/*
The MIT License
Copyright (c) 2004-2015 Paul R. Holser, Jr.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package joptsimple;
import java.util.
ArrayList;
import java.util.
HashMap;
import java.util.
IdentityHashMap;
import java.util.
List;
import java.util.
Map;
import static java.util.
Collections.*;
import static java.util.
Objects.*;
/**
* Representation of a group of detected command line options, their arguments, and non-option arguments.
*
* @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
*/
public class
OptionSet {
private final
List<
OptionSpec<?>>
detectedSpecs;
private final
Map<
String,
AbstractOptionSpec<?>>
detectedOptions;
private final
Map<
AbstractOptionSpec<?>,
List<
String>>
optionsToArguments;
private final
Map<
String,
AbstractOptionSpec<?>>
recognizedSpecs;
private final
Map<
String,
List<?>>
defaultValues;
/*
* Package-private because clients don't create these.
*/
OptionSet(
Map<
String,
AbstractOptionSpec<?>>
recognizedSpecs ) {
detectedSpecs = new
ArrayList<>();
detectedOptions = new
HashMap<>();
optionsToArguments = new
IdentityHashMap<>();
defaultValues =
defaultValues(
recognizedSpecs );
this.
recognizedSpecs =
recognizedSpecs;
}
/**
* Tells whether any options were detected.
*
* @return {@code true} if any options were detected
*/
public boolean
hasOptions() {
return !(
detectedOptions.
size() == 1 &&
detectedOptions.
values().
iterator().
next().
representsNonOptions() );
}
/**
* Tells whether the given option was detected.
*
* @param option the option to search for
* @return {@code true} if the option was detected
* @see #has(OptionSpec)
*/
public boolean
has(
String option ) {
return
detectedOptions.
containsKey(
option );
}
/**
* Tells whether the given option was detected.
*
* <p>This method recognizes only instances of options returned from the fluent interface methods.</p>
*
* <p>Specifying a {@linkplain ArgumentAcceptingOptionSpec#defaultsTo(Object, Object[])} default argument value}
* for an option does not cause this method to return {@code true} if the option was not detected on the command
* line.</p>
*
* @param option the option to search for
* @return {@code true} if the option was detected
* @see #has(String)
*/
public boolean
has(
OptionSpec<?>
option ) {
return
optionsToArguments.
containsKey(
option );
}
/**
* Tells whether there are any arguments associated with the given option.
*
* @param option the option to search for
* @return {@code true} if the option was detected and at least one argument was detected for the option
* @see #hasArgument(OptionSpec)
*/
public boolean
hasArgument(
String option ) {
AbstractOptionSpec<?>
spec =
detectedOptions.
get(
option );
return
spec != null &&
hasArgument(
spec );
}
/**
* Tells whether there are any arguments associated with the given option.
*
* <p>This method recognizes only instances of options returned from the fluent interface methods.</p>
*
* <p>Specifying a {@linkplain ArgumentAcceptingOptionSpec#defaultsTo(Object, Object[]) default argument value}
* for an option does not cause this method to return {@code true} if the option was not detected on the command
* line, or if the option can take an optional argument but did not have one on the command line.</p>
*
* @param option the option to search for
* @return {@code true} if the option was detected and at least one argument was detected for the option
* @throws NullPointerException if {@code option} is {@code null}
* @see #hasArgument(String)
*/
public boolean
hasArgument(
OptionSpec<?>
option ) {
requireNonNull(
option );
List<
String>
values =
optionsToArguments.
get(
option );
return
values != null && !
values.
isEmpty();
}
/**
* Gives the argument associated with the given option. If the option was given an argument type, the argument
* will take on that type; otherwise, it will be a {@link String}.
*
* <p>Specifying a {@linkplain ArgumentAcceptingOptionSpec#defaultsTo(Object, Object[]) default argument value}
* for an option will cause this method to return that default value even if the option was not detected on the
* command line, or if the option can take an optional argument but did not have one on the command line.</p>
*
* @param option the option to search for
* @return the argument of the given option; {@code null} if no argument is present, or that option was not
* detected
* @throws NullPointerException if {@code option} is {@code null}
* @throws OptionException if more than one argument was detected for the option
*/
public
Object valueOf(
String option ) {
requireNonNull(
option );
AbstractOptionSpec<?>
spec =
detectedOptions.
get(
option );
if (
spec == null ) {
List<?>
defaults =
defaultValuesFor(
option );
return
defaults.
isEmpty() ? null :
defaults.
get( 0 );
}
return
valueOf(
spec );
}
/**
* Gives the argument associated with the given option.
