org.bukkit.craftbukkit.command.ConsoleCommandCompleter Maven / Gradle / Ivy

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package org.bukkit.craftbukkit.command;

import jline.console.completer.Completer;
import org.bukkit.craftbukkit.CraftServer;
import org.bukkit.craftbukkit.util.Waitable;

import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.logging.Level;

public class ConsoleCommandCompleter implements Completer {
  private final CraftServer server;

  public ConsoleCommandCompleter(CraftServer server) {
    this.server = server;
  }

  public int complete(final String buffer, final int cursor, final List candidates) {
    Waitable> waitable = new Waitable>() {
      @Override
      protected List evaluate() {
        return server.getCommandMap().tabComplete(server.getConsoleSender(), buffer);
      }
    };
    this.server.getServer().processQueue.add(waitable);
    try {
      List offers = waitable.get();
      if (offers == null) {
        return cursor;
      }
      candidates.addAll(offers);

      final int lastSpace = buffer.lastIndexOf(' ');
      if (lastSpace == -1) {
        return cursor - buffer.length();
      } else {
        return cursor - (buffer.length() - lastSpace - 1);
      }
    } catch (ExecutionException e) {
      this.server.getLogger().log(Level.WARNING, "Unhandled exception when tab completing", e);
    } catch (InterruptedException e) {
      Thread.currentThread().interrupt();
    }
    return cursor;
  }
}