org.exoplatform.services.document.impl.MSOutlookDocumentReader.java Source code

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Here is the source code for org.exoplatform.services.document.impl.MSOutlookDocumentReader.java

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/*
 * Copyright (C) 2009 eXo Platform SAS.
 *
 * This 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 software 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.exoplatform.services.document.impl;

import org.apache.poi.hsmf.MAPIMessage;
import org.apache.poi.hsmf.exceptions.ChunkNotFoundException;
import org.exoplatform.services.document.DocumentReadException;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * Created by The eXo Platform SAS Author : Sergey Karpenko
 * <sergey.karpenko@exoplatform.com.ua>
 * 
 * @version $Id: $
 */
public class MSOutlookDocumentReader extends BaseDocumentReader {

    private static final Log LOG = ExoLogger.getLogger("exo.core.component.document.MSOutlookDocumentReader");

    /**
     * Get the application/msword mime type.
     * 
     * @return The application/msword mime type.
     */
    public String[] getMimeTypes() {
        return new String[] { "application/vnd.ms-outlook" };
    }

    /**
     * Force loading of dependent class.
     */
    static {
        MAPIMessage.class.getName();
    }

    public String getContentAsText(InputStream is) throws IOException, DocumentReadException {
        if (is == null) {
            throw new IllegalArgumentException("InputStream is null.");
        }
        try {
            if (is.available() == 0) {
                return "";
            }

            MAPIMessage message;
            try {
                message = new MAPIMessage(is);
            } catch (IOException e) {
                throw new DocumentReadException("Can't open message.", e);
            }
            StringBuilder builder = new StringBuilder();
            try {
                builder.append(message.getDisplayFrom()).append('\n');
            } catch (ChunkNotFoundException e) {
                // "from" is empty
                if (LOG.isTraceEnabled()) {
                    LOG.trace("An exception occurred: " + e.getMessage());
                }
            }
            try {
                builder.append(message.getDisplayTo()).append('\n');
            } catch (ChunkNotFoundException e) {
                // "to" is empty
                if (LOG.isTraceEnabled()) {
                    LOG.trace("An exception occurred: " + e.getMessage());
                }
            }
            try {
                builder.append(message.getSubject()).append('\n');
            } catch (ChunkNotFoundException e) {
                // "subject" is empty
                if (LOG.isTraceEnabled()) {
                    LOG.trace("An exception occurred: " + e.getMessage());
                }
            }
            try {
                builder.append(message.getTextBody());
            } catch (ChunkNotFoundException e) {
                // "textBody" is empty
                if (LOG.isTraceEnabled()) {
                    LOG.trace("An exception occurred: " + e.getMessage());
                }
            }
            return builder.toString();

        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    if (LOG.isTraceEnabled()) {
                        LOG.trace("An exception occurred: " + e.getMessage());
                    }
                }
            }
        }
    }

    public String getContentAsText(InputStream is, String encoding) throws IOException, DocumentReadException {
        // ignore encoding
        return getContentAsText(is);
    }

    public Properties getProperties(InputStream is) throws IOException, DocumentReadException {
        try {
            is.close();
        } catch (IOException e) {
            if (LOG.isTraceEnabled()) {
                LOG.trace("An exception occurred: " + e.getMessage());
            }
        }
        return new Properties();
    }

}