121 lines
3.4 KiB
Java
121 lines
3.4 KiB
Java
/*
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* This file is part of ComputerCraft - http://www.computercraft.info
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* Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
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* Send enquiries to dratcliffe@gmail.com
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*/
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package dan200.computercraft.shared.command.framework;
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import com.google.common.collect.Lists;
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import dan200.computercraft.shared.command.text.ChatHelpers;
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import joptsimple.internal.Strings;
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import net.minecraft.command.CommandBase;
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import net.minecraft.command.CommandException;
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import javax.annotation.Nonnull;
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import java.util.Collections;
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import java.util.List;
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class SubCommandHelp implements ISubCommand
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{
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private final CommandRoot branchCommand;
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SubCommandHelp( CommandRoot branchCommand )
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{
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this.branchCommand = branchCommand;
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}
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@Nonnull
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@Override
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public String getName()
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{
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return "help";
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}
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@Nonnull
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@Override
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public String getFullName()
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{
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return "computercraft.help";
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}
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@Override
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public boolean checkPermission( @Nonnull CommandContext context )
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{
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return true;
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}
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@Override
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public void execute( @Nonnull CommandContext context, @Nonnull List<String> arguments ) throws CommandException
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{
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ISubCommand command = branchCommand;
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for( int i = 0; i < arguments.size(); i++ )
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{
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String commandName = arguments.get( i );
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if( command instanceof CommandRoot )
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{
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command = ((CommandRoot) command).getSubCommands().get( commandName );
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}
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else
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{
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throw new CommandException( "commands.computercraft.help.no_children", Strings.join( arguments.subList( 0, i ), " " ) );
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}
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if( command == null )
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{
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throw new CommandException( "commands.computercraft.help.no_command", Strings.join( arguments.subList( 0, i + 1 ), " " ) );
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}
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}
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StringBuilder prefix = new StringBuilder( context.parent().getFullPath() );
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for( String argument : arguments )
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{
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prefix.append( ' ' ).append( argument );
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}
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context.getSender().sendMessage( ChatHelpers.getHelp( context, command, prefix.toString() ) );
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}
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@Nonnull
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@Override
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public List<String> getCompletion( @Nonnull CommandContext context, @Nonnull List<String> arguments )
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{
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CommandRoot command = branchCommand;
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for( int i = 0; i < arguments.size() - 1; i++ )
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{
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String commandName = arguments.get( i );
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ISubCommand subCommand = command.getSubCommands().get( commandName );
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if( subCommand instanceof CommandRoot )
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{
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command = (CommandRoot) subCommand;
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}
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else
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{
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return Collections.emptyList();
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}
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}
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if( arguments.isEmpty() )
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{
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return Lists.newArrayList( command.getSubCommands().keySet() );
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}
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else
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{
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List<String> list = Lists.newArrayList();
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String match = arguments.get( arguments.size() - 1 );
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for( String entry : command.getSubCommands().keySet() )
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{
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if( CommandBase.doesStringStartWith( match, entry ) )
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{
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list.add( entry );
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}
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}
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return list;
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}
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}
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}
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