commons-net.jar is the bytecode of Apache Commons Net library, which implements the client side of many basic Internet protocols.

Apache Commons Net Source Code files are provided in the binary packge (commons-net-3.8.0-bin.zip). You can download it at Apache Commons Net Website.

The source code of commons-net-3.8.0.jar is provided below:

⏎ org/apache/commons/net/io/ToNetASCIIOutputStream.java

/*
 * 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.io;

import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;

/**
 * This class wraps an output stream, replacing all singly occurring
 * <LF> (linefeed) characters with <CR><LF> (carriage return
 * followed by linefeed), which is the NETASCII standard for representing
 * a newline.
 * You would use this class to implement ASCII file transfers requiring
 * conversion to NETASCII.
 *
 *
 */

public final class ToNetASCIIOutputStream extends FilterOutputStream
{
    private boolean lastWasCR;

    /**
     * Creates a ToNetASCIIOutputStream instance that wraps an existing
     * OutputStream.
     *
     * @param output  The OutputStream to wrap.
     */
    public ToNetASCIIOutputStream(final OutputStream output)
    {
        super(output);
        lastWasCR = false;
    }


    /**
     * Writes a byte to the stream.    Note that a call to this method
     * may result in multiple writes to the underlying input stream in order
     * to convert naked newlines to NETASCII line separators.
     * This is transparent to the programmer and is only mentioned for
     * completeness.
     *
     * @param ch The byte to write.
     * @throws IOException If an error occurs while writing to the underlying
     *            stream.
     */
    @Override
    public synchronized void write(final int ch)
    throws IOException
    {
        switch (ch)
        {
        case '\r':
            lastWasCR = true;
            out.write('\r');
            return ;
        case '\n':
            if (!lastWasCR) {
                out.write('\r');
            }
            //$FALL-THROUGH$
        default:
            lastWasCR = false;
            out.write(ch);
        }
    }


    /**
     * Writes a byte array to the stream.
     *
     * @param buffer  The byte array to write.
     * @throws IOException If an error occurs while writing to the underlying
     *            stream.
     */
    @Override
    public synchronized void write(final 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.
     *
     * @param buffer  The byte array to write.
     * @param offset  The offset into the array at which to start copying data.
     * @param length  The number of bytes to write.
     * @throws IOException If an error occurs while writing to the underlying
     *            stream.
     */
    @Override
    public synchronized void write(final byte buffer[], int offset, int length)
    throws IOException
    {
        while (length-- > 0) {
            write(buffer[offset++]);
        }
    }

}

⏎ org/apache/commons/net/io/ToNetASCIIOutputStream.java

Or download all of them as a single archive file:

File name: commons-net-3.8.0-sources.jar
File size: 437325 bytes
Release date: 2020-01-22
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