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  /*
   * 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.commons.net;
 
This is a support class for some of the example programs. It is a sample implementation of the ProtocolCommandListener interface which just prints out to a specified stream all command/reply traffic.

Since:
2.0
 
 
 public class PrintCommandListener implements ProtocolCommandListener
 {
     private final PrintWriter __writer;
     private final boolean __nologin;
     private final char __eolMarker;
     private final boolean __directionMarker;

    
Create the default instance which prints everything.

Parameters:
stream where to write the commands and responses e.g. System.out
Since:
3.0
 
     public PrintCommandListener(PrintStream stream)
     {
         this(new PrintWriter(stream));
     }

    
Create an instance which optionally suppresses login command text and indicates where the EOL starts with the specified character.

Parameters:
stream where to write the commands and responses
suppressLogin if true, only print command name for login
Since:
3.0
 
     public PrintCommandListener(PrintStream streamboolean suppressLogin) {
         this(new PrintWriter(stream), suppressLogin);
     }

    
Create an instance which optionally suppresses login command text and indicates where the EOL starts with the specified character.

Parameters:
stream where to write the commands and responses
suppressLogin if true, only print command name for login
eolMarker if non-zero, add a marker just before the EOL.
Since:
3.0
 
     public PrintCommandListener(PrintStream streamboolean suppressLoginchar eolMarker) {
         this(new PrintWriter(stream), suppressLogineolMarker);
     }

    
Create an instance which optionally suppresses login command text and indicates where the EOL starts with the specified character.

Parameters:
stream where to write the commands and responses
suppressLogin if true, only print command name for login
eolMarker if non-zero, add a marker just before the EOL.
showDirection if true, add "> " or "< " as appropriate to the output
Since:
3.0
 
     public PrintCommandListener(PrintStream streamboolean suppressLoginchar eolMarkerboolean showDirection) {
         this(new PrintWriter(stream), suppressLogineolMarkershowDirection);
     }

    
Create the default instance which prints everything.

Parameters:
writer where to write the commands and responses
 
     public PrintCommandListener(PrintWriter writer)
     {
        this(writerfalse);
    }

    
Create an instance which optionally suppresses login command text.

Parameters:
writer where to write the commands and responses
suppressLogin if true, only print command name for login
Since:
3.0
    public PrintCommandListener(PrintWriter writerboolean suppressLogin)
    {
        this(writersuppressLogin, (char) 0);
    }

    
Create an instance which optionally suppresses login command text and indicates where the EOL starts with the specified character.

Parameters:
writer where to write the commands and responses
suppressLogin if true, only print command name for login
eolMarker if non-zero, add a marker just before the EOL.
Since:
3.0
    public PrintCommandListener(PrintWriter writerboolean suppressLoginchar eolMarker)
    {
        this(writersuppressLogineolMarkerfalse);
    }

    
Create an instance which optionally suppresses login command text and indicates where the EOL starts with the specified character.

Parameters:
writer where to write the commands and responses
suppressLogin if true, only print command name for login
eolMarker if non-zero, add a marker just before the EOL.
showDirection if true, add "> " or "< " as appropriate to the output
Since:
3.0
    public PrintCommandListener(PrintWriter writerboolean suppressLoginchar eolMarkerboolean showDirection)
    {
         = writer;
         = suppressLogin;
         = eolMarker;
         = showDirection;
    }
//    @Override
    public void protocolCommandSent(ProtocolCommandEvent event)
    {
        if () {
            .print("> ");
        }
        if () {
            String cmd = event.getCommand();
            if ("PASS".equalsIgnoreCase(cmd) || "USER".equalsIgnoreCase(cmd)) {
                .print(cmd);
                .println(" *******"); // Don't bother with EOL marker for this!
            } else {
                final String IMAP_LOGIN = "LOGIN";
                if (IMAP_LOGIN.equalsIgnoreCase(cmd)) { // IMAP
                    String msg = event.getMessage();
                    msg=msg.substring(0, msg.indexOf(IMAP_LOGIN)+IMAP_LOGIN.length());
                    .print(msg);
                    .println(" *******"); // Don't bother with EOL marker for this!
                } else {
                    .print(getPrintableString(event.getMessage()));
                }
            }
        } else {
            .print(getPrintableString(event.getMessage()));
        }
        .flush();
    }
    private String getPrintableString(String msg){
        if ( == 0) {
            return msg;
        }
        int pos = msg.indexOf(.);
        if (pos > 0) {
            StringBuilder sb = new StringBuilder();
            sb.append(msg.substring(0,pos));
            sb.append();
            sb.append(msg.substring(pos));
            return sb.toString();
        }
        return msg;
    }
//    @Override
    public void protocolReplyReceived(ProtocolCommandEvent event)
    {
        if () {
            .print("< ");
        }
        .print(event.getMessage());
        .flush();
    }
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