    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.net.ftp.parser;
    019import java.util.Calendar;
    020
    021import org.apache.commons.net.ftp.FTPFile;
    022
    023/**
    024 * Parser for the Connect Enterprise Unix FTP Server From Sterling Commerce.
    025 * Here is a sample of the sort of output line this parser processes:
    026 *  "-C--E-----FTP B QUA1I1      18128       41 Aug 12 13:56 QUADTEST"
    027 * <P><B>
    028 * Note: EnterpriseUnixFTPEntryParser can only be instantiated through the
    029 * DefaultFTPParserFactory by classname.  It will not be chosen
    030 * by the autodetection scheme.
    031 * </B>
    032 * @version $Id: EnterpriseUnixFTPEntryParser.java 1489361 2013-06-04 09:48:36Z sebb $
    033 * @author <a href="Winston.Ojeda@qg.com">Winston Ojeda</a>
    034 * @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions)
    035 * @see org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory
    036 */
    037public class EnterpriseUnixFTPEntryParser extends RegexFTPFileEntryParserImpl
    038{
    039
    040    /**
    041     * months abbreviations looked for by this parser.  Also used
    042     * to determine <b>which</b> month has been matched by the parser.
    043     */
    044    private static final String MONTHS =
    045        "(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)";
    046
    047    /**
    048     * this is the regular expression used by this parser.
    049     */
    050    private static final String REGEX =
    051        "(([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])"
    052        + "([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z]))"
    053        + "(\\S*)\\s*"
    054        + "(\\S+)\\s*"
    055        + "(\\S*)\\s*"
    056        + "(\\d*)\\s*"
    057        + "(\\d*)\\s*"
    058        + MONTHS
    059        + "\\s*"
    060        + "((?:[012]\\d*)|(?:3[01]))\\s*"
    061        + "((\\d\\d\\d\\d)|((?:[01]\\d)|(?:2[0123])):([012345]\\d))\\s"
    062        + "(\\S*)(\\s*.*)";
    063
    064    /**
    065     * The sole constructor for a EnterpriseUnixFTPEntryParser object.
    066     *
    067     */
    068    public EnterpriseUnixFTPEntryParser()
    069    {
    070        super(REGEX);
    071    }
    072
    073    /**
    074     * Parses a line of a unix FTP server file listing and converts  it into a
    075     * usable format in the form of an <code> FTPFile </code>  instance.  If
    076     * the file listing line doesn't describe a file,  <code> null </code> is
    077     * returned, otherwise a <code> FTPFile </code>  instance representing the
    078     * files in the directory is returned.
    079     *
    080     * @param entry A line of text from the file listing
    081     * @return An FTPFile instance corresponding to the supplied entry
    082     */
    083//    @Override
    084    public FTPFile parseFTPEntry(String entry)
    085    {
    086
    087        FTPFile file = new FTPFile();
    088        file.setRawListing(entry);
    089
    090        if (matches(entry))
    091        {
    092            String usr = group(14);
    093            String grp = group(15);
    094            String filesize = group(16);
    095            String mo = group(17);
    096            String da = group(18);
    097            String yr = group(20);
    098            String hr = group(21);
    099            String min = group(22);
    100            String name = group(23);
    101
    102            file.setType(FTPFile.FILE_TYPE);
    103            file.setUser(usr);
    104            file.setGroup(grp);
    105            try
    106            {
    107                file.setSize(Long.parseLong(filesize));
    108            }
    109            catch (NumberFormatException e)
    110            {
    111                // intentionally do nothing
    112            }
    113
    114            Calendar cal = Calendar.getInstance();
    115        cal.set(Calendar.MILLISECOND, 0);
    116            cal.set(Calendar.SECOND,
    117                    0);
    118            cal.set(Calendar.MINUTE,
    119                    0);
    120            cal.set(Calendar.HOUR_OF_DAY,
    121                    0);
    122            try
    123            {
    124
    125                int pos = MONTHS.indexOf(mo);
    126                int month = pos / 4;
    127                if (yr != null)
    128                {
    129                    // it's a year
    130                    cal.set(Calendar.YEAR,
    131                            Integer.parseInt(yr));
    132                }
    133                else
    134                {
    135                    // it must be  hour/minute or we wouldn't have matched
    136                    int year = cal.get(Calendar.YEAR);
    137
    138                    // if the month we're reading is greater than now, it must
    139                    // be last year
    140                    if (cal.get(Calendar.MONTH) < month)
    141                    {
    142                        year--;
    143                    }
    144                    cal.set(Calendar.YEAR,
    145                            year);
    146                    cal.set(Calendar.HOUR_OF_DAY,
    147                            Integer.parseInt(hr));
    148                    cal.set(Calendar.MINUTE,
    149                            Integer.parseInt(min));
    150                }
    151                cal.set(Calendar.MONTH,
    152                        month);
    153                cal.set(Calendar.DATE,
    154                        Integer.parseInt(da));
    155                file.setTimestamp(cal);
    156            }
    157            catch (NumberFormatException e)
    158            {
    159                // do nothing, date will be uninitialized
    160            }
    161            file.setName(name);
    162
    163            return file;
    164        }
    165        return null;
    166    }
    167}