Class ArgumentAcceptingOptionSpec<V>

java.lang.Object
joptsimple.AbstractOptionSpec<V>
joptsimple.ArgumentAcceptingOptionSpec<V>
Type Parameters:
V - represents the type of the arguments this option accepts
All Implemented Interfaces:
OptionDescriptor, OptionSpec<V>
Direct Known Subclasses:
AlternativeLongOptionSpec, OptionalArgumentOptionSpec, RequiredArgumentOptionSpec
public abstract class ArgumentAcceptingOptionSpec<V> extends AbstractOptionSpec<V>

Specification of an option that accepts an argument.

Instances are returned from OptionSpecBuilder methods to allow the formation of parser directives as sentences in a "fluent interface" language. For example:

  
  OptionParser parser = new OptionParser();
  parser.accepts( "c" ).withRequiredArg().ofType( Integer.class );

If no methods are invoked on an instance of this class, then that instance's option will treat its argument as a String.

  • Field Details

    • NIL_VALUE_SEPARATOR

      private static final char NIL_VALUE_SEPARATOR
      See Also:

    • argumentRequired

      private final boolean argumentRequired

    • defaultValues

      private final List<V> defaultValues

    • optionRequired

      private boolean optionRequired

    • converter

      private ValueConverter<V> converter

    • argumentDescription

      private String argumentDescription

    • valueSeparator

      private String valueSeparator

  • Constructor Details

    • ArgumentAcceptingOptionSpec

      ArgumentAcceptingOptionSpec(String option, boolean argumentRequired)

    • ArgumentAcceptingOptionSpec

      ArgumentAcceptingOptionSpec(List<String> options, boolean argumentRequired, String description)

  • Method Details

    • ofType

      public final <T> ArgumentAcceptingOptionSpec<T> ofType(Class<T> argumentType)

      Specifies a type to which arguments of this spec's option are to be converted.

      JOpt Simple accepts types that have either:

      1. a public static method called valueOf which accepts a single argument of type String and whose return type is the same as the class on which the method is declared. The java.lang primitive wrapper classes have such methods.
      2. a public constructor which accepts a single argument of type String.

      This class converts arguments using those methods in that order; that is, valueOf would be invoked before a one-String-arg constructor would.

      Invoking this method will trump any previous calls to this method or to withValuesConvertedBy(ValueConverter).

      Type Parameters:
      T - represents the runtime class of the desired option argument type
      Parameters:
      argumentType - desired type of arguments to this spec's option
      Returns:
      self, so that the caller can add clauses to the fluent interface sentence
      Throws:
      NullPointerException - if the type is null
      IllegalArgumentException - if the type does not have the standard conversion methods

    • withValuesConvertedBy

      public final <T> ArgumentAcceptingOptionSpec<T> withValuesConvertedBy(ValueConverter<T> aConverter)

      Specifies a converter to use to translate arguments of this spec's option into Java objects. This is useful when converting to types that do not have the requisite factory method or constructor for ofType(Class).

      Invoking this method will trump any previous calls to this method or to ofType(Class).

      Type Parameters:
      T - represents the runtime class of the desired option argument type
      Parameters:
      aConverter - the converter to use
      Returns:
      self, so that the caller can add clauses to the fluent interface sentence
      Throws:
      NullPointerException - if the converter is null

    • describedAs

      public final ArgumentAcceptingOptionSpec<V> describedAs(String description)

      Specifies a description for the argument of the option that this spec represents. This description is used when generating help information about the parser.

      Parameters:
      description - describes the nature of the argument of this spec's option
      Returns:
      self, so that the caller can add clauses to the fluent interface sentence

    • withValuesSeparatedBy

      public final ArgumentAcceptingOptionSpec<V> withValuesSeparatedBy(char separator)

      Specifies a value separator for the argument of the option that this spec represents. This allows a single option argument to represent multiple values for the option. For example:

        
  parser.accepts( "z" ).withRequiredArg()
      .withValuesSeparatedBy( ',' );
  OptionSet options = parser.parse( new String[] { "-z", "foo,bar,baz", "-z",
      "fizz", "-z", "buzz" } );

      Then options.valuesOf( "z" ) would yield the list [foo, bar, baz, fizz, buzz].

