checked exception. */
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if (t != null)
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{
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throw new HPSFRuntimeException
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("Could not read file \"" + path + "/" + name +
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"\". Reason: " + Util.toString(t));
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}
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}
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/**
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* <p>Receives a summary information property set modifies (or creates)
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* its "author" and "title" properties and writes the result under the
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* same path and name as the origin to a destination POI filesystem.</p>
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*
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* @param poiFs The POI filesystem to write to.
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* @param path The original (and destination) stream's path.
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* @param name The original (and destination) stream's name.
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* @param si The property set. It should be a summary information
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* property set.
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*/
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public void editSI(final POIFSFileSystem poiFs,
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final POIFSDocumentPath path,
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final String name,
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final PropertySet si)
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throws WritingNotSupportedException, IOException
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{
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/* Get the directory entry for the target stream. */
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final DirectoryEntry de = getPath(poiFs, path);
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/* Create a mutable property set as a copy of the original read-only
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* property set. */
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final MutablePropertySet mps = new MutablePropertySet(si);
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/* Retrieve the section containing the properties to modify. A
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* summary information property set contains exactly one section. */
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final MutableSection s =
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(MutableSection) mps.getSections().get(0);
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/* Set the properties. */
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s.setProperty(PropertyIDMap.PID_AUTHOR, Variant.VT_LPSTR,
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"Rainer Klute");
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s.setProperty(PropertyIDMap.PID_TITLE, Variant.VT_LPWSTR,
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"Test");
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/* Create an input stream containing the bytes the property set
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* stream consists of. */
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final InputStream pss = mps.toInputStream();
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/* Write the property set stream to the POIFS. */
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de.createDocument(name, pss);
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}
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/**
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* <p>Writes a {@link PropertySet} to a POI filesystem. This method is
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* simpler than {@link #editSI} because the origin property set has just
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* to be copied.</p>
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*
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* @param poiFs The POI filesystem to write to.
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* @param path The file's path in the POI filesystem.
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* @param name The file's name in the POI filesystem.
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* @param ps The property set to write.
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*/
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public void copy(final POIFSFileSystem poiFs,
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final POIFSDocumentPath path,
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final String name,
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final PropertySet ps)
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throws WritingNotSupportedException, IOException
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{
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final DirectoryEntry de = getPath(poiFs, path);
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final MutablePropertySet mps = new MutablePropertySet(ps);
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de.createDocument(name, mps.toInputStream());
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}
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/**
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* <p>Copies the bytes from a {@link DocumentInputStream} to a new
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* stream in a POI filesystem.</p>
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*
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* @param poiFs The POI filesystem to write to.
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* @param path The source document's path.
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* @param stream The stream containing the source document.
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*/
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public void copy(final POIFSFileSystem poiFs,
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final POIFSDocumentPath path,
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final String name,
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final DocumentInputStream stream) throws IOException
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{
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final DirectoryEntry de = getPath(poiFs, path);
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final ByteArrayOutputStream out = new ByteArrayOutputStream();
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int c;
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while ((c = stream.read()) != -1)
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out.write(c);
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stream.close();
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out.close();
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final InputStream in =
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new ByteArrayInputStream(out.toByteArray());
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de.createDocument(name, in);
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}
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/**
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* <p>Writes the POI file system to a disk file.</p>
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*
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* @throws FileNotFoundException
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* @throws IOException
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*/
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public void close() throws FileNotFoundException, IOException
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{
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out = new FileOutputStream(dstName);
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poiFs.writeFilesystem(out);
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out.close();
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}
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/** Contains the directory paths that have already been created in the
|
||||||
|
* output POI filesystem and maps them to their corresponding
|
||||||
|
* {@link org.apache.poi.poifs.filesystem.DirectoryNode}s. */
|
||||||
|
private final Map paths = new HashMap();
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* <p>Ensures that the directory hierarchy for a document in a POI
|
||||||
|
* fileystem is in place. When a document is to be created somewhere in
|
||||||
|
* a POI filesystem its directory must be created first. This method
|
||||||
|
* creates all directories between the POI filesystem root and the
|
||||||
|
* directory the document should belong to which do not yet exist.</p>
|
||||||
|
*
|
||||||
|
* <p>Unfortunately POI does not offer a simple method to interrogate
|
||||||
|
* the POIFS whether a certain child node (file or directory) exists in
|
||||||
|
* a directory. However, since we always start with an empty POIFS which
|
||||||
|
* contains the root directory only and since each directory in the
|
||||||
|
* POIFS is created by this method we can maintain the POIFS's directory
|
||||||
|
* hierarchy ourselves: The {@link DirectoryEntry} of each directory
|
||||||
|
* created is stored in a {@link Map}. The directories' path names map
|
||||||
|
* to the corresponding {@link DirectoryEntry} instances.</p>
|
||||||
|
*
|
||||||
|
* @param poiFs The POI filesystem the directory hierarchy is created
|
||||||
|
* in, if needed.