*
* <p>This method recognizes only instances of options returned from the fluent interface methods.</p>
*
* @param <V> represents the type of the arguments the given option accepts
* @param option the option to search for
* @return the argument of the given option; {@code null} if no argument is present, or that option was not
* detected
* @throws OptionException if more than one argument was detected for the option
* @throws NullPointerException if {@code option} is {@code null}
* @throws ClassCastException if the arguments of this option are not of the expected type
*/
public <V> V
valueOf(
OptionSpec<V>
option ) {
requireNonNull(
option );
List<V>
values =
valuesOf(
option );
switch (
values.
size() ) {
case 0:
return null;
case 1:
return
values.
get( 0 );
default:
throw new
MultipleArgumentsForOptionException(
option );
}
}
/**
* <p>Gives any arguments associated with the given option. If the option was given an argument type, the
* arguments will take on that type; otherwise, they will be {@link String}s.</p>
*
* @param option the option to search for
* @return the arguments associated with the option, as a list of objects of the type given to the arguments; an
* empty list if no such arguments are present, or if the option was not detected
* @throws NullPointerException if {@code option} is {@code null}
*/
public
List<?>
valuesOf(
String option ) {
requireNonNull(
option );
AbstractOptionSpec<?>
spec =
detectedOptions.
get(
option );
return
spec == null ?
defaultValuesFor(
option ) :
valuesOf(
spec );
}
/**
* <p>Gives any arguments associated with the given option. If the option was given an argument type, the
* arguments will take on that type; otherwise, they will be {@link String}s.</p>
*
* <p>This method recognizes only instances of options returned from the fluent interface methods.</p>
*
* @param <V> represents the type of the arguments the given option accepts
* @param option the option to search for
* @return the arguments associated with the option; an empty list if no such arguments are present, or if the
* option was not detected
* @throws NullPointerException if {@code option} is {@code null}
* @throws OptionException if there is a problem converting the option's arguments to the desired type; for
* example, if the type does not implement a correct conversion constructor or method
*/
public <V>
List<V>
valuesOf(
OptionSpec<V>
option ) {
requireNonNull(
option );
List<
String>
values =
optionsToArguments.
get(
option );
if (
values == null ||
values.
isEmpty() )
return
defaultValueFor(
option );
AbstractOptionSpec<V>
spec = (
AbstractOptionSpec<V>)
option;
List<V>
convertedValues = new
ArrayList<>();
for (
String each :
values )
convertedValues.
add(
spec.
convert(
each ) );
return
unmodifiableList(
convertedValues );
}
/**
* Gives the set of options that were detected, in the form of {@linkplain OptionSpec}s, in the order in which the
* options were found on the command line.
*
* @return the set of detected command line options
*/
public
List<
OptionSpec<?>>
specs() {
List<
OptionSpec<?>>
specs =
detectedSpecs;
specs.
removeAll(
singletonList(
detectedOptions.
get(
NonOptionArgumentSpec.
NAME ) ) );
return
unmodifiableList(
specs );
}
/**
* Gives all declared options as a map of string to {@linkplain OptionSpec}.
*
* @return the declared options as a map
*/
public
Map<
OptionSpec<?>,
List<?>>
asMap() {
Map<
OptionSpec<?>,
List<?>>
map = new
HashMap<>();
for (
AbstractOptionSpec<?>
spec :
recognizedSpecs.
values() ) {
if ( !
spec.
representsNonOptions() )
map.
put(
spec,
valuesOf(
spec ) );
}
return
unmodifiableMap(
map );
}
/**
* @return the detected non-option arguments
*/
public
List<?>
nonOptionArguments() {
AbstractOptionSpec<?>
spec =
detectedOptions.
get(
NonOptionArgumentSpec.
NAME );
return
valuesOf(
spec );
}
void
add(
AbstractOptionSpec<?>
spec ) {
addWithArgument(
spec, null );
}
void
addWithArgument(
AbstractOptionSpec<?>
spec,
String argument ) {
detectedSpecs.
add(
spec );
for (
String each :
spec.
options() )
detectedOptions.
put(
each,
spec );
List<
String>
optionArguments =
optionsToArguments.
get(
spec );
if (
optionArguments == null ) {
optionArguments = new
ArrayList<>();
optionsToArguments.
put(
spec,
optionArguments );
}
if (
argument != null )
optionArguments.
add(
argument );
}
@
Override
public boolean
equals(
Object that ) {
if ( this ==
that )
return true;
if (
that == null || !
getClass().
equals(
that.
getClass() ) )
return false;
OptionSet other = (
OptionSet)
that;
Map<
AbstractOptionSpec<?>,
List<
String>>
thisOptionsToArguments = new
HashMap<>(
optionsToArguments );
Map<
AbstractOptionSpec<?>,
List<
String>>
otherOptionsToArguments = new
HashMap<>(
other.
optionsToArguments );
return
detectedOptions.
equals(
other.
detectedOptions )
&&
thisOptionsToArguments.
equals(
otherOptionsToArguments );
}
@
Override
public int
hashCode() {
Map<
AbstractOptionSpec<?>,
List<
String>>
thisOptionsToArguments = new
HashMap<>(
optionsToArguments );
return
detectedOptions.
hashCode() ^
thisOptionsToArguments.
hashCode();
}
@
SuppressWarnings( "unchecked" )
private <V>
List<V>
defaultValuesFor(
String option ) {
if (
defaultValues.
containsKey(
option ) )
return
unmodifiableList( (
List<V>)
defaultValues.
get(
option ) );
return
emptyList();
}
private <V>
List<V>
defaultValueFor(
OptionSpec<V>
option ) {
return
defaultValuesFor(
option.
options().
iterator().
next() );
}
private static
Map<
String,
List<?>>
defaultValues(
Map<
String,
AbstractOptionSpec<?>>
recognizedSpecs ) {
Map<
String,
List<?>>
defaults = new
HashMap<>();
for (
Map.
Entry<
String,
AbstractOptionSpec<?>>
each :
recognizedSpecs.
entrySet() )
defaults.
put(
each.
getKey(),
each.
getValue().
defaultValues() );
return
defaults;
}
}