JDK 17 jdk.internal.opt.jmod - Internal Opt Module
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⏎ jdk/internal/joptsimple/OptionParser.java
/*
* Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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/*
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* 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 jdk.internal.joptsimple;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.*;
import jdk.internal.joptsimple.internal.AbbreviationMap;
import jdk.internal.joptsimple.internal.SimpleOptionNameMap;
import jdk.internal.joptsimple.internal.OptionNameMap;
import jdk.internal.joptsimple.util.KeyValuePair;
import static java.util.Collections.*;
import static jdk.internal.joptsimple.OptionException.*;
import static jdk.internal.joptsimple.OptionParserState.*;
import static jdk.internal.joptsimple.ParserRules.*;
/**
* <p>Parses command line arguments, using a syntax that attempts to take from the best of POSIX {@code getopt()}
* and GNU {@code getopt_long()}.</p>
*
* <p>This parser supports short options and long options.</p>
*
* <ul>
* <li><dfn>Short options</dfn> begin with a single hyphen ("{@code -}") followed by a single letter or digit,
* or question mark ("{@code ?}"), or dot ("{@code .}"), or underscore ("{@code _}").</li>
*
* <li>Short options can accept single arguments. The argument can be made required or optional. The option's
* argument can occur:
* <ul>
* <li>in the slot after the option, as in {@code -d /tmp}</li>
* <li>right up against the option, as in {@code -d/tmp}</li>
* <li>right up against the option separated by an equals sign ({@code "="}), as in {@code -d=/tmp}</li>
* </ul>
* To specify <em>n</em> arguments for an option, specify the option <em>n</em> times, once for each argument,
* as in {@code -d /tmp -d /var -d /opt}; or, when using the
* {@linkplain ArgumentAcceptingOptionSpec#withValuesSeparatedBy(char) "separated values"} clause of the "fluent
* interface" (see below), give multiple values separated by a given character as a single argument to the
* option.</li>
*
* <li>Short options can be clustered, so that {@code -abc} is treated as {@code -a -b -c}. If a short option
* in the cluster can accept an argument, the remaining characters are interpreted as the argument for that
* option.</li>
*
* <li>An argument consisting only of two hyphens ({@code "--"}) signals that the remaining arguments are to be
* treated as non-options.</li>
*
* <li>An argument consisting only of a single hyphen is considered a non-option argument (though it can be an
* argument of an option). Many Unix programs treat single hyphens as stand-ins for the standard input or standard
* output streams.</li>
*
* <li><dfn>Long options</dfn> begin with two hyphens ({@code "--"}), followed by multiple letters, digits,
* hyphens, question marks, or dots. A hyphen cannot be the first character of a long option specification when
* configuring the parser.</li>
*
* <li>You can abbreviate long options, so long as the abbreviation is unique. Suppress this behavior if
* you wish using {@linkplain OptionParser#OptionParser(boolean) this constructor}.</li>
*
* <li>Long options can accept single arguments. The argument can be made required or optional. The option's
* argument can occur:
* <ul>
* <li>in the slot after the option, as in {@code --directory /tmp}</li>
* <li>right up against the option separated by an equals sign ({@code "="}), as in
* {@code --directory=/tmp}
* </ul>
* Specify multiple arguments for a long option in the same manner as for short options (see above).</li>
*
* <li>You can use a single hyphen ({@code "-"}) instead of a double hyphen ({@code "--"}) for a long
* option.</li>
*
* <li>The option {@code -W} is reserved. If you tell the parser to {@linkplain
* #recognizeAlternativeLongOptions(boolean) recognize alternative long options}, then it will treat, for example,
* {@code -W foo=bar} as the long option {@code foo} with argument {@code bar}, as though you had written
* {@code --foo=bar}.</li>
*
* <li>You can specify {@code -W} as a valid short option, or use it as an abbreviation for a long option, but
* {@linkplain #recognizeAlternativeLongOptions(boolean) recognizing alternative long options} will always supersede
* this behavior.</li>
*
* <li>You can specify a given short or long option multiple times on a single command line. The parser collects
* any arguments specified for those options as a list.</li>
*
* <li>If the parser detects an option whose argument is optional, and the next argument "looks like" an option,
* that argument is not treated as the argument to the option, but as a potentially valid option. If, on the other
* hand, the optional argument is typed as a derivative of {@link Number}, then that argument is treated as the
* negative number argument of the option, even if the parser recognizes the corresponding numeric option.
