001/*
002 * SPDX-FileCopyrightText: none
003 * SPDX-License-Identifier: CC0-1.0
004 */
005
006package gov.nist.secauto.metaschema.cli.processor.command;
007
008import gov.nist.secauto.metaschema.cli.processor.CLIProcessor.CallingContext;
009import gov.nist.secauto.metaschema.cli.processor.InvalidArgumentException;
010import gov.nist.secauto.metaschema.core.util.CollectionUtil;
011
012import org.apache.commons.cli.CommandLine;
013import org.apache.commons.cli.Option;
014
015import java.util.Collection;
016import java.util.List;
017
018import edu.umd.cs.findbugs.annotations.NonNull;
019
020public interface ICommand {
021  @NonNull
022  String getName();
023
024  @NonNull
025  String getDescription();
026
027  @NonNull
028  default List<ExtraArgument> getExtraArguments() {
029    return CollectionUtil.emptyList();
030  }
031
032  default int requiredExtraArgumentsCount() {
033    return (int) getExtraArguments().stream()
034        .filter(arg -> arg.isRequired())
035        .count();
036  }
037
038  @NonNull
039  default Collection<? extends Option> gatherOptions() {
040    // by default there are no options to handle
041    return CollectionUtil.emptyList();
042  }
043
044  @NonNull
045  Collection<ICommand> getSubCommands();
046
047  boolean isSubCommandRequired();
048
049  @SuppressWarnings("unused")
050  default ICommand getSubCommandByName(@NonNull String name) {
051    // no sub commands by default
052    return null;
053  }
054
055  @SuppressWarnings("unused")
056  default void validateOptions(
057      @NonNull CallingContext callingContext,
058      @NonNull CommandLine cmdLine) throws InvalidArgumentException {
059    // by default there are no options to handle
060  }
061
062  @NonNull
063  ICommandExecutor newExecutor(@NonNull CallingContext callingContext, @NonNull CommandLine cmdLine);
064}