net.dpml.cli.option
Class Command

java.lang.Object
  net.dpml.cli.option.OptionImpl
      net.dpml.cli.option.ParentImpl
          net.dpml.cli.option.Command

All Implemented Interfaces:

Option, Parent

public class Command
extends ParentImpl

Represents a cvs "update" style command line option. Like all Parents, Commands can have child options and can be part of Arguments.

Version:

1.0.0

Author:

Digital Product Meta Library

Constructor Summary

Command(String preferredName, String description, Set aliases, boolean required, Argument argument, Group children, int id)
Creates a new Command instance.

Method Summary

void	appendUsage(StringBuffer buffer, Set helpSettings, Comparator comp) Appends usage information to the specified StringBuffer
String	getPreferredName() The preferred name of an option is used for generating help and usage information.
Set	getTriggers() Identifies the argument prefixes that should trigger this option.
void	processParent(WriteableCommandLine commandLine, ListIterator arguments) Process the parent.
void	validate(WriteableCommandLine commandLine) Checks that the supplied CommandLine is valid with respect to this option.

Methods inherited from class net.dpml.cli.option.ParentImpl

canProcess, defaults, findOption, getArgument, getChildren, getDescription, getPrefixes, helpLines, process

Methods inherited from class net.dpml.cli.option.OptionImpl

canProcess, checkPrefixes, equals, getId, hashCode, isRequired, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.dpml.cli.Option

canProcess, getId, isRequired

Constructor Detail

Command

public Command(String preferredName,
               String description,
               Set aliases,
               boolean required,
               Argument argument,
               Group children,
               int id)

Creates a new Command instance.

Parameters:

preferredName - the name normally used to refer to the Command

description - a description of the Command

aliases - alternative names for the Command

required - true if the Command is required

argument - an Argument that the command takes

children - the Group of child options for this Command

id - a unique id for the Command

See Also:

ParentImpl.ParentImpl(Argument, Group, String, int, boolean)

Method Detail

processParent

public void processParent(WriteableCommandLine commandLine,
                          ListIterator arguments)
                   throws OptionException

Process the parent.

Parameters:

commandLine - the commandline

arguments - an iterator of arguments

Throws:

OptionException - if an error occurs

See Also:

Option.process(WriteableCommandLine, ListIterator)

getTriggers

public Set getTriggers()

Identifies the argument prefixes that should trigger this option. This is used to decide which of many Options should be tried when processing a given argument string. The returned Set must not be null.

Returns:

The set of triggers for this Option

validate

public void validate(WriteableCommandLine commandLine)
              throws OptionException

Checks that the supplied CommandLine is valid with respect to this option.

Specified by:

validate in interface Option

Overrides:

validate in class ParentImpl

Parameters:

commandLine - the CommandLine to check.

Throws:

OptionException - if the CommandLine is not valid.

appendUsage

public void appendUsage(StringBuffer buffer,
                        Set helpSettings,
                        Comparator comp)

Appends usage information to the specified StringBuffer

Specified by:

appendUsage in interface Option

Overrides:

appendUsage in class ParentImpl

Parameters:

buffer - the buffer to append to

helpSettings - a set of display settings @see DisplaySetting

comp - a comparator used to sort the Options

getPreferredName

public String getPreferredName()

The preferred name of an option is used for generating help and usage information.

Returns:

The preferred name of the option