* For example:
* <pre><code>
* OptionParser parser = new OptionParser();
* parser.accepts( "a" ).withOptionalArg().ofType( Integer.class );
* parser.accepts( "2" );
* OptionSet options = parser.parse( "-a", "-2" );
* </code></pre>
* In this case, the option set contains {@code "a"} with argument {@code -2}, not both {@code "a"} and
* {@code "2"}. Swapping the elements in the <em>args</em> array gives the latter.</li>
* </ul>
*
* <p>There are two ways to tell the parser what options to recognize:</p>
*
* <ol>
* <li>A "fluent interface"-style API for specifying options, available since version 2. Sentences in this fluent
* interface language begin with a call to {@link #accepts(String) accepts} or {@link #acceptsAll(List)
* acceptsAll} methods; calls on the ensuing chain of objects describe whether the options can take an argument,
* whether the argument is required or optional, to what type arguments of the options should be converted if any,
* etc. Since version 3, these calls return an instance of {@link OptionSpec}, which can subsequently be used to
* retrieve the arguments of the associated option in a type-safe manner.</li>
*
* <li>Since version 1, a more concise way of specifying short options has been to use the special {@linkplain
* #OptionParser(String) constructor}. Arguments of options specified in this manner will be of type {@link String}.
* Here are the rules for the format of the specification strings this constructor accepts:
*
* <ul>
* <li>Any letter or digit is treated as an option character.</li>
*
* <li>An option character can be immediately followed by an asterisk ({@code *)} to indicate that
* the option is a "help" option.</li>
*
* <li>If an option character (with possible trailing asterisk) is followed by a single colon ({@code ":"}),
* then the option requires an argument.</li>
*
* <li>If an option character (with possible trailing asterisk) is followed by two colons ({@code "::"}),
* then the option accepts an optional argument.</li>
*
* <li>Otherwise, the option character accepts no argument.</li>
*
* <li>If the option specification string begins with a plus sign ({@code "+" }), the parser will behave
* "POSIX-ly correct".</li>
*
* <li>If the option specification string contains the sequence {@code "W;"} (capital W followed by a
* semicolon), the parser will recognize the alternative form of long options.</li>
* </ul>
* </li>
* </ol>
*
* <p>Each of the options in a list of options given to {@link #acceptsAll(List) acceptsAll} is treated as a
* synonym of the others. For example:</p>
* <pre>
* <code>
* OptionParser parser = new OptionParser();
* parser.acceptsAll( asList( "w", "interactive", "confirmation" ) );
* OptionSet options = parser.parse( "-w" );
* </code>
* </pre>
* <p>In this case, <code>options.{@link OptionSet#has(String) has}</code> would answer {@code true} when given arguments
* {@code "w"}, {@code "interactive"}, and {@code "confirmation"}. The {@link OptionSet} would give the same
* responses to these arguments for its other methods as well.</p>
*
* <p>By default, as with GNU {@code getopt()}, the parser allows intermixing of options and non-options. If, however,
* the parser has been created to be "POSIX-ly correct", then the first argument that does not look lexically like an
* option, and is not a required argument of a preceding option, signals the end of options. You can still bind
* optional arguments to their options using the abutting (for short options) or {@code =} syntax.</p>
*
* <p>Unlike GNU {@code getopt()}, this parser does not honor the environment variable {@code POSIXLY_CORRECT}.
