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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.converter.xml.xslt;
import org.w3c.dom.Document;
import org.openoffice.xmerge.DocumentMerger;
import org.openoffice.xmerge.MergeException;
import org.openoffice.xmerge.ConverterCapabilities;
import org.openoffice.xmerge.merger.DiffAlgorithm;
import org.openoffice.xmerge.merger.Difference;
import org.openoffice.xmerge.merger.NodeMergeAlgorithm;
import org.openoffice.xmerge.merger.Iterator;
import org.openoffice.xmerge.merger.diff.ParaNodeIterator;
import org.openoffice.xmerge.merger.diff.IteratorLCSAlgorithm;
import org.openoffice.xmerge.merger.merge.DocumentMerge;
import org.openoffice.xmerge.merger.merge.CharacterBaseParagraphMerge;
import org.openoffice.xmerge.util.Debug;
/**
* Xslt implementation of {@code DocumentMerger} for the {@link
* org.openoffice.xmerge.converter.xml.xslt.PluginFactoryImpl PluginFactoryImpl}.
*/
public class DocumentMergerImpl implements DocumentMerger {
private final ConverterCapabilities cc_;
private final org.openoffice.xmerge.Document orig;
public DocumentMergerImpl(org.openoffice.xmerge.Document doc, ConverterCapabilities cc) {
cc_ = cc;
this.orig = doc;
}
public void merge(org.openoffice.xmerge.Document modifiedDoc) throws MergeException {
GenericOfficeDocument wdoc1 = (GenericOfficeDocument) orig;
GenericOfficeDocument wdoc2 = (GenericOfficeDocument) modifiedDoc;
Document doc1 = wdoc1.getContentDOM();
Document doc2 = wdoc2.getContentDOM();
Iterator i1 = new ParaNodeIterator(cc_, doc1.getDocumentElement());
Iterator i2 = new ParaNodeIterator(cc_, doc2.getDocumentElement());
DiffAlgorithm diffAlgo = new IteratorLCSAlgorithm();
// find out the paragrah level diffs
Difference[] diffTable = diffAlgo.computeDiffs(i1, i2);
if (Debug.isFlagSet(Debug.INFO)) {
Debug.log(Debug.INFO, "Diff Result: ");
for (int i = 0; i < diffTable.length; i++) {
Debug.log(Debug.INFO, diffTable[i].debug());
}
}
// merge the paragraphs
NodeMergeAlgorithm charMerge = new CharacterBaseParagraphMerge();
DocumentMerge docMerge = new DocumentMerge(cc_, charMerge);
docMerge.applyDifference(i1, i2, diffTable);
}
}
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