//
// JODConverter - Java OpenDocument Converter
// Copyright (C) 2004-2007 - Mirko Nasato <mirko@artofsolving.com>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
// http://www.gnu.org/copyleft/lesser.html
//
package com.artofsolving.jodconverter.openoffice.converter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.io.IOUtils;
import com.artofsolving.jodconverter.DocumentConverter;
import com.artofsolving.jodconverter.DocumentFormat;
import com.artofsolving.jodconverter.DocumentFormatRegistry;
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeException;
import com.sun.star.frame.XComponentLoader;
import com.sun.star.frame.XStorable;
import com.sun.star.lang.XComponent;
import com.sun.star.lib.uno.adapter.ByteArrayToXInputStreamAdapter;
import com.sun.star.lib.uno.adapter.OutputStreamToXOutputStreamAdapter;
import com.sun.star.uno.UnoRuntime;
/**
* Alternative stream-based {@link DocumentConverter} implementation.
* <p>
* This implementation passes document data to and from the OpenOffice.org
* service as streams.
* <p>
* Stream-based conversions are slower than the default file-based ones (provided
* by {@link OpenOfficeDocumentConverter}) but they allow to run the OpenOffice.org
* service on a different machine, or under a different system user on the same
* machine without file permission problems.
* <p>
* <b>Warning!</b> There is a <a href="http://www.openoffice.org/issues/show_bug.cgi?id=75519">bug</a>
* in OpenOffice.org 2.2.0 that causes some input formats, including Word and Excel, not to work when
* using stream-base conversions.
*
* @see OpenOfficeDocumentConverter
*/
public class StreamOpenOfficeDocumentConverter extends AbstractOpenOfficeDocumentConverter {
public StreamOpenOfficeDocumentConverter(OpenOfficeConnection connection) {
super(connection);
}
public StreamOpenOfficeDocumentConverter(OpenOfficeConnection connection, DocumentFormatRegistry formatRegistry) {
super(connection, formatRegistry);
}
protected void convertInternal(File inputFile, DocumentFormat inputFormat, File outputFile, DocumentFormat outputFormat) {
InputStream inputStream = null;
OutputStream outputStream = null;
try {
inputStream = new FileInputStream(inputFile);
outputStream = new FileOutputStream(outputFile);
convert(inputStream, inputFormat, outputStream, outputFormat);
} catch (FileNotFoundException fileNotFoundException) {
throw new IllegalArgumentException(fileNotFoundException.getMessage());
} finally {
IOUtils.closeQuietly(inputStream);
IOUtils.closeQuietly(outputStream);
}
}
protected void convertInternal(InputStream inputStream, DocumentFormat inputFormat, OutputStream outputStream, DocumentFormat outputFormat) {
Map/*<String,Object>*/ exportOptions = outputFormat.getExportOptions(inputFormat.getFamily());
try {
synchronized (openOfficeConnection) {
loadAndExport(inputStream, inputFormat.getImportOptions(), outputStream, exportOptions);
}
} catch (OpenOfficeException openOfficeException) {
throw openOfficeException;
} catch (Throwable throwable) {
throw new OpenOfficeException("conversion failed", throwable);
}
}
private void loadAndExport(InputStream inputStream, Map/*<String,Object>*/ importOptions, OutputStream outputStream, Map/*<String,Object>*/ exportOptions) throws Exception {
XComponentLoader desktop = openOfficeConnection.getDesktop();
Map/*<String,Object>*/ loadProperties = new HashMap();
loadProperties.putAll(getDefaultLoadProperties());
loadProperties.putAll(importOptions);
// doesn't work using InputStreamToXInputStreamAdapter; probably because it's not XSeekable
//property("InputStream", new InputStreamToXInputStreamAdapter(inputStream))
loadProperties.put("InputStream", new ByteArrayToXInputStreamAdapter(IOUtils.toByteArray(inputStream)));
XComponent document = desktop.loadComponentFromURL("private:stream", "_blank", 0, toPropertyValues(loadProperties));
if (document == null) {
throw new OpenOfficeException("conversion failed: input document is null after loading");
}
refreshDocument(document);
Map/*<String,Object>*/ storeProperties = new HashMap();
storeProperties.putAll(exportOptions);
storeProperties.put("OutputStream", new OutputStreamToXOutputStreamAdapter(outputStream));
try {
XStorable storable = (XStorable) UnoRuntime.queryInterface(XStorable.class, document);
storable.storeToURL("private:stream", toPropertyValues(storeProperties));
} finally {
document.dispose();
}
}
}