      You cannot use Unicode U+0000 as the separator.

      Parameters:
      separator - a character separator
      Returns:
      self, so that the caller can add clauses to the fluent interface sentence
      Throws:
      IllegalArgumentException - if the separator is Unicode U+0000

    • withValuesSeparatedBy

      public final ArgumentAcceptingOptionSpec<V> withValuesSeparatedBy(String separator)

      Specifies a value separator for the argument of the option that this spec represents. This allows a single option argument to represent multiple values for the option. For example:

        
  parser.accepts( "z" ).withRequiredArg()
      .withValuesSeparatedBy( ":::" );
  OptionSet options = parser.parse( new String[] { "-z", "foo:::bar:::baz", "-z",
      "fizz", "-z", "buzz" } );

      Then options.valuesOf( "z" ) would yield the list [foo, bar, baz, fizz, buzz].

      You cannot use Unicode U+0000 in the separator.

      Parameters:
      separator - a string separator
      Returns:
      self, so that the caller can add clauses to the fluent interface sentence
      Throws:
      IllegalArgumentException - if the separator contains Unicode U+0000

    • defaultsTo

      @SafeVarargs public final ArgumentAcceptingOptionSpec<V> defaultsTo(V value, V... values)
      Specifies a set of default values for the argument of the option that this spec represents.
      Parameters:
      value - the first in the set of default argument values for this spec's option
      values - the (optional) remainder of the set of default argument values for this spec's option
      Returns:
      self, so that the caller can add clauses to the fluent interface sentence
      Throws:
      NullPointerException - if value, values, or any elements of values are null

    • defaultsTo

      public ArgumentAcceptingOptionSpec<V> defaultsTo(V[] values)
      Specifies a set of default values for the argument of the option that this spec represents.
      Parameters:
      values - the set of default argument values for this spec's option
      Returns:
      self, so that the caller can add clauses to the fluent interface sentence
      Throws:
      NullPointerException - if values or any elements of values are null

    • required

      public ArgumentAcceptingOptionSpec<V> required()
      Marks this option as required. An OptionException will be thrown when OptionParser.parse(java.lang.String...) is called, if an option is marked as required and not specified on the command line.
      Returns:
      self, so that the caller can add clauses to the fluent interface sentence

    • isRequired

      public boolean isRequired()
      Description copied from interface: OptionDescriptor
      Is this option required on a command line?
      Returns:
      whether the option is required

    • addDefaultValue

      private void addDefaultValue(V value)

    • handleOption

      final void handleOption(OptionParser parser, ArgumentList arguments, OptionSet detectedOptions, String detectedArgument)
      Specified by:
      handleOption in class AbstractOptionSpec<V>

    • addArguments

      protected void addArguments(OptionSet detectedOptions, String detectedArgument)

    • detectOptionArgument

      protected abstract void detectOptionArgument(OptionParser parser, ArgumentList arguments, OptionSet detectedOptions)

    • convert

      protected final V convert(String argument)
      Specified by:
      convert in class AbstractOptionSpec<V>

    • canConvertArgument

      protected boolean canConvertArgument(String argument)

    • isArgumentOfNumberType

      protected boolean isArgumentOfNumberType()

    • acceptsArguments

      public boolean acceptsArguments()
      Description copied from interface: OptionDescriptor
      Does this option accept arguments?
      Returns:
      whether the option accepts arguments

    • requiresArgument

      public boolean requiresArgument()
      Description copied from interface: OptionDescriptor
      Does this option require an argument?
      Returns:
      whether the option requires an argument

    • argumentDescription

      public String argumentDescription()
      Description copied from interface: OptionDescriptor
      Gives a short description of the option's argument.
      Returns:
      a description for the option's argument

    • argumentTypeIndicator

      public String argumentTypeIndicator()
      Description copied from interface: OptionDescriptor
      Gives an indication of the expected type of the option's argument.
      Returns:
      a description for the option's argument type

    • defaultValues

      public List<V> defaultValues()
      Description copied from interface: OptionDescriptor
      What values will the option take if none are specified on the command line?
      Returns:
      any default values for the option

    • equals

      public boolean equals(Object that)
      Overrides:
      equals in class AbstractOptionSpec<V>

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class AbstractOptionSpec<V>