net.dpml.cli.option
Class SourceDestArgument

java.lang.Object
  net.dpml.cli.option.OptionImpl
      net.dpml.cli.option.ArgumentImpl
          net.dpml.cli.option.SourceDestArgument

All Implemented Interfaces:

Argument, Option

public class SourceDestArgument
extends ArgumentImpl

An Argument implementation that allows a variable size Argument to precede a fixed size argument. The canonical example of it's use is in the unix cp command where a number of source can be specified with exactly one destination specfied at the end.

Version:

1.0.0

Author:

Digital Product Meta Library

Field Summary

Fields inherited from class net.dpml.cli.option.ArgumentImpl

DEFAULT_CONSUME_REMAINING, DEFAULT_INITIAL_SEPARATOR, DEFAULT_SUBSEQUENT_SEPARATOR

Constructor Summary

SourceDestArgument(Argument source, Argument dest)
Creates a SourceDestArgument using defaults where possible.

SourceDestArgument(Argument source, Argument dest, char initialSeparator, char subsequentSeparator, String consumeRemaining, List defaultValues)
Creates a SourceDestArgument using the specified parameters.

Method Summary

void	appendUsage(StringBuffer buffer, Set helpSettings, Comparator comp) Appends usage information to the specified StringBuffer
boolean	canProcess(WriteableCommandLine commandLine, String arg) Indicates whether this Option will be able to process the particular argument.
List	helpLines(int depth, Set helpSettings, Comparator comp) Builds up a list of HelpLineImpl instances to be presented by HelpFormatter.
void	validate(WriteableCommandLine commandLine, Option option) Checks that the supplied CommandLine is valid with respect to the suppled option.

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

defaults, defaultValues, getConsumeRemaining, getDefaultValues, getDescription, getInitialSeparator, getMaximum, getMinimum, getPreferredName, getPrefixes, getSubsequentSeparator, getTriggers, getValidator, isRequired, process, processValues, stripBoundaryQuotes, validate

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

canProcess, checkPrefixes, equals, findOption, getId, hashCode, 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, findOption, getId

Constructor Detail

SourceDestArgument

public SourceDestArgument(Argument source,
                          Argument dest)

Creates a SourceDestArgument using defaults where possible.

Parameters:

source - the variable size Argument

dest - the fixed size Argument

SourceDestArgument

public SourceDestArgument(Argument source,
                          Argument dest,
                          char initialSeparator,
                          char subsequentSeparator,
                          String consumeRemaining,
                          List defaultValues)

Creates a SourceDestArgument using the specified parameters.

Parameters:

source - the variable size Argument

dest - the fixed size Argument

initialSeparator - the inistial separator to use

subsequentSeparator - the subsequent separator to use

consumeRemaining - the token triggering consume remaining behaviour

defaultValues - the default values for the SourceDestArgument

Method Detail

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 ArgumentImpl

Parameters:

buffer - the buffer to append to

helpSettings - a set of display settings @see DisplaySetting

comp - a comparator used to sort the Options

helpLines

public List helpLines(int depth,
                      Set helpSettings,
                      Comparator comp)

Builds up a list of HelpLineImpl instances to be presented by HelpFormatter.

Specified by:

helpLines in interface Option

Overrides:

helpLines in class ArgumentImpl

Parameters:

depth - the initial indent depth

helpSettings - the HelpSettings that should be applied

comp - a comparator used to sort options when applicable.

Returns:

a List of HelpLineImpl objects

See Also:

HelpLine, HelpFormatter

validate

public void validate(WriteableCommandLine commandLine,
                     Option option)
              throws OptionException

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

Specified by:

validate in interface Argument

Overrides:

validate in class ArgumentImpl

Parameters:

commandLine - the CommandLine to check.

option - the option to evaluate

Throws:

OptionException - if the CommandLine is not valid.

See Also:

CommandLine.getValues(Option)

canProcess

public boolean canProcess(WriteableCommandLine commandLine,
                          String arg)

Indicates whether this Option will be able to process the particular argument.

Specified by:

canProcess in interface Option

Overrides:

canProcess in class ArgumentImpl

Parameters:

commandLine - the CommandLine object to store defaults in

arg - the argument to be tested

Returns:

true if the argument can be processed by this Option