Package org.apache.james.transport.mailets.listservcommands

Source Code of org.apache.james.transport.mailets.listservcommands.Info

/***********************************************************************
* Copyright (c) 2000-2004 The Apache Software Foundation.             *
* All rights reserved.                                                *
* ------------------------------------------------------------------- *
* Licensed 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.james.transport.mailets.listservcommands;

import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.james.services.UsersRepository;
import org.apache.james.transport.mailets.ICommandListservManager;
import org.apache.james.util.XMLResources;
import org.apache.mailet.Mail;

import javax.mail.MessagingException;
import java.util.Iterator;
import java.util.Properties;

/**
* Info handles the info command.
* It is configured by:
* <pre>&lt;command name="info" class="Info"/&gt;</pre>
*
* <br />
* <br />
*
* It uses the formatted text-based resources for its return mail body:
* <ul>
<li>header
<li>info
<li>admincommands
* </ul>
*
* <br />
* <br />
* After formatting the text, the message is delivered with {@link #sendStandardReply}
*
* Todo: make displaying the current member list optional
*
* @version CVS $Revision: 1.1.2.3 $ $Date: 2004/03/15 03:54:20 $
* @since 2.2.0
*/
public class Info extends BaseCommand {

    //For resources
    protected XMLResources[] xmlResources;

    protected static final int HEADER = 0;
    protected static final int INFO = 1;
    protected static final int ADMIN_COMMANDS = 2;

    public void init(ICommandListservManager commandListservManager, Configuration configuration) throws ConfigurationException {
        super.init(commandListservManager, configuration);
        xmlResources = initXMLResources(new String[]{"header", "info", "admincommands"});
    }

    /**
     * Process the info command using the following text resources:
     * <ul>
     <li>{@link #HEADER}
     <li>{@link #INFO}
     <li>{@link #ADMIN_COMMANDS}
     * </ul>
     *
     * @param mail
     */
    public void onCommand(Mail mail) throws MessagingException {
        //send info mail
        Properties props = getStandardProperties();
        props.put("MEMBER_LIST", getMemberList());

        StringBuffer plainTextMessage = new StringBuffer();
        String header = xmlResources[HEADER].getString("text", props);
        plainTextMessage.append(header);

        String infoMail = xmlResources[INFO].getString("text", props);
        plainTextMessage.append(infoMail);

        String adminCommands = xmlResources[ADMIN_COMMANDS].getString("text", props);
        plainTextMessage.append(adminCommands);

        String subject = xmlResources[INFO].getString("info.subject", props);

        sendStandardReply(mail, subject, plainTextMessage.toString(), null);
    }

    /**
     * Retrieve the current member list
     * @return the formatted member list
     *
     * @see #getUsersRepository
     */
    protected String getMemberList() {

        StringBuffer buffer = new StringBuffer(0x1000);
        buffer.append("\r\n");
        UsersRepository usersRepository = getUsersRepository();
        for (Iterator it = usersRepository.list(); it.hasNext();) {
            String userName = (String) it.next();
            buffer.append("    ").append(userName);
            buffer.append("\r\n");
        }

        return buffer.toString();
    }
}
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