630 lines
22 KiB
Java
630 lines
22 KiB
Java
package com.nemez.cmdmgr;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileReader;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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import java.util.ArrayList;
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import java.util.logging.Level;
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import org.bukkit.plugin.java.JavaPlugin;
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import com.nemez.cmdmgr.component.ArgumentComponent;
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import com.nemez.cmdmgr.component.BooleanComponent;
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import com.nemez.cmdmgr.component.ByteComponent;
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import com.nemez.cmdmgr.component.ChainComponent;
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import com.nemez.cmdmgr.component.ConstantComponent;
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import com.nemez.cmdmgr.component.DoubleComponent;
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import com.nemez.cmdmgr.component.EmptyComponent;
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import com.nemez.cmdmgr.component.FloatComponent;
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import com.nemez.cmdmgr.component.ICommandComponent;
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import com.nemez.cmdmgr.component.IntegerComponent;
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import com.nemez.cmdmgr.component.LongComponent;
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import com.nemez.cmdmgr.component.OptionalComponent;
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import com.nemez.cmdmgr.component.ShortComponent;
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import com.nemez.cmdmgr.component.StringComponent;
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import com.nemez.cmdmgr.util.BranchStack;
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import com.nemez.cmdmgr.util.Executable;
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import com.nemez.cmdmgr.util.HelpPageCommand;
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import com.nemez.cmdmgr.util.Property;
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import com.nemez.cmdmgr.util.Type;
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/**
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* Example command.cmd
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*
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* command home:
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* set [string:name]:
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* run home_set name
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* help Set a new home
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* perm home.set
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* del [string:name]:
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* run home_del name
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* help Delete home\n&CCannot be undone!
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* perm home.del
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* list:
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* run home_list
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* help Show all homes
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* perm home.list
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* [string:name]:
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* run home_tp name
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* help Teleport to specified home
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* perm home.tp
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*
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* Generated in-game command structure:
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* (will only show commands the user has permission to execute)
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*
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* /home set <name>
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* /home del <name>
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* /home list
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* /home <name>
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* /home help
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*
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* Java code:
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*
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* @Command(hook="home_set")
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* public void executeHomeSet(String name) {
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* ...
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* }
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*
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* @Command(hook="home_del")
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* public void executeHomeDelete(String name) {
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* ...
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* }
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*
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* @Command(hook="home_list")
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* public void executeHomeList() {
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* ...
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* }
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*
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* @Command(hook="home_tp")
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* public void executeHomeTeleport(String name) {
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* ...
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* }
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*/
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public class CommandManager {
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/* Debugging toggle to generate help pages with types, e.g: str, i8, i32, fp64, etc. */
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public static boolean debugHelpMenu = false;
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/* Internal boolean to keep track of errors during resolving */
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public static boolean errors = false;
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/* Switches for color and formatting in the built-in help message and pagination text */
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public static String helpDescriptionFormatting = "&b";
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public static String helpUsageFormatting = "&6";
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public static String helpPageHeaderFormatting = "&a";
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public static String helpInvalidPageFormatting = "&c";
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public static String noPermissionFormatting = "&c";
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public static String notAllowedFormatting = "&c";
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/**
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* Registers a command from a String of source code
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*
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* @param cmdSourceCode source code
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* @param commandHandler instance of a class where your java functions are located
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* @param plugin your plugin class
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* @return success - if command was processed and registered successfully
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*/
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public static boolean registerCommand(String cmdSourceCode, Object commandHandler, JavaPlugin plugin) {
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if (cmdSourceCode == null || commandHandler == null || plugin == null) {
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return false;
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}
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/* get the class definition of the 'commandHandler' and get its functions */
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Method[] methods = commandHandler.getClass().getMethods();
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ArrayList<Method> finalMethods = new ArrayList<Method>();