* "POSIX-ly correct" parsers are configured by either:</p>
*
* <ol>
* <li>using the method {@link #posixlyCorrect(boolean)}, or</li>
*
* <li>using the {@linkplain #OptionParser(String) constructor} with an argument whose first character is a plus sign
* ({@code "+"})</li>
* </ol>
*
* @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
* @see <a href="http://www.gnu.org/software/libc/manual">The GNU C Library</a>
*/
public class OptionParser implements OptionDeclarer {
private final OptionNameMap<AbstractOptionSpec<?>> recognizedOptions;
private final ArrayList<AbstractOptionSpec<?>> trainingOrder;
private final Map<List<String>, Set<OptionSpec<?>>> requiredIf;
private final Map<List<String>, Set<OptionSpec<?>>> requiredUnless;
private final Map<List<String>, Set<OptionSpec<?>>> availableIf;
private final Map<List<String>, Set<OptionSpec<?>>> availableUnless;
private OptionParserState state;
private boolean posixlyCorrect;
private boolean allowsUnrecognizedOptions;
private HelpFormatter helpFormatter = new BuiltinHelpFormatter();
/**
* Creates an option parser that initially recognizes no options, and does not exhibit "POSIX-ly correct"
* behavior.
*/
public OptionParser() {
this(true);
}
/**
* Creates an option parser that initially recognizes no options, and does not exhibit "POSIX-ly correct"
* behavior.
*
* @param allowAbbreviations whether unambiguous abbreviations of long options should be recognized
* by the parser
*/
public OptionParser( boolean allowAbbreviations ) {
trainingOrder = new ArrayList<>();
requiredIf = new HashMap<>();
requiredUnless = new HashMap<>();
availableIf = new HashMap<>();
availableUnless = new HashMap<>();
state = moreOptions( false );
recognizedOptions = allowAbbreviations
? new AbbreviationMap<AbstractOptionSpec<?>>()
: new SimpleOptionNameMap<AbstractOptionSpec<?>>();
recognize( new NonOptionArgumentSpec<String>() );
}
/**
* Creates an option parser and configures it to recognize the short options specified in the given string.
*
* Arguments of options specified this way will be of type {@link String}.
*
* @param optionSpecification an option specification
* @throws NullPointerException if {@code optionSpecification} is {@code null}
* @throws OptionException if the option specification contains illegal characters or otherwise cannot be
* recognized
*/
public OptionParser( String optionSpecification ) {
this();
new OptionSpecTokenizer( optionSpecification ).configure( this );
}
public OptionSpecBuilder accepts( String option ) {
return acceptsAll( singletonList( option ) );
}
public OptionSpecBuilder accepts( String option, String description ) {
return acceptsAll( singletonList( option ), description );
}
public OptionSpecBuilder acceptsAll( List<String> options ) {
return acceptsAll( options, "" );
}
public OptionSpecBuilder acceptsAll( List<String> options, String description ) {
if ( options.isEmpty() )
throw new IllegalArgumentException( "need at least one option" );
ensureLegalOptions( options );
return new OptionSpecBuilder( this, options, description );
}
public NonOptionArgumentSpec<String> nonOptions() {
NonOptionArgumentSpec<String> spec = new NonOptionArgumentSpec<>();
recognize( spec );
return spec;
}
public NonOptionArgumentSpec<String> nonOptions( String description ) {
NonOptionArgumentSpec<String> spec = new NonOptionArgumentSpec<>( description );
recognize( spec );
return spec;
}
public void posixlyCorrect( boolean setting ) {
posixlyCorrect = setting;
state = moreOptions( setting );
}
boolean posixlyCorrect() {
return posixlyCorrect;
}
public void allowsUnrecognizedOptions() {
allowsUnrecognizedOptions = true;
}
boolean doesAllowsUnrecognizedOptions() {
return allowsUnrecognizedOptions;
}
public void recognizeAlternativeLongOptions( boolean recognize ) {
if ( recognize )
recognize( new AlternativeLongOptionSpec() );
else
recognizedOptions.remove( String.valueOf( RESERVED_FOR_EXTENSIONS ) );
}
void recognize( AbstractOptionSpec<?> spec ) {
recognizedOptions.putAll( spec.options(), spec );
trainingOrder.add( spec );
}
/**
* Writes information about the options this parser recognizes to the given output sink.