|
||||||
|
* @param path The document's path. This method creates those directory
|
||||||
|
* components of this hierarchy which do not yet exist.
|
||||||
|
* @return The directory entry of the document path's parent. The caller
|
||||||
|
* should use this {@link DirectoryEntry} to create documents in it.
|
||||||
|
*/
|
||||||
|
public DirectoryEntry getPath(final POIFSFileSystem poiFs,
|
||||||
|
final POIFSDocumentPath path)
|
||||||
|
{
|
||||||
|
try
|
||||||
|
{
|
||||||
|
/* Check whether this directory has already been created. */
|
||||||
|
final String s = path.toString();
|
||||||
|
DirectoryEntry de = (DirectoryEntry) paths.get(s);
|
||||||
|
if (de != null)
|
||||||
|
/* Yes: return the corresponding DirectoryEntry. */
|
||||||
|
return de;
|
||||||
|
|
||||||
|
/* No: We have to create the directory - or return the root's
|
||||||
|
* DirectoryEntry. */
|
||||||
|
int l = path.length();
|
||||||
|
if (l == 0)
|
||||||
|
/* Get the root directory. It does not have to be created
|
||||||
|
* since it always exists in a POIFS. */
|
||||||
|
de = poiFs.getRoot();
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* Create a subordinate directory. The first step is to
|
||||||
|
* ensure that the parent directory exists: */
|
||||||
|
de = getPath(poiFs, path.getParent());
|
||||||
|
/* Now create the target directory: */
|
||||||
|
de = de.createDirectory(path.getComponent
|
||||||
|
(path.length() - 1));
|
||||||
|
}
|
||||||
|
paths.put(s, de);
|
||||||
|
return de;
|
||||||
|
}
|
||||||
|
catch (IOException ex)
|
||||||
|
{
|
||||||
|
/* This exception will be thrown if the directory already
|
||||||
|
* exists. However, since we have full control about directory
|
||||||
|
* creation we can ensure that this will never happen. */
|
||||||
|
ex.printStackTrace(System.err);
|
||||||
|
throw new RuntimeException(ex);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
139
src/examples/src/org/apache/poi/hpsf/examples/WriteTitle.java
Normal file
139
src/examples/src/org/apache/poi/hpsf/examples/WriteTitle.java
Normal file
@ -0,0 +1,139 @@
|
|||||||
|
/*
|
||||||
|
* ====================================================================
|
||||||
|
* The Apache Software License, Version 1.1
|
||||||
|
*
|
||||||
|
* Copyright (c) 2000 The Apache Software Foundation. All rights
|
||||||
|
* reserved.
|
||||||
|
*
|
||||||
|
* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification, are permitted provided that the following conditions
|
||||||
|
* are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer.
|
||||||
|
*
|
||||||
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in
|
||||||
|
* the documentation and/or other materials provided with the
|
||||||
|
* distribution.
|
||||||
|
*
|
||||||
|
* 3. The end-user documentation included with the redistribution,
|
||||||
|
* if any, must include the following acknowledgment:
|
||||||
|
* "This product includes software developed by the
|
||||||
|
* Apache Software Foundation (http://www.apache.org/)."
|
||||||
|
* Alternately, this acknowledgment may appear in the software itself,
|
||||||
|
* if and wherever such third-party acknowledgments normally appear.
|
||||||
|
*
|
||||||
|
* 4. The names "Apache" and "Apache Software Foundation" must
|
||||||
|
* not be used to endorse or promote products derived from this
|
||||||
|
* software without prior written permission. For written
|
||||||
|
* permission, please contact apache@apache.org.
|
||||||
|
*
|
||||||
|
* 5. Products derived from this software may not be called "Apache",
|
||||||
|
* nor may "Apache" appear in their name, without prior written
|
||||||
|
* permission of the Apache Software Foundation.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
|
||||||
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||||
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||||
|
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
|
||||||
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||||
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||||
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||||
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||||||
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||||
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
||||||
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||||
|
* SUCH DAMAGE.
