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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
package org.openoffice.xmerge;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import org.openoffice.xmerge.util.registry.ConverterInfo;
/**
* The <code>Convert</code> class manages a conversion from one
* mime-type to another. The <code>ConvertFactory</code> is
* responsible for returning the appropriate <code>Convert</code>
* class for a specified conversion. This class is responsible
* for all interactions with the <code>PluginFactory</code>
* implementation.
*
* @see ConverterFactory
* @see PluginFactory
* @see org.openoffice.xmerge.util.registry.ConverterInfo
*/
public class Convert implements Cloneable {
/**
* ConvertInfo that corresponds to the from-mime/to-mime
* conversion.
*/
private ConverterInfo ci;
/**
* true if converting to the Office format, false if converting
* to the device format.
*/
private boolean toOffice;
/**
* Holds the convert input data.
*/
private ConvertData inputCD = new ConvertData();
/**
* Construct a Convert class with specified <code>ConvertInfo</code>
* registry information.
*
* @param ci A <code>ConvertInfo</code> object containing
* registry information corresponding to a
* specific plug-in.
* @param toOffice true if converting to the Office format,
* false if converting to the device format.
*/
public Convert(ConverterInfo ci, boolean toOffice) {
this.ci = ci;
this.toOffice = toOffice;
}
/**
* Adds an <code>InputStream</code> to be used as input by the
* <code>Convert</code> class. It is possible that many files
* need to be converted into a single output <code>Document</code>,
* so this function may be called more than one time. It is the
* plug-in's responsibility to know how to handle the input.
*
* @param name The name corresponding to the <code>InputStream</code>.
* @param is <code>InputStream</code> to be used as input.
*
* @throws IOException If any I/O error occurs.
*/
public void addInputStream(String name, InputStream is)
throws IOException {
Document inputDoc;
if (toOffice) {
inputDoc = ci.getPluginFactory().createDeviceDocument(name, is);
} else {
inputDoc = ci.getPluginFactory().createOfficeDocument(name, is);
}
inputCD.addDocument(inputDoc);
}
/**
* Adds an <code>InputStream</code> to be used as input by the
* <code>Convert</code> class. It is possible that many files
* need to be converted into a single output <code>Document</code>,
* so this function may be called more than one time. It is the
* plug-in's responsibility to know how to handle the input.
*
* @param name The name corresponding to the <code>InputStream</code>.
* @param is <code>InputStream</code> to be used as input.
* @param isZip <code>boolean</code> to identify that incoming stream is * zipped
*
* @throws IOException If any I/O error occurs.
*/
public void addInputStream(String name, InputStream is,boolean isZip)
throws IOException {
Document inputDoc;
if (toOffice) {
inputDoc = ci.getPluginFactory().createDeviceDocument(name, is);
} else {
inputDoc = ci.getPluginFactory().createOfficeDocument(name, is, isZip);
}
inputCD.addDocument(inputDoc);
}
/**
* Returns a <code>DocumentMerger</code> for the given <code>Document</code>.
*
* @param origDoc The <code>Document</code> were later changes will be merged to
*
* @return The <code>DocumentMerger</code> object for the given document.
*
* @throws IOException If any I/O error occurs.
*/
public DocumentMerger getDocumentMerger(Document origDoc)
throws IOException {
DocumentMergerFactory myDocMergerFactory = ci.getDocMergerFactory();
DocumentMerger merger = myDocMergerFactory.createDocumentMerger(origDoc);
return merger;
}
/**
* Resets the input queue, so that the user can use this class to
* perform another conversion. This causes the
* <code>addInputStream</code> method to accept input for the next
* conversion.
*/
private void reset() {
inputCD.reset();
}
/**
* Clones a Convert object so another Convert object can
* do the same conversion. <code>InputStream</code> objects passed
* in via calls to the <code>addInputStream</code> method are not
* copied.
*
* @return The cloned <code>Convert</code> object.
*/
@Override
public Object clone() {
Convert aClone = null;
try {
aClone = (Convert) super.clone();
aClone.reset();
}
catch (CloneNotSupportedException e) {
System.out.println("Convert clone could not be created");
}
return aClone;
}
/**
* Convert the input specified in calls to the <code>addInputStream</code>
* method to the output format specified by this <code>Convert</code>
* class.
*
* @return The output data.
*
* @throws ConvertException If any conversion error occurs.
* @throws IOException If any I/O error occurs.
*/
public ConvertData convert() throws ConvertException, IOException {
ConvertData dataOut = new ConvertData();
if (toOffice) {
// From device format to Office format
DocumentDeserializerFactory myDocDeserializerFactory =
ci.getDocDeserializerFactory();
DocumentDeserializer deser =
myDocDeserializerFactory.createDocumentDeserializer(inputCD);
Document deviceDoc = deser.deserialize();
dataOut.addDocument(deviceDoc);
return dataOut;
} else {
// From Office format to device format
DocumentSerializerFactory myDocSerializerFactory =
ci.getDocSerializerFactory();
Iterator<Object> e = inputCD.getDocumentEnumeration();
Document doc = (Document) e.next();
DocumentSerializer ser = myDocSerializerFactory.createDocumentSerializer(doc);
dataOut = ser.serialize();
return dataOut;
}
}
/**
* Returns the appropriate "Office" <code>Document</code>
* object for this plug-in.
*
* @param name The name of the <code>Document</code> to create.
* @param is The <code>InputStream</code> corresponding to the
* <code>Document</code> to create.
*
* @return The appropriate "Office" <code>Document</code>
* object for this plug-in.
*
* @throws IOException If any I/O error occurs.
*/
public Document getOfficeDocument(String name, InputStream is)
throws IOException {
return(ci.getPluginFactory().createOfficeDocument(name, is));
}
}
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