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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* 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 com.feilong.lib.net.ftp.parser;
import java.text.ParseException;
import java.util.regex.Pattern;
import com.feilong.lib.net.ftp.Configurable;
import com.feilong.lib.net.ftp.FTPClientConfig;
import com.feilong.lib.net.ftp.FTPFile;
/**
* Implementation of FTPFileEntryParser and FTPFileListParser for NT Systems.
*
* @version $Id$
* @see com.feilong.lib.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
+ "(?:()|([0-9]+))\\s+" // 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
* REGEX 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
* REGEX is not a valid regular expression.
* @since 1.4
*/
public NTFTPEntryParser(FTPClientConfig config){
super(REGEX, Pattern.DOTALL);
configure(config);
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 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();
f.setRawListing(entry);
if (matches(entry)){
String datestr = group(1) + " " + group(2);
String dirString = group(3);
String size = group(4);
String name = group(5);
try{
f.setTimestamp(super.parseTimestamp(datestr));
}catch (ParseException e){
// parsing fails, try the other date format
try{
f.setTimestamp(timestampParser.parseTimestamp(datestr));
}catch (ParseException e2){
// intentionally do nothing
}
}
if (null == name || name.equals(".") || name.equals("..")){
return (null);
}
f.setName(name);
if ("".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);
}
}