*
* The output sink is flushed, but not closed.
*
* @param sink the sink to write information to
* @throws IOException if there is a problem writing to the sink
* @throws NullPointerException if {@code sink} is {@code null}
* @see #printHelpOn(Writer)
*/
public void printHelpOn( OutputStream sink ) throws IOException {
printHelpOn( new OutputStreamWriter( sink ) );
}
/**
* Writes information about the options this parser recognizes to the given output sink.
*
* The output sink is flushed, but not closed.
*
* @param sink the sink to write information to
* @throws IOException if there is a problem writing to the sink
* @throws NullPointerException if {@code sink} is {@code null}
* @see #printHelpOn(OutputStream)
*/
public void printHelpOn( Writer sink ) throws IOException {
sink.write( helpFormatter.format( _recognizedOptions() ) );
sink.flush();
}
/**
* Tells the parser to use the given formatter when asked to {@linkplain #printHelpOn(java.io.Writer) print help}.
*
* @param formatter the formatter to use for printing help
* @throws NullPointerException if the formatter is {@code null}
*/
public void formatHelpWith( HelpFormatter formatter ) {
if ( formatter == null )
throw new NullPointerException();
helpFormatter = formatter;
}
/**
* Retrieves all options-spec pairings which have been configured for the parser in the same order as declared
* during training. Option flags for specs are alphabetized by {@link OptionSpec#options()}; only the order of the
* specs is preserved.
*
* (Note: prior to 4.7 the order was alphabetical across all options regardless of spec.)
*
* @return a map containing all the configured options and their corresponding {@link OptionSpec}
* @since 4.6
*/
public Map<String, OptionSpec<?>> recognizedOptions() {
return new LinkedHashMap<String, OptionSpec<?>>( _recognizedOptions() );
}
private Map<String, AbstractOptionSpec<?>> _recognizedOptions() {
Map<String, AbstractOptionSpec<?>> options = new LinkedHashMap<>();
for ( AbstractOptionSpec<?> spec : trainingOrder ) {
for ( String option : spec.options() )
options.put( option, spec );
}
return options;
}
/**
* Parses the given command line arguments according to the option specifications given to the parser.
*
* @param arguments arguments to parse
* @return an {@link OptionSet} describing the parsed options, their arguments, and any non-option arguments found
* @throws OptionException if problems are detected while parsing
* @throws NullPointerException if the argument list is {@code null}
*/
public OptionSet parse( String... arguments ) {
ArgumentList argumentList = new ArgumentList( arguments );
OptionSet detected = new OptionSet( recognizedOptions.toJavaUtilMap() );
detected.add( recognizedOptions.get( NonOptionArgumentSpec.NAME ) );
while ( argumentList.hasMore() )
state.handleArgument( this, argumentList, detected );
reset();
ensureRequiredOptions( detected );
ensureAllowedOptions( detected );
return detected;
}
/**
* Mandates mutual exclusiveness for the options built by the specified builders.
*
* @param specs descriptors for options that should be mutually exclusive on a command line.