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/* extract all the functions annotated with @Command that are not static */
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for (Method m : methods) {
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if (m.getAnnotationsByType(Command.class).length > 0 && (m.getModifiers() & Modifier.STATIC) == 0) {
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finalMethods.add(m);
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}
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}
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return parse(cmdSourceCode, finalMethods, plugin, commandHandler);
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}
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/**
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* Registers a command from a source File
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*
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* @param sourceFile file containing source code
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* @param commandHandler instance of a class where your java functions are located
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* @param plugin your plugin class
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* @return success - if command was processed and registered successfully
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*/
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public static boolean registerCommand(File sourceFile, Object commandHandler, JavaPlugin plugin) {
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StringBuilder src = new StringBuilder();
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String buf = "";
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try {
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BufferedReader reader = new BufferedReader(new FileReader(sourceFile));
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while ((buf = reader.readLine()) != null) {
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src.append(buf);
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}
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reader.close();
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} catch (Exception e) {
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plugin.getLogger().log(Level.WARNING, "Error while loading command file. (" + sourceFile.getAbsolutePath() + ")");
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plugin.getLogger().log(Level.WARNING, e.getCause().toString());
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errors = true;
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return false;
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}
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return registerCommand(src.toString(), commandHandler, plugin);
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}
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/**
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* Registers a command from an InputStream
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*
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* @param sourceStream input stream containing source code
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* @param commandHandler instance of a class where your java functions are located
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* @param plugin your plugin class
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* @return success - if command was processed and registered successfully
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*/
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public static boolean registerCommand(InputStream sourceStream, Object commandHandler, JavaPlugin plugin) {
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StringBuilder src = new StringBuilder();
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String buf = "";
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try {
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BufferedReader reader = new BufferedReader(new InputStreamReader(sourceStream));
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while ((buf = reader.readLine()) != null) {
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src.append(buf);
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}
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reader.close();
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} catch (Exception e) {
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plugin.getLogger().log(Level.WARNING, "Error while loading command file. (" + sourceStream.toString() + ")");
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plugin.getLogger().log(Level.WARNING, e.getCause().toString());
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errors = true;
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return false;
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}
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return registerCommand(src.toString(), commandHandler, plugin);
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}
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/**
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* Parses the source code into an abstract command syntax
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*
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* @param source String containing command source code
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* @param methods ArrayList of methods gathered from the plugin's handler class
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* @param plugin plugin to register commands as
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* @param methodContainer class containing method handles
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* @return success - if command parsing and registration was successful
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*/
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private static boolean parse(String source, ArrayList<Method> methods, JavaPlugin plugin, Object methodContainer) {
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/* source code */
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char[] chars = source.toCharArray();
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/* temporary buffer */
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StringBuilder buffer = new StringBuilder();
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/* name of the command we are parsing */
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String cmdName = null;
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/* if we are currently gathering chars from a type definition */
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boolean insideType = false;
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/* if we are currently gathering chars from the command name */
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boolean gettingName = false;
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/* the previous char, used for backslash escaping */
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char previous = '\0';
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/* the current 'array' of sub-commands we are parsing */
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ChainComponent currentChain = new ChainComponent();
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/* storage for the current sub-command if it branches into more sub-commands */
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BranchStack stack = new BranchStack();
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/* the current argument we are parsing */
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ArgumentComponent currentArgComp = null;
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/* the current property of the sub-command we are getting */
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Property currentProp = Property.NONE;
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/* a counter for how deep in the stack we are, used to figure out if we exited a sub-command or the master command */
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int bracketCounter = 0;
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/* line counter */
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int line = 0;
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// buffer for '...' and '"' properties of string types
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StringBuilder sideBuffer = new StringBuilder();
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/* iterate over all characters */
