Java tutorial
/* * File : $Source: /usr/local/cvs/opencms/src/org/opencms/search/extractors/CmsExtractorMsPowerPoint.java,v $ * Date : $Date: 2006/03/27 14:53:01 $ * Version: $Revision: 1.8 $ * * This library is part of OpenCms - * the Open Source Content Mananagement System * * Copyright (c) 2005 Alkacon Software GmbH (http://www.alkacon.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. * * For further information about Alkacon Software GmbH, please see the * company website: http://www.alkacon.com * * For further information about OpenCms, please see the * project website: http://www.opencms.org * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package com.frameworkset.platform.cms.searchmanager.extractors; import java.io.InputStream; import java.util.Map; import org.apache.poi.hslf.HSLFSlideShow; import org.apache.poi.hslf.extractor.PowerPointExtractor; import org.apache.poi.hslf.model.Slide; import org.apache.poi.hslf.model.TextRun; import org.apache.poi.hslf.usermodel.SlideShow; import org.apache.poi.xslf.extractor.XSLFPowerPointExtractor; import org.apache.poi.xslf.usermodel.XMLSlideShow; import com.frameworkset.platform.cms.searchmanager.handler.ContentHandler; /** * Extracts the text form an MS PowerPoint document.<p> * * @author Alexander Kandzior * * @version $Revision: 1.8 $ * * @since 6.0.0 */ public final class CmsExtractorMsPowerPoint extends A_CmsTextExtractorMsOfficeBase implements java.io.Serializable { /** * Hide the public constructor.<p> */ public CmsExtractorMsPowerPoint(String version) { this.version = version; } // /** // * Returns an instance of this text extractor.<p> // * // * @return an instance of this text extractor // */ // public static I_CmsTextExtractor getExtractor() { // // // since this extractor requires a member variable we have no static instance // return new CmsExtractorMsPowerPoint(); // } /** * @see org.opencms.search.extractors.I_CmsTextExtractor#extractText(java.io.InputStream, java.lang.String) */ public I_CmsExtractionResult extractText(InputStream in, String encoding) throws Exception { //first extract the table content // String result = extractPPTContent(getStreamCopy(in)); // result = removeControlChars(result); // // //now extract the meta information using POI // POIFSReader reader = new POIFSReader(); // reader.registerListener(this); // reader.read(getStreamCopy(in)); // Map metaInfo = extractMetaInformation(); String result = null; Map metaInfo = null; if (this.version.equals(ContentHandler.VERSION_2003)) { result = readPowerPoint(in); metaInfo = extractMetaInformation(); } else { readPowerPoint2007(in); metaInfo = extractMetaInformation(); } //free some memory cleanup(); // return the final result return new CmsExtractionResult(result, metaInfo); } /** * ?ppt * @param path * @return */ public String readPowerPoint(InputStream in) { String content = null; try { HSLFSlideShow slideShow = new HSLFSlideShow(in); org.apache.poi.hslf.extractor.PowerPointExtractor extractor = new PowerPointExtractor(slideShow); this.m_documentSummary = extractor.getDocSummaryInformation(); this.m_summary = extractor.getSummaryInformation(); content = extractor.getText(); // SlideShow ss = new SlideShow(new HSLFSlideShow(in));// is // // InputStreamSlideShow // Slide[] slides = ss.getSlides();// ?? // for (int i = 0; i < slides.length; i++) { // TextRun[] t = slides[i].getTextRuns();// ??TextRun // for (int j = 0; j < t.length; j++) { // content.append(t[j].getText());// content // } // } } catch (Exception ex) { System.out.println(ex.toString()); } return content; } /** * ?ppt * @param path * @return */ public String readPowerPoint2007(InputStream in) { String content = null; try { XMLSlideShow xmlslideshow = new XMLSlideShow(in); org.apache.poi.xslf.extractor.XSLFPowerPointExtractor extractor = new XSLFPowerPointExtractor( xmlslideshow); this.cp = extractor.getCoreProperties(); content = extractor.getText(); // SlideShow ss = new SlideShow(new HSLFSlideShow(in));// is // // InputStreamSlideShow // Slide[] slides = ss.getSlides();// ?? // for (int i = 0; i < slides.length; i++) { // TextRun[] t = slides[i].getTextRuns();// ??TextRun // for (int j = 0; j < t.length; j++) { // content.append(t[j].getText());// content // } // } } catch (Exception ex) { System.out.println(ex.toString()); } return content; } protected String extractPPTContent(InputStream in) throws Exception { SlideShow ppt = new SlideShow(in); Slide[] slide = ppt.getSlides(); StringBuffer content = new StringBuffer(); for (int i = 0; i < slide.length; i++) { TextRun[] tr = slide[i].getTextRuns(); for (int j = 0; j < tr.length; j++) { content.append(" "); content.append(slide[i].getTextRuns()[j].getText()); } } return content.toString(); } }