* @throws NullPointerException if {@code specs} is {@code null}
*/
public void mutuallyExclusive( OptionSpecBuilder... specs ) {
for ( int i = 0; i < specs.length; i++ ) {
for ( int j = 0; j < specs.length; j++ ) {
if ( i != j )
specs[i].availableUnless( specs[j] );
}
}
}
private void ensureRequiredOptions( OptionSet options ) {
List<AbstractOptionSpec<?>> missingRequiredOptions = missingRequiredOptions(options);
boolean helpOptionPresent = isHelpOptionPresent( options );
if ( !missingRequiredOptions.isEmpty() && !helpOptionPresent )
throw new MissingRequiredOptionsException( missingRequiredOptions );
}
private void ensureAllowedOptions( OptionSet options ) {
List<AbstractOptionSpec<?>> forbiddenOptions = unavailableOptions( options );
boolean helpOptionPresent = isHelpOptionPresent( options );
if ( !forbiddenOptions.isEmpty() && !helpOptionPresent )
throw new UnavailableOptionException( forbiddenOptions );
}
private List<AbstractOptionSpec<?>> missingRequiredOptions( OptionSet options ) {
List<AbstractOptionSpec<?>> missingRequiredOptions = new ArrayList<>();
for ( AbstractOptionSpec<?> each : recognizedOptions.toJavaUtilMap().values() ) {
if ( each.isRequired() && !options.has( each ) )
missingRequiredOptions.add(each);
}
for ( Map.Entry<List<String>, Set<OptionSpec<?>>> each : requiredIf.entrySet() ) {
AbstractOptionSpec<?> required = specFor( each.getKey().iterator().next() );
if ( optionsHasAnyOf( options, each.getValue() ) && !options.has( required ) )
missingRequiredOptions.add( required );
}
for ( Map.Entry<List<String>, Set<OptionSpec<?>>> each : requiredUnless.entrySet() ) {
AbstractOptionSpec<?> required = specFor(each.getKey().iterator().next());
if ( !optionsHasAnyOf( options, each.getValue() ) && !options.has( required ) )
missingRequiredOptions.add( required );
}
return missingRequiredOptions;
}
private List<AbstractOptionSpec<?>> unavailableOptions(OptionSet options) {
List<AbstractOptionSpec<?>> unavailableOptions = new ArrayList<>();
for ( Map.Entry<List<String>, Set<OptionSpec<?>>> eachEntry : availableIf.entrySet() ) {
AbstractOptionSpec<?> forbidden = specFor( eachEntry.getKey().iterator().next() );
if ( !optionsHasAnyOf( options, eachEntry.getValue() ) && options.has( forbidden ) ) {
unavailableOptions.add(forbidden);
}
}
for ( Map.Entry<List<String>, Set<OptionSpec<?>>> eachEntry : availableUnless.entrySet() ) {
AbstractOptionSpec<?> forbidden = specFor( eachEntry.getKey().iterator().next() );
if ( optionsHasAnyOf( options, eachEntry.getValue() ) && options.has( forbidden ) ) {
unavailableOptions.add(forbidden);
}
}
return unavailableOptions;
}
private boolean optionsHasAnyOf( OptionSet options, Collection<OptionSpec<?>> specs ) {
for ( OptionSpec<?> each : specs ) {
if ( options.has( each ) )
return true;
}
return false;
}
private boolean isHelpOptionPresent( OptionSet options ) {
boolean helpOptionPresent = false;
for ( AbstractOptionSpec<?> each : recognizedOptions.toJavaUtilMap().values() ) {
if ( each.isForHelp() && options.has( each ) ) {
helpOptionPresent = true;
break;
}
}
return helpOptionPresent;
}
void handleLongOptionToken( String candidate, ArgumentList arguments, OptionSet detected ) {
KeyValuePair optionAndArgument = parseLongOptionWithArgument( candidate );
if ( !isRecognized( optionAndArgument.key ) )
throw unrecognizedOption( optionAndArgument.key );
AbstractOptionSpec<?> optionSpec = specFor( optionAndArgument.key );
optionSpec.handleOption( this, arguments, detected, optionAndArgument.value );
}
void handleShortOptionToken( String candidate, ArgumentList arguments, OptionSet detected ) {
KeyValuePair optionAndArgument = parseShortOptionWithArgument( candidate );
if ( isRecognized( optionAndArgument.key ) ) {
specFor( optionAndArgument.key ).handleOption( this, arguments, detected, optionAndArgument.value );
}
else
