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/ftp/parser/NTFTPEntryParser.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.ftp.parser;
import java.text.ParseException;
import java.util.regex.Pattern;

import org.apache.commons.net.ftp.Configurable;
import org.apache.commons.net.ftp.FTPClientConfig;
import org.apache.commons.net.ftp.FTPFile;

/**
 * Implementation of FTPFileEntryParser and FTPFileListParser for NT Systems.
 *
 * @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions)
 */
public class NTFTPEntryParser extends ConfigurableFTPFileEntryParserImpl
{

    private static final String DEFAULT_DATE_FORMAT
        = "MM-dd-yy hh:mma"; //11-09-01 12:30PM

    private static final String DEFAULT_DATE_FORMAT2
        = "MM-dd-yy kk:mm"; //11-09-01 18:30

    private final FTPTimestampParser timestampParser;

    /**
     * this is the regular expression used by this parser.
     */
    private static final String REGEX =
        "(\\S+)\\s+(\\S+)\\s+"          // MM-dd-yy whitespace hh:mma|kk:mm; swallow trailing spaces
        + "(?:(<DIR>)|([0-9]+))\\s+"    // <DIR> or ddddd; swallow trailing spaces
        + "(\\S.*)";                    // First non-space followed by rest of line (name)

    /**
     * The sole constructor for an NTFTPEntryParser object.
     *
     * @throws IllegalArgumentException
     * Thrown if the regular expression is unparseable.  Should not be seen
     * under normal conditions.  It it is seen, this is a sign that
     * <code>REGEX</code> is  not a valid regular expression.
     */
    public NTFTPEntryParser()
    {
        this(null);
    }

    /**
     * This constructor allows the creation of an NTFTPEntryParser object
     * with something other than the default configuration.
     *
     * @param config The {@link FTPClientConfig configuration} object used to
     * configure this parser.
     * @throws IllegalArgumentException
     * Thrown if the regular expression is unparseable.  Should not be seen
     * under normal conditions.  It it is seen, this is a sign that
     * <code>REGEX</code> is  not a valid regular expression.
     * @since 1.4
     */
     public NTFTPEntryParser(final FTPClientConfig config)
    {
        super(REGEX, Pattern.DOTALL);
        configure(config);
        final FTPClientConfig config2 = new FTPClientConfig(
                FTPClientConfig.SYST_NT,
                DEFAULT_DATE_FORMAT2,
                null);
        config2.setDefaultDateFormatStr(DEFAULT_DATE_FORMAT2);
        this.timestampParser = new FTPTimestampParserImpl();
        ((Configurable)this.timestampParser).configure(config2);
    }

    /**
     * Parses a line of an NT FTP server file listing and converts it into a
     * usable format in the form of an <code> FTPFile </code> instance.  If the
     * file listing line doesn't describe a file, <code> null </code> is
     * returned, otherwise a <code> FTPFile </code> instance representing the
     * files in the directory is returned.
     *
     * @param entry A line of text from the file listing
     * @return An FTPFile instance corresponding to the supplied entry
     */
    @Override
    public FTPFile parseFTPEntry(final String entry)
    {
        final FTPFile f = new FTPFile();
        f.setRawListing(entry);

        if (matches(entry))
        {
            final String datestr = group(1)+" "+group(2);
            final String dirString = group(3);
            final String size = group(4);
            final String name = group(5);
            try
            {
                f.setTimestamp(super.parseTimestamp(datestr));
            }
            catch (final ParseException e)
            {
                // parsing fails, try the other date format
                try
                {
                    f.setTimestamp(timestampParser.parseTimestamp(datestr));
                }
                catch (final ParseException e2)
                {
                    // intentionally do nothing
                }
            }

            if (null == name || name.equals(".") || name.equals(".."))
            {
                return null;
            }
            f.setName(name);


            if ("<DIR>".equals(dirString))
            {
                f.setType(FTPFile.DIRECTORY_TYPE);
                f.setSize(0);
            }
            else
            {
                f.setType(FTPFile.FILE_TYPE);
                if (null != size)
                {
                  f.setSize(Long.parseLong(size));
                }
            }
            return f;
        }
        return null;
    }

    /**
     * Defines a default configuration to be used when this class is
     * instantiated without a {@link  FTPClientConfig  FTPClientConfig}
     * parameter being specified.
     * @return the default configuration for this parser.
     */
    @Override
    public FTPClientConfig getDefaultConfiguration() {
        return new FTPClientConfig(
                FTPClientConfig.SYST_NT,
                DEFAULT_DATE_FORMAT,
                null);
    }

}

⏎ org/apache/commons/net/ftp/parser/NTFTPEntryParser.java

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