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Prevent command override using CommandManager

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This commit is contained in:
themode 2020-11-14 01:39:51 +01:00
parent 669e7ea711
commit 1a8baf36f6
4 changed files with 35 additions and 13 deletions
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30
src/main/java/net/minestom/server/command/CommandManager.java
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@ -84,7 +84,13 @@ public final class CommandManager {
*
* @param command the command to register
*/
public void register(@NotNull Command command) {
public synchronized void register(@NotNull Command command) {
Check.stateCondition(commandExists(command.getName()),
"A command with the name " + command.getName() + " is already registered!");
for (String alias : command.getAliases()) {
Check.stateCondition(commandExists(alias),
"A command with the name " + alias + " is already registered!");
}
this.dispatcher.register(command);
}
@ -104,12 +110,18 @@ public final class CommandManager {
*
* @param commandProcessor the command to register
*/
public void register(@NotNull CommandProcessor commandProcessor) {
this.commandProcessorMap.put(commandProcessor.getCommandName().toLowerCase(), commandProcessor);
public synchronized void register(@NotNull CommandProcessor commandProcessor) {
final String commandName = commandProcessor.getCommandName().toLowerCase();
Check.stateCondition(commandExists(commandName),
"A command with the name " + commandName + " is already registered!");
this.commandProcessorMap.put(commandName, commandProcessor);
// Register aliases
final String[] aliases = commandProcessor.getAliases();
if (aliases != null && aliases.length > 0) {
for (String alias : aliases) {
Check.stateCondition(commandExists(alias),
"A command with the name " + alias + " is already registered!");
this.commandProcessorMap.put(alias.toLowerCase(), commandProcessor);
}
}
@ -126,6 +138,18 @@ public final class CommandManager {
return commandProcessorMap.get(commandName.toLowerCase());
}
/**
* Gets if a command with the name {@code commandName} already exists or name.
*
* @param commandName the command name to check
* @return true if the command does exist
*/
public boolean commandExists(@NotNull String commandName) {
commandName = commandName.toLowerCase();
return dispatcher.findCommand(commandName) != null ||
commandProcessorMap.get(commandName) != null;
}
/**
* Executes a command for a {@link ConsoleSender}.
*

6
src/main/java/net/minestom/server/command/builder/CommandDispatcher.java
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@ -17,6 +17,12 @@ public class CommandDispatcher {
private final Map<String, Command> commandMap = new HashMap<>();
private final Set<Command> commands = new HashSet<>();
/**
* Registers a command,
* be aware that registering a command name or alias will override the previous entry.
*
* @param command the command to register
*/
public void register(@NotNull Command command) {
this.commandMap.put(command.getName().toLowerCase(), command);

1
src/test/java/demo/Main.java
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@ -32,7 +32,6 @@ public class Main {
commandManager.register(new EntitySelectorCommand());
commandManager.register(new HealthCommand());
commandManager.register(new SimpleCommand());
commandManager.register(new GamemodeCommand());
commandManager.register(new DimensionCommand());
commandManager.register(new ShutdownCommand());
commandManager.register(new TeleportCommand());

11
src/test/java/demo/commands/TestCommand.java
View File

@ -5,20 +5,14 @@ import net.minestom.server.command.builder.Arguments;
import net.minestom.server.command.builder.Command;
import net.minestom.server.command.builder.arguments.Argument;
import net.minestom.server.command.builder.arguments.ArgumentType;
import net.minestom.server.utils.location.RelativeVec;
public class TestCommand extends Command {
public TestCommand() {
super("testcmd");
setDefaultExecutor(this::usage);
{
//Argument dynamicWord = ArgumentType.DynamicWord("test");
//addSyntax(this::execute, dynamicWord);
}
Argument test = ArgumentType.RelativeVec2("pos");
Argument test = ArgumentType.ItemStack("test");
test.setCallback((source, value, error) -> {
System.out.println("ERROR " + error);
@ -30,8 +24,7 @@ public class TestCommand extends Command {
});
addSyntax((source, args) -> {
RelativeVec location = args.getRelativeVector("pos");
System.out.println("IT WORKS " + location.fromRelativePosition(source.asPlayer()));
System.out.println("ARG 1");
}, test);
}