handleShortOptionCluster( candidate, arguments, detected );
}
private void handleShortOptionCluster( String candidate, ArgumentList arguments, OptionSet detected ) {
char[] options = extractShortOptionsFrom( candidate );
validateOptionCharacters( options );
for ( int i = 0; i < options.length; i++ ) {
AbstractOptionSpec<?> optionSpec = specFor( options[ i ] );
if ( optionSpec.acceptsArguments() && options.length > i + 1 ) {
String detectedArgument = String.valueOf( options, i + 1, options.length - 1 - i );
optionSpec.handleOption( this, arguments, detected, detectedArgument );
break;
}
optionSpec.handleOption( this, arguments, detected, null );
}
}
void handleNonOptionArgument( String candidate, ArgumentList arguments, OptionSet detectedOptions ) {
specFor( NonOptionArgumentSpec.NAME ).handleOption( this, arguments, detectedOptions, candidate );
}
void noMoreOptions() {
state = OptionParserState.noMoreOptions();
}
boolean looksLikeAnOption( String argument ) {
return isShortOptionToken( argument ) || isLongOptionToken( argument );
}
boolean isRecognized( String option ) {
return recognizedOptions.contains( option );
}
void requiredIf( List<String> precedentSynonyms, String required ) {
requiredIf( precedentSynonyms, specFor( required ) );
}
void requiredIf( List<String> precedentSynonyms, OptionSpec<?> required ) {
putDependentOption( precedentSynonyms, required, requiredIf );
}
void requiredUnless( List<String> precedentSynonyms, String required ) {
requiredUnless( precedentSynonyms, specFor( required ) );
}
void requiredUnless( List<String> precedentSynonyms, OptionSpec<?> required ) {
putDependentOption( precedentSynonyms, required, requiredUnless );
}
void availableIf( List<String> precedentSynonyms, String available ) {
availableIf( precedentSynonyms, specFor( available ) );
}
void availableIf( List<String> precedentSynonyms, OptionSpec<?> available) {
putDependentOption( precedentSynonyms, available, availableIf );
}
void availableUnless( List<String> precedentSynonyms, String available ) {
availableUnless( precedentSynonyms, specFor( available ) );
}
void availableUnless( List<String> precedentSynonyms, OptionSpec<?> available ) {
putDependentOption( precedentSynonyms, available, availableUnless );
}
private void putDependentOption( List<String> precedentSynonyms, OptionSpec<?> required,
Map<List<String>, Set<OptionSpec<?>>> target ) {
for ( String each : precedentSynonyms ) {
AbstractOptionSpec<?> spec = specFor( each );
if ( spec == null )
throw new UnconfiguredOptionException( precedentSynonyms );
}
Set<OptionSpec<?>> associated = target.get( precedentSynonyms );
if ( associated == null ) {
associated = new HashSet<>();
target.put( precedentSynonyms, associated );
}
associated.add( required );
}
private AbstractOptionSpec<?> specFor( char option ) {
return specFor( String.valueOf( option ) );
}
private AbstractOptionSpec<?> specFor( String option ) {
return recognizedOptions.get( option );
}
private void reset() {
state = moreOptions( posixlyCorrect );
}
private static char[] extractShortOptionsFrom( String argument ) {
char[] options = new char[ argument.length() - 1 ];
argument.getChars( 1, argument.length(), options, 0 );
return options;
}
private void validateOptionCharacters( char[] options ) {
for ( char each : options ) {
String option = String.valueOf( each );
if ( !isRecognized( option ) )
throw unrecognizedOption( option );
if ( specFor( option ).acceptsArguments() )
return;
}
}
private static KeyValuePair parseLongOptionWithArgument( String argument ) {
return KeyValuePair.valueOf( argument.substring( 2 ) );
}
private static KeyValuePair parseShortOptionWithArgument( String argument ) {
return KeyValuePair.valueOf( argument.substring( 1 ) );
}
}
⏎ jdk/internal/joptsimple/OptionParser.java
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