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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.telnet;
 
Wraps an output stream.

In binary mode, the only conversion is to double IAC.

In ASCII mode, if convertCRtoCRLF is true, any CR is converted to CRLF. IACs are doubled.

 
 
 
 final class TelnetOutputStream extends OutputStream
 {
     private final TelnetClient __client;
     // TODO there does not appear to be any way to change this value - should it be a ctor parameter?
     private final boolean __convertCRtoCRLF = true;
     private boolean __lastWasCR = false;
 
     {
          = client;
     }


    
Writes a byte to the stream.

Parameters:
ch The byte to write.
Throws:
java.io.IOException If an error occurs while writing to the underlying stream.
 
     @Override
     public void write(int chthrows IOException
     {
 
         synchronized ()
         {
             ch &= 0xff;
 
             if (._requestedWont(.)) // i.e. ASCII
             {
                 if ()
                 {
                     if ()
                     {
                         ._sendByte('\n');
                         if (ch == '\n'// i.e. was CRLF anyway
                         {
                              = false;
                             return ;
                         }
                     } // __convertCRtoCRLF
                     else if (ch != '\n')
                      {
                         ._sendByte('\0'); // RFC854 requires CR NUL for bare CR
                     }
                 }
 
                  = false;
 
                 switch (ch)
                 {
                 case '\r':
                     ._sendByte('\r');
                      = true;
                     break;
                 case .:
                     ._sendByte(.);
                     ._sendByte(.);
                     break;
                 default:
                     ._sendByte(ch);
                     break;
                 }
             } // end ASCII
             else if (ch == .)
             {
                ._sendByte(ch);
                ._sendByte(.);
            } else {
                ._sendByte(ch);
            }
        }
    }


    
Writes a byte array to the stream.

Parameters:
buffer The byte array to write.
Throws:
java.io.IOException If an error occurs while writing to the underlying stream.
    @Override
    public void write(byte buffer[]) throws IOException
    {
        write(buffer, 0, buffer.length);
    }


    
Writes a number of bytes from a byte array to the stream starting from a given offset.

Parameters:
buffer The byte array to write.
offset The offset into the array at which to start copying data.
length The number of bytes to write.
Throws:
java.io.IOException If an error occurs while writing to the underlying stream.
    @Override
    public void write(byte buffer[], int offsetint lengththrows IOException
    {
        synchronized ()
        {
            while (length-- > 0) {
                write(buffer[offset++]);
            }
        }
    }

    
Flushes the stream. *
    @Override
    public void flush() throws IOException
    {
        ._flushOutputStream();
    }

    
Closes the stream. *
    @Override
    public void close() throws IOException
    {
        ._closeOutputStream();
    }
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