001/*
002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl-2.1.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Antoine Taillefer <ataillefer@nuxeo.com>
016 *     Thibaud Arguillere
017 */
018
019package org.nuxeo.diff.pictures;
020
021import java.io.StringWriter;
022import java.util.ArrayList;
023import java.util.List;
024import java.util.Locale;
025
026import org.nuxeo.ecm.core.api.Blob;
027import org.nuxeo.ecm.core.api.Blobs;
028import org.nuxeo.ecm.core.api.DocumentModel;
029import org.nuxeo.ecm.diff.content.ContentDiffException;
030import org.nuxeo.ecm.diff.content.adapter.MimeTypeContentDiffer;
031
032/**
033 * ImageMagickContentDiffer
034 *
035 * @since 7.4
036 */
037public class ImageMagickContentDiffer implements MimeTypeContentDiffer {
038
039    @Override
040    public List<Blob> getContentDiff(DocumentModel leftDoc, DocumentModel rightDoc, String xpath, Locale locale)
041            throws ContentDiffException {
042
043        try {
044            List<Blob> blobResults = new ArrayList<Blob>();
045            StringWriter sw = new StringWriter();
046
047            String html = DiffPictures.buildDiffHtml(leftDoc, rightDoc, xpath);
048            sw.write(html);
049
050            String stringBlob = sw.toString();
051            Blob mainBlob = Blobs.createBlob(stringBlob);
052            sw.close();
053
054            mainBlob.setFilename("contentDiff.html");
055            mainBlob.setMimeType("text/html");
056
057            blobResults.add(mainBlob);
058            return blobResults;
059
060        } catch (Exception e) {
061            throw new ContentDiffException(e);
062        }
063    }
064
065    @Override
066    public List<Blob> getContentDiff(Blob leftBlob, Blob rightBlob, Locale locale) throws ContentDiffException {
067        throw new UnsupportedOperationException("ImageMagickContentDiffer can handle only DocumentModel");
068    }
069}