Class alterrs.gnu.getopt.LongOpt

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# Class alterrs.gnu.getopt.LongOpt

    java.lang.Object
       |
       +----alterrs.gnu.getopt.LongOpt

public class LongOpt
extends Object

This object represents the definition of a long option in the Java port of GNU getopt. An array of LongOpt objects is passed to the Getopt object to define the list of valid long options for a given parsing session. Refer to the getopt documentation for details on the format of long options.

Version:
  1.0.3
Author:
  Aaron M. Renn (arenn@urbanophile.com)
See Also:
  Getopt

##

NO_ARGUMENT
  Constant value used for the "has_arg" constructor argument.
OPTIONAL_ARGUMENT
  Constant value used for the "has_arg" constructor argument.
REQUIRED_ARGUMENT
  Constant value used for the "has_arg" constructor argument.

##

LongOpt(String, int, StringBuffer, int)
  Create a new LongOpt object with the given parameter values.

##

getFlag()
  Returns the value of the 'flag' field for this long option
getHasArg()
  Returns the value set for the 'has_arg' field for this long option
getName()
  Returns the name of this LongOpt as a String
getVal()
  Returns the value of the 'val' field for this long option

##

NO_ARGUMENT

     public static final int NO_ARGUMENT

  Constant value used for the "has_arg" constructor argument. This value indicates that the option takes no argument.

REQUIRED_ARGUMENT

     public static final int REQUIRED_ARGUMENT

  Constant value used for the "has_arg" constructor argument. This value indicates that the option takes an argument that is required.

OPTIONAL_ARGUMENT

     public static final int OPTIONAL_ARGUMENT

  Constant value used for the "has_arg" constructor argument. This value indicates that the option takes an argument that is optional.

##

LongOpt

     public LongOpt(String name,
                    int has_arg,
                    StringBuffer flag,
                    int val) throws IllegalArgumentException

  Create a new LongOpt object with the given parameter values. If the value passed as has_arg is not valid, then an exception is thrown.

  Parameters:
    name - The long option String.
    has_arg - Indicates whether the option has no argument (NO_ARGUMENT), a required argument (REQUIRED_ARGUMENT) or an optional argument (OPTIONAL_ARGUMENT).
    flag - If non-null, this is a location to store the value of "val" when this option is encountered, otherwise "val" is treated as the equivalent short option character.
    val - The value to return for this long option, or the equivalent single letter option to emulate if flag is null.
  Throws: IllegalArgumentException
    If the has_arg param is not one of NO_ARGUMENT, REQUIRED_ARGUMENT or OPTIONAL_ARGUMENT.

##

getName

     public String getName()

  Returns the name of this LongOpt as a String

  Returns:
    Then name of the long option

getHasArg

     public int getHasArg()

  Returns the value set for the 'has_arg' field for this long option

  Returns:
    The value of 'has_arg'

getFlag

     public StringBuffer getFlag()

  Returns the value of the 'flag' field for this long option

  Returns:
    The value of 'flag'

getVal

     public int getVal()

  Returns the value of the 'val' field for this long option

  Returns:
    The value of 'val'

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