|
||||||
|
* ====================================================================
|
||||||
|
*
|
||||||
|
* This software consists of voluntary contributions made by many
|
||||||
|
* individuals on behalf of the Apache Software Foundation. For more
|
||||||
|
* information on the Apache Software Foundation, please see
|
||||||
|
* <http://www.apache.org/>.
|
||||||
|
*/
|
||||||
|
package org.apache.poi.hpsf.examples;
|
||||||
|
|
||||||
|
import java.io.FileOutputStream;
|
||||||
|
import java.io.IOException;
|
||||||
|
import java.io.InputStream;
|
||||||
|
|
||||||
|
import org.apache.poi.hpsf.MutableProperty;
|
||||||
|
import org.apache.poi.hpsf.MutablePropertySet;
|
||||||
|
import org.apache.poi.hpsf.MutableSection;
|
||||||
|
import org.apache.poi.hpsf.SummaryInformation;
|
||||||
|
import org.apache.poi.hpsf.Variant;
|
||||||
|
import org.apache.poi.hpsf.WritingNotSupportedException;
|
||||||
|
import org.apache.poi.hpsf.wellknown.PropertyIDMap;
|
||||||
|
import org.apache.poi.hpsf.wellknown.SectionIDMap;
|
||||||
|
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* <p>This class is a simple sample application showing how to create a property
|
||||||
|
* set and write it to disk.</p>
|
||||||
|
*
|
||||||
|
* @author Rainer Klute (klute@rainer-klute.de)
|
||||||
|
* @version $Id$
|
||||||
|
* @since 2003-09-12
|
||||||
|
*/
|
||||||
|
public class WriteTitle
|
||||||
|
{
|
||||||
|
/**
|
||||||
|
* <p>Runs the example program.</p>
|
||||||
|
*
|
||||||
|
* @param args Command-line arguments. The first and only command-line
|
||||||
|
* argument is the name of the POI file system to create.
|
||||||
|
* @throws IOException if any I/O exception occurs.
|
||||||
|
* @throws WritingNotSupportedException if HPSF does not (yet) support
|
||||||
|
* writing a certain property type.
|
||||||
|
*/
|
||||||
|
public static void main(final String[] args)
|
||||||
|
throws WritingNotSupportedException, IOException
|
||||||
|
{
|
||||||
|
/* Check whether we have exactly one command-line argument. */
|
||||||
|
if (args.length != 1)
|
||||||
|
{
|
||||||
|
System.err.println("Usage: " + WriteTitle.class.getName() +
|
||||||
|
"destinationPOIFS");
|
||||||
|
System.exit(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
final String fileName = args[0];
|
||||||
|
final POIFSFileSystem poiFs = new POIFSFileSystem();
|
||||||
|
|
||||||
|
/* Create a mutable property set. Initially it contains a single section
|
||||||
|
* with no properties. */
|
||||||
|
final MutablePropertySet mps = new MutablePropertySet();
|
||||||
|
|
||||||
|
/* Retrieve the section the property set already contains. */
|
||||||
|
final MutableSection ms = (MutableSection) mps.getSections().get(0);
|
||||||
|
|
||||||
|
/* Turn the property set into a summary information property. This is
|
||||||
|
* done by setting the format ID of its first section to
|
||||||
|
* SectionIDMap.SUMMARY_INFORMATION_ID. */
|
||||||
|
ms.setFormatID(SectionIDMap.SUMMARY_INFORMATION_ID);
|
||||||
|
|
||||||
|
/* Create an empty property. */
|
||||||
|
final MutableProperty p = new MutableProperty();
|
||||||
|
|
||||||
|
/* Fill the property with appropriate settings so that it specifies the
|
||||||
|
* document's title. */
|
||||||
|
p.setID(PropertyIDMap.PID_TITLE);
|
||||||
|
p.setType(Variant.VT_LPWSTR);
|
||||||
|
p.setValue("Sample title");
|
||||||
|
|
||||||
|
/* For writing the property set into a POI file system it has to be
|
||||||
|
* handed over to the POIFS.createDocument() method as an input stream
|
||||||
|
* which produces the bytes making out the property set stream. */
|
||||||
|
final InputStream is = mps.toInputStream();
|
||||||
|
|
||||||
|
/* Create the summary information property set in the POI file
|
||||||
|
* system. It is given the default name most (if not all) summary
|
||||||
|
* information property sets have. */
|
||||||
|
poiFs.createDocument(is, SummaryInformation.DEFAULT_STREAM_NAME);
|
||||||
|
|
||||||
|
/* Write the whole POI file system to a disk file. */
|
||||||
|
poiFs.writeFilesystem(new FileOutputStream(fileName));
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user