Package org.apache.commons.net.ftp.parser

# Class UnixFTPEntryParser

java.lang.Object
org.apache.commons.net.ftp.FTPFileEntryParserImpl
org.apache.commons.net.ftp.parser.RegexFTPFileEntryParserImpl
org.apache.commons.net.ftp.parser.ConfigurableFTPFileEntryParserImpl
org.apache.commons.net.ftp.parser.UnixFTPEntryParser

All Implemented Interfaces:
  `Configurable`, `FTPFileEntryParser`

public class UnixFTPEntryParser extends ConfigurableFTPFileEntryParserImpl
Implementation FTPFileEntryParser and FTPFileListParser for standard Unix Systems.

This class is based on the logic of Daniel Savarese's DefaultFTPListParser, but adapted to use regular expressions and to fit the new FTPFileEntryParser interface.

See Also:
  - `FTPFileEntryParser (for usage instructions)`

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final FTPClientConfig`
  `NUMERIC_DATE_CONFIG`
  Some Linux distributions are now shipping an FTP server which formats file listing dates in an all-numeric format: `"yyyy-MM-dd HH:mm`.

  ### Fields inherited from class org.apache.commons.net.ftp.parser.RegexFTPFileEntryParserImpl

  `_matcher_`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `UnixFTPEntryParser()`
  Constructs a new instance.
  `UnixFTPEntryParser(FTPClientConfig config)`
  Constructs a new instance with something other than the default configuration.
  `UnixFTPEntryParser(FTPClientConfig config, boolean trimLeadingSpaces)`
  Constructs a new instance with something other than the default configuration.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `protected FTPClientConfig`
  `getDefaultConfiguration()`
  Gets a new default configuration to be used when this class is instantiated without a `FTPClientConfig` parameter being specified.
  `FTPFile`
  `parseFTPEntry(String entry)`
  Parses a line of a Unix (standard) FTP server file listing and converts it into a usable format in the form of an `FTPFile` instance.
  `List<String>`
  `preParse(List<String> original)`
  Preparses the list to discard "total nnn" lines.

  ### Methods inherited from class org.apache.commons.net.ftp.parser.ConfigurableFTPFileEntryParserImpl

  `configure, parseTimestamp`

  ### Methods inherited from class org.apache.commons.net.ftp.parser.RegexFTPFileEntryParserImpl

  `getGroupCnt, getGroupsAsString, group, matches, setRegex, setRegex`

  ### Methods inherited from class org.apache.commons.net.ftp.FTPFileEntryParserImpl

  `readNextEntry`

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Field Details

  - ### NUMERIC_DATE_CONFIG

    public static final FTPClientConfig NUMERIC_DATE_CONFIG
    Some Linux distributions are now shipping an FTP server which formats file listing dates in an all-numeric format: `"yyyy-MM-dd HH:mm`. This is a very welcome development, and hopefully it will soon become the standard. However, since it is so new, for now, and possibly forever, we merely accommodate it, but do not make it the default.

    For now end users may specify this format only via `UnixFTPEntryParser(FTPClientConfig)`. Steve Cohen - 2005-04-17

- ## Constructor Details

  - ### UnixFTPEntryParser

    public UnixFTPEntryParser()
    Constructs a new instance.
    Throws:
      `IllegalArgumentException` - Thrown if the regular expression is unparseable. Should not be seen under normal conditions. If this exception is seen, this is a sign that `REGEX` is not a valid regular expression.

  - ### UnixFTPEntryParser

    public UnixFTPEntryParser(FTPClientConfig config)
    Constructs a new instance with something other than the default configuration.
    Parameters:
      `config` - The `configuration` object used to configure this parser.
    Throws:
      `IllegalArgumentException` - Thrown if the regular expression is unparseable. Should not be seen under normal conditions. If this exception is seen, this is a sign that `REGEX` is not a valid regular expression.
    Since:
      1.4

  - ### UnixFTPEntryParser

    public UnixFTPEntryParser(FTPClientConfig config, boolean trimLeadingSpaces)
    Constructs a new instance with something other than the default configuration.
    Parameters:
      `config` - The `configuration` object used to configure this parser.
      `trimLeadingSpaces` - if `true`, trim leading spaces from file names
    Throws:
      `IllegalArgumentException` - Thrown if the regular expression is unparseable. Should not be seen under normal conditions. If this exception is seen, this is a sign that `REGEX` is not a valid regular expression.
    Since:
      3.4

- ## Method Details

  - ### getDefaultConfiguration

    protected FTPClientConfig getDefaultConfiguration()
    Gets a new default configuration to be used when this class is instantiated without a `FTPClientConfig` parameter being specified.
    Specified by:
      `getDefaultConfiguration` in class `ConfigurableFTPFileEntryParserImpl`
    Returns:
      the default configuration for this parser.

  - ### parseFTPEntry

    public FTPFile parseFTPEntry(String entry)
    Parses a line of a Unix (standard) 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.
    Parameters:
      `entry` - A line of text from the file listing
    Returns:
      An FTPFile instance corresponding to the supplied entry

  - ### preParse

    public List<String> preParse(List<String> original)
    Preparses the list to discard "total nnn" lines.
    Specified by:
      `preParse` in interface `FTPFileEntryParser`
    Overrides:
      `preParse` in class `FTPFileEntryParserImpl`
    Parameters:
      `original` - Original list after it has been created from the server stream
    Returns:
      `original` unmodified.