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AbstractCommand.java
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AbstractCommand.java
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package com.denizenscript.denizencore.scripts.commands;
import com.denizenscript.denizencore.exceptions.CommandExecutionException;
import com.denizenscript.denizencore.exceptions.InvalidArgumentsException;
import com.denizenscript.denizencore.DenizenCore;
import com.denizenscript.denizencore.scripts.ScriptEntry;
import com.denizenscript.denizencore.utilities.CoreUtilities;
import com.denizenscript.denizencore.utilities.debugging.Debug;
import java.util.ArrayList;
import java.util.List;
public abstract class AbstractCommand {
/**
* Contains required options for a Command in a single class for the
* ability to add optional options in the future.
* <p/>
* See {@link #withOptions} for information on using CommandOptions with this command.
*/
public class CommandOptions {
public String syntax;
public int requiredArgs;
public List<String> flatArgs = new ArrayList<>();
public List<String> prefixes = new ArrayList<>();
public CommandOptions(String syntax, int numberOfRequiredArgs) {
this.syntax = syntax;
this.requiredArgs = numberOfRequiredArgs;
int firstSpace = syntax.indexOf(' ');
if (firstSpace < 0) {
return;
}
String cleaned = syntax.substring(firstSpace).replace("/", " ");
cleaned = cleaned.replace("[", "").replace("]", "").replace("(", "").replace(")", "").replace("{", "").replace("}", "");
List<String> args = CoreUtilities.split(cleaned, ' ');
for (String arg : args) {
if (arg.isEmpty()) {
continue;
}
int colonIndex = arg.indexOf(':');
if (colonIndex > 0) {
String prefix = arg.substring(0, colonIndex);
if (!prefix.contains("<")) {
prefixes.add(prefix);
}
}
else if (!arg.contains("<") && !arg.contains("|")) {
flatArgs.add(arg);
}
}
if (Debug.verbose) {
Debug.log("Command syntax '" + syntax + "' parsed to flat args: ( " + String.join(", ", flatArgs) + " ) and prefixes ( " + String.join(", ", prefixes) + " ).");
}
}
}
private boolean braced = false;
public void setBraced() {
braced = true;
}
public boolean isBraced() {
return braced;
}
private boolean preparseArgs = true;
public boolean forceHold = false;
public void setParseArgs(boolean parse) {
preparseArgs = parse;
}
public boolean shouldPreParse() {
return preparseArgs;
}
public AbstractCommand activate() {
return this;
}
public AbstractCommand as(String commandName) {
// Register command with Registry with a Name
name = commandName.toUpperCase();
DenizenCore.getCommandRegistry().register(this.name, this);
onEnable();
return this;
}
protected String name;
public CommandOptions commandOptions;
public String getName() {
return name;
}
/**
* Returns the {@link CommandOptions} specified at startup.
*
* @return commandOptions
*/
public CommandOptions getOptions() {
return commandOptions;
}
/**
* Returns syntax specified in the {@link CommandOptions}, if specified.
*
* @return syntax if specified, otherwise "No usage defined! See documentation for more information!"
*/
public String getUsageHint() {
return !commandOptions.syntax.equals("") ? commandOptions.syntax : "No usage defined! See documentation for more information!";
}
/**
* Part of the Plugin disable sequence.
* <p/>
* Can be '@Override'n by a Command which requires a method when bukkit sends a
* onDisable() to Denizen. (ie. Server shuts down or restarts)
*/
public void onDisable() {
}
/**
* Part of the Plugin enable sequence. This is called when the command is
* instanced by the CommandRegistry, which is generally on a server startup.
* <p/>
* Can be '@Override'n by a Command which requires a method when starting, such
* as registering as a Bukkit Listener.
*/
public void onEnable() {
}
/**
* Creates a new {@link CommandOptions} for this command.
*
* @param usageHint A String representation of the suggested usage format of this command.
* Typically []'s represent required arguments and ()'s represent optional arguments.
* Example from SWITCH command: [LOCATION:x,y,z,world] (STATE:ON|OFF|TOGGLE) (DURATION:#)
* @param numberOfRequiredArgs The minimum number of required arguments needed to ensure proper functionality. The
* Executer will not parseArgs() for this command if this number is not met.
* @return The newly created CommandOptions object for the possibility of setting other
* criteria, though currently none exists.
*/
public CommandOptions withOptions(String usageHint, int numberOfRequiredArgs) {
this.commandOptions = new CommandOptions(usageHint, numberOfRequiredArgs);
return commandOptions;
}
public abstract void execute(ScriptEntry scriptEntry);
/**
* Called by the CommandExecuter before the execute() method is called. Arguments
* should be iterated through and checked before continuing to execute(). Note that
* PLAYER:<player> and NPC:<npc> arguments are parsed automatically by the Executer
* and should not be handled by this Command otherwise. Their output is stored in the
* attached {@link ScriptEntry} and can be retrieved with ((BukkitScriptEntryData)scriptEntry.entryData).getPlayer(),
* scriptEntry.getOfflinePlayer() (if the player specified is not online), and
* ((BukkitScriptEntryData)scriptEntry.entryData).getNPC(). Remember that any of these have a possibility of being null
* and should be handled accordingly if required by this Command.
*
* @param scriptEntry The {@link ScriptEntry}, which contains run-time context that may
* be utilized by this Command.
* @throws InvalidArgumentsException Will halt execution of this Command and hint usage to the console to avoid
* unwanted behavior due to missing information.
*/
public abstract void parseArgs(ScriptEntry scriptEntry) throws InvalidArgumentsException;
}