Package org.apache.tika.parser.microsoft.ooxml

Source Code of org.apache.tika.parser.microsoft.ooxml.XSLFPowerPointExtractorDecorator

/*
* 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tika.parser.microsoft.ooxml;

import java.io.IOException;

import org.apache.poi.xslf.XSLFSlideShow;
import org.apache.poi.xslf.extractor.XSLFPowerPointExtractor;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import org.apache.tika.sax.XHTMLContentHandler;
import org.apache.xmlbeans.XmlException;
import org.openxmlformats.schemas.drawingml.x2006.main.CTRegularTextRun;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextBody;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextParagraph;
import org.openxmlformats.schemas.presentationml.x2006.main.CTComment;
import org.openxmlformats.schemas.presentationml.x2006.main.CTCommentList;
import org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape;
import org.openxmlformats.schemas.presentationml.x2006.main.CTNotesSlide;
import org.openxmlformats.schemas.presentationml.x2006.main.CTShape;
import org.openxmlformats.schemas.presentationml.x2006.main.CTSlide;
import org.openxmlformats.schemas.presentationml.x2006.main.CTSlideIdListEntry;
import org.xml.sax.SAXException;

public class XSLFPowerPointExtractorDecorator extends AbstractOOXMLExtractor {

    public XSLFPowerPointExtractorDecorator(XSLFPowerPointExtractor extractor) {
        super(extractor);
    }

    /**
     * @see org.apache.poi.xslf.extractor.XSLFPowerPointExtractor#getText()
     */
    @Override
    protected void buildXHTML(XHTMLContentHandler xhtml) throws SAXException,
            XmlException, IOException {
        XSLFSlideShow slideShow = (XSLFSlideShow) extractor.getDocument();
        XMLSlideShow xmlSlideShow = new XMLSlideShow(slideShow);

        XSLFSlide[] slides = xmlSlideShow.getSlides();
        for (XSLFSlide slide : slides) {
            CTSlide rawSlide = slide._getCTSlide();
            CTSlideIdListEntry slideId = slide._getCTSlideId();

            CTNotesSlide notes = xmlSlideShow._getXSLFSlideShow().getNotes(
                    slideId);
            CTCommentList comments = xmlSlideShow._getXSLFSlideShow()
                    .getSlideComments(slideId);

            xhtml.startElement("div");
            extractShapeContent(rawSlide.getCSld().getSpTree(), xhtml);

            if (comments != null) {
                for (CTComment comment : comments.getCmArray()) {
                    xhtml.element("p", comment.getText());
                }
            }

            if (notes != null) {
                extractShapeContent(notes.getCSld().getSpTree(), xhtml);
            }
            xhtml.endElement("div");
        }
    }

    private void extractShapeContent(CTGroupShape gs, XHTMLContentHandler xhtml)
            throws SAXException {
        CTShape[] shapes = gs.getSpArray();
        for (CTShape shape : shapes) {
            CTTextBody textBody = shape.getTxBody();
            if (textBody != null) {
                CTTextParagraph[] paras = textBody.getPArray();
                for (CTTextParagraph textParagraph : paras) {
                    CTRegularTextRun[] textRuns = textParagraph.getRArray();
                    for (CTRegularTextRun textRun : textRuns) {
                        xhtml.element("p", textRun.getT());
                    }
                }
            }
        }
    }
}
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