com.groupbyinc.common.apache.commons.net.ftp.parser.OS2FTPEntryParser Maven / Gradle / Ivy
/*
* 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 org.apache.commons.net.ftp.FTPClientConfig;
import org.apache.commons.net.ftp.FTPFile;
/**
* Implementation of FTPFileEntryParser and FTPFileListParser for OS2 Systems.
*
* @author Winston Ojeda
* @author Steve Cohen
* @version $Id: OS2FTPEntryParser.java 1489361 2013-06-04 09:48:36Z sebb $
* @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions)
*/
public class OS2FTPEntryParser extends ConfigurableFTPFileEntryParserImpl
{
private static final String DEFAULT_DATE_FORMAT
= "MM-dd-yy HH:mm"; //11-09-01 12:30
/**
* this is the regular expression used by this parser.
*/
private static final String REGEX =
"\\s*([0-9]+)\\s*"
+ "(\\s+|[A-Z]+)\\s*"
+ "(DIR|\\s+)\\s*"
+ "(\\S+)\\s+(\\S+)\\s+" /* date stuff */
+ "(\\S.*)";
/**
* The default constructor for a OS2FTPEntryParser object.
*
* @exception IllegalArgumentException
* Thrown if the regular expression is unparseable. Should not be seen
* under normal conditions. It it is seen, this is a sign that
* REGEX is not a valid regular expression.
*/
public OS2FTPEntryParser()
{
this(null);
}
/**
* This constructor allows the creation of an OS2FTPEntryParser object
* with something other than the default configuration.
*
* @param config The {@link FTPClientConfig configuration} object used to
* configure this parser.
* @exception IllegalArgumentException
* Thrown if the regular expression is unparseable. Should not be seen
* under normal conditions. It it is seen, this is a sign that
* REGEX is not a valid regular expression.
* @since 1.4
*/
public OS2FTPEntryParser(FTPClientConfig config)
{
super(REGEX);
configure(config);
}
/**
* Parses a line of an OS2 FTP server file listing and converts it into a
* usable format in the form of an FTPFile instance. If the
* file listing line doesn't describe a file, null is
* returned, otherwise a FTPFile 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(String entry)
{
FTPFile f = new FTPFile();
if (matches(entry))
{
String size = group(1);
String attrib = group(2);
String dirString = group(3);
String datestr = group(4)+" "+group(5);
String name = group(6);
try
{
f.setTimestamp(super.parseTimestamp(datestr));
}
catch (ParseException e)
{
// intentionally do nothing
}
//is it a DIR or a file
if (dirString.trim().equals("DIR") || attrib.trim().equals("DIR"))
{
f.setType(FTPFile.DIRECTORY_TYPE);
}
else
{
f.setType(FTPFile.FILE_TYPE);
}
//set the name
f.setName(name.trim());
//set the size
f.setSize(Long.parseLong(size.trim()));
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
protected FTPClientConfig getDefaultConfiguration() {
return new FTPClientConfig(
FTPClientConfig.SYST_OS2,
DEFAULT_DATE_FORMAT,
null, null, null, null);
}
}