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for (int i = 0; i < chars.length; i++) {
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/* get current char */
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char current = chars[i];
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/* increment line counter */
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if (current == '\n') {
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line++;
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}
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/* current is a colon, we just switched from arguments 'type' to its 'name' */
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/* <type:name> */
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/* ^ */
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if (current == ':') {
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/* are we inside a type? */
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if (insideType) {
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/* are we already defining an argument? */
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if (currentArgComp != null) {
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/* yes, we are, throw an error */
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plugin.getLogger().log(Level.WARNING, "Syntax error at line " + line + ": Already defining a type.");
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errors = true;
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return false;
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}else{
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/* okay, resolve what type this is */
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currentArgComp = resolveComponentType(buffer.toString());
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buffer = new StringBuilder();
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/* type didn't fit any definition, throw an error */
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if (currentArgComp == null) {
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plugin.getLogger().log(Level.WARNING, "Type error at line " + line + ": Invalid type.");
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errors = true;
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return false;
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}
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}
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}else{
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/* not inside a type, probably just a string in the help property */
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buffer.append(':');
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}
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/* current is a semicolon, we just finished a property line */
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/* help this is an example; */
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/* ^ */
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}else if (current == ';') {
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/* semicolon is bashslash escaped, treat it as a normal character */
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if (previous == '\\') {
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buffer.append(';');
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}else{
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/* there is nothing on the stack, we are defining properties of 'nothing', throw an error */
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if (stack.get() == null) {
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plugin.getLogger().log(Level.WARNING, "Syntax error at line " + line + ": Not in code section.");
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errors = true;
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return false;
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}
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/* we are defining the 'help' property, set it to what we just gathered */
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if (currentProp == Property.HELP) {
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stack.get().help = buffer.toString();
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/* same as above, except its the function to run */
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}else if (currentProp == Property.EXECUTE) {
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stack.get().execute = buffer.toString();
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/* same again, but with the permission, and as that should not contain spaces, trim it */
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}else if (currentProp == Property.PERMISSION) {
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stack.get().permission = buffer.toString().trim();
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/* execution type, check if its a valid one and set it */
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}else if (currentProp == Property.TYPE) {
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stack.get().type = resolveExecutionType(buffer.toString().trim());
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/* not a valid type, throw an error */
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if (stack.get().type == null) {
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plugin.getLogger().log(Level.WARNING, "Attribute error at line " + line + ": Invalid attribute value. (" + buffer.toString().trim() + ").");
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errors = true;
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return false;
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}
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/* currently not defining anything, throw an error */
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}else{
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plugin.getLogger().log(Level.WARNING, "Attribute error at line " + line + ": Invalid attribute type.");
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errors = true;
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return false;
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}
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/* reset buffer and current property */
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currentProp = Property.NONE;
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buffer = new StringBuilder();
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}
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/* current is an opening curly bracket, we just entered a sub-command property definition */
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}else if (current == '{') {
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/* increment bracket counter */
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bracketCounter++;
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/* are we getting the name of the command? */
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if (gettingName && cmdName == null) {
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/* set the command name to what we just gathered (trimmed) */
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cmdName = buffer.toString().trim();
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}else{
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/* are we currently in an argument? */
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if (currentArgComp == null) {
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/* no, but if there is something that looks like text, put it into the current subcommand as a constant */
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if (buffer.toString().trim().length() > 0) {
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currentChain.append(new ConstantComponent(buffer.toString().trim()));
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}
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}else{
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/* yes, put it into the current subcommand */
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/* could happen when there are no 'spaces' */
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/* [str:example]{ */
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/* ^ */
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currentChain.append(currentArgComp);
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currentArgComp = null;
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}
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}
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/* reset buffer */
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buffer = new StringBuilder();
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/* get whatever is at the top of the stack */
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ChainComponent top = stack.get();
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if (top != null) {
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/* if it's not null, add our sub-command we just finished to it */
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top.append(currentChain);
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}
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/* push the current sub-command onto the stack */
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stack.push(currentChain);
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/* reset our current sub-command */
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currentChain = new ChainComponent();
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/* current is a closing curly bracket, we just finished a property section */
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}else if (current == '}') {
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/* decrement the bracket counter */
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bracketCounter--;
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/* pop whatever was on the stack */
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ChainComponent popped = stack.pop();
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/* if it's null, throw an error */
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if (popped == null) {
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plugin.getLogger().log(Level.WARNING, "Syntax error at line " + line + ": Too many closing brackets.");
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errors = true;
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return false;
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}
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/* go through all it's sub-commands and set their properties accordingly */
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/* 'type' and 'permission' are inherited to sub-commands this way */
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for (ICommandComponent comp : popped.getComponents()) {
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if (comp instanceof ChainComponent) {
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if (((ChainComponent) comp).type == null) {
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((ChainComponent) comp).type = popped.type;
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}
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if (((ChainComponent) comp).permission == null) {
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((ChainComponent) comp).permission = popped.permission;
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}
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}
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}
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/* we just exited the main command, do more magic */
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if (bracketCounter == 0) {
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postProcess(cmdName, popped, methods, plugin, methodContainer); // \o/
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/* reset everything in case the user defined another command after this one */
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buffer = new StringBuilder();
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cmdName = null;
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insideType = false;
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gettingName = false;
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previous = '\0';
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currentChain = new ChainComponent();
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stack = new BranchStack();
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currentArgComp = null;
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currentProp = Property.NONE;
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continue;
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}
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currentChain = new ChainComponent();
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/* current is a space, we just finished defining which property we are about to set */
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}else if (current == ' ') {
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/* we are already defining a property, append it as text */
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if (currentProp != Property.NONE) {
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buffer.append(' ');
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}else{
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/* we got the 'command' definition, the name of the command will follow */
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if (buffer.toString().equals("command") && !gettingName && cmdName == null) {
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gettingName = true;
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/* we got other properties, their values will follow */
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}else if (buffer.toString().equals("help")) {
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currentProp = Property.HELP;
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}else if (buffer.toString().equals("run")) {
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currentProp = Property.EXECUTE;
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}else if (buffer.toString().equals("perm")) {
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currentProp = Property.PERMISSION;
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}else if (buffer.toString().equals("type")) {
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currentProp = Property.TYPE;
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/* we didn't get any of those, we are probably in the middle of a sub-command definition */
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/* example [int:value] { */
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/* ^ ^ */
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}else{
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/* we are getting the name and we didn't set it yet, set it */
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if (gettingName && cmdName == null) {
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cmdName = buffer.toString().trim();
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}else{
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/* we aren't defining a type, put the current text into the sub-command as a constant */
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if (currentArgComp == null) {
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if (buffer.toString().trim().length() > 0) {
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currentChain.append(new ConstantComponent(buffer.toString().trim()));
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}
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/* we are defining a command, put it into the sub-command */
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}else{
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currentChain.append(currentArgComp);
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currentArgComp = null;
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}
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}
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}
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/* reset the buffer */
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buffer = new StringBuilder();
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}
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/* current is an opening square bracket, we just started a type definition */
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}else if (current == '[') {
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/* we are defining a property, treat it as text */
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if (currentProp != Property.NONE) {
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buffer.append('[');
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/* we are already inside of a type definition, throw an error */
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}else if (insideType) {
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plugin.getLogger().log(Level.WARNING, "Syntax error at line " + line + ": Invalid type declaration.");
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errors = true;
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return false;
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}else{
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/* we just entered a type definition */
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insideType = true;
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}
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/* current is a closing square bracket, we just finished a type definition */
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}else if (current == ']') {
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/* we are defining a property, treat it as text */
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if (currentProp != Property.NONE) {
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buffer.append(']');
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/* we are inside of a type */
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}else if (insideType) {
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insideType = false;
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/* current argument type is null, throw an error */
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if (currentArgComp == null) {
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currentArgComp = resolveComponentType(buffer.toString());
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buffer = new StringBuilder();
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if (currentArgComp instanceof EmptyComponent) {
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}else{
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/* should never happen */
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plugin.getLogger().log(Level.WARNING, "Type error at line " + line + ": Type has no type?");
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errors = true;
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return false;
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}
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}else{
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/* set the value of the current type and reset the buffer */
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currentArgComp.argName = buffer.toString();
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buffer = new StringBuilder();
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if (currentArgComp instanceof StringComponent) {
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StringComponent strComp = (StringComponent) currentArgComp;
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strComp.infinite = sideBuffer.toString().contains("...");
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}
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sideBuffer = new StringBuilder();
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}
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}else{
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/* we are not defining a type, throw an error */
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plugin.getLogger().log(Level.WARNING, "Syntax error at line " + line + ": Not in type declaration.");
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errors = true;
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return false;
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}
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/* typical escape sequences and such */
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}else if (current == 'n' && currentProp == Property.HELP) {
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if (previous == '\\') {
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buffer.append('\n');
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}else{
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buffer.append('n');
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}
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}else if (current == 't' && currentProp == Property.HELP) {
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if (previous == '\\') {
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buffer.append('\t');
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}else{
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buffer.append('t');
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}
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}else if (current == '\\' && currentProp == Property.HELP) {
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if (previous == '\\') {
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buffer.append('\\');
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}
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}else if (current != '\r' && current != '\n' && current != '\t') {
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if (currentArgComp != null && current == '.') {
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if (currentArgComp instanceof StringComponent) {
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sideBuffer.append(current);
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}else{
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plugin.getLogger().log(Level.WARNING, "Syntax error at line " + line + ": '...' is invalid for non-string types.");
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errors = true;
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return false;
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}
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}else{
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buffer.append(current);
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}
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}
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previous = current;
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}
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return true;
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}
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/**
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* Resolves the string into a type, or null if invalid
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*
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* @param type string you want to evaluate
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* @return the type class or null if invalid
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*/
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private static ArgumentComponent resolveComponentType(String type) {
|
|
switch (type) {
|
|
case "string":
|
|
return new StringComponent();
|
|
case "int":
|
|
case "integer":
|
|
return new IntegerComponent();
|
|
case "short":
|
|
return new ShortComponent();
|
|
case "long":
|
|
return new LongComponent();
|
|
case "byte":
|
|
return new ByteComponent();
|
|
case "float":
|
|
return new FloatComponent();
|
|
case "double":
|
|
return new DoubleComponent();
|
|
case "bool":
|
|
case "boolean":
|
|
return new BooleanComponent();
|
|
case "optional":
|
|
case "opt":
|
|
case "flag":
|
|
return new OptionalComponent();
|
|
case "empty":
|
|
case "null":
|
|
return new EmptyComponent();
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Resolves the string into a property, or null if invalid
|
|
*
|
|
* @param type string you want to evaluate
|
|
* @return the property enum or null if invalid
|
|
*/
|
|
private static Type resolveExecutionType(String type) {
|
|
switch (type) {
|
|
case "player":
|
|
return Type.PLAYER;
|
|
case "both":
|
|
case "any":
|
|
case "all":
|
|
return Type.BOTH;
|
|
case "server":
|
|
case "console":
|
|
return Type.CONSOLE;
|
|
case "none":
|
|
case "nobody":
|
|
return Type.NOBODY;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
private static void postProcess(String cmdName, ChainComponent components, ArrayList<Method> methods, JavaPlugin plugin, Object methodContainer) {
|
|
components.execute = null;
|
|
components.help = null;
|
|
components.permission = null;
|
|
components.type = null;
|
|
Executable cmd = new Executable(cmdName, constructHelpPages(cmdName, components));
|
|
cmd.register(methods, plugin, methodContainer);
|
|
}
|
|
|
|
private static ArrayList<HelpPageCommand[]> constructHelpPages(String cmdName, ChainComponent root) {
|
|
String[] rawLines = constructHelpPagesRecursive(root).split("\r");
|
|
ArrayList<HelpPageCommand[]> pages = