net.sourceforge.docfetcher.parse.MSOffice2007Parser.java Source code

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Here is the source code for net.sourceforge.docfetcher.parse.MSOffice2007Parser.java

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/*******************************************************************************
 * Copyright (c) 2009 Tran Nam Quang.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Tran Nam Quang - initial API and implementation
 *******************************************************************************/

package net.sourceforge.docfetcher.parse;

import java.io.File;

import net.sourceforge.docfetcher.enumeration.Msg;
import net.sourceforge.docfetcher.model.Document;

import org.apache.poi.POITextExtractor;
import org.apache.poi.extractor.ExtractorFactory;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.openxml4j.opc.PackageAccess;
import org.apache.poi.openxml4j.opc.PackageProperties;

/**
 * @author Tran Nam Quang
 */
public abstract class MSOffice2007Parser extends Parser {

    public Document parse(File file) throws ParseException {
        try {
            // Extract contents
            POITextExtractor ef = ExtractorFactory.createExtractor(file);
            StringBuffer contents = new StringBuffer(ef.getText());

            // Open up properties
            OPCPackage pkg = OPCPackage.open(file.getAbsolutePath(), PackageAccess.READ);
            PackageProperties props = pkg.getPackageProperties();

            // Get author(s)
            String author = null;
            String defaultAuthor = props.getCreatorProperty().getValue();
            String lastAuthor = props.getLastModifiedByProperty().getValue();
            if (defaultAuthor == null) {
                if (lastAuthor != null)
                    author = lastAuthor;
            } else if (lastAuthor == null) {
                author = defaultAuthor;
            } else {
                if (defaultAuthor.equals(lastAuthor))
                    author = defaultAuthor;
                else
                    author = defaultAuthor + ", " + lastAuthor; //$NON-NLS-1$
            }

            // Get other metadata
            String description = props.getDescriptionProperty().getValue();
            String keywords = props.getKeywordsProperty().getValue();
            String subject = props.getSubjectProperty().getValue();
            String title = props.getTitleProperty().getValue();

            // Append metadata to contents
            String[] metaData = new String[] { author, description, keywords, subject, title };
            for (String field : metaData)
                if (field != null)
                    contents.append(" ").append(field); //$NON-NLS-1$
            return new Document(file, title, contents).addAuthor(author);
        } catch (Exception e) {
            throw new ParseException(file, Msg.file_not_readable.value());
        }
    }

    public String renderText(File file) throws ParseException {
        try {
            return ExtractorFactory.createExtractor(file).getText();
        } catch (Exception e) {
            throw new ParseException(file, Msg.file_not_readable.value());
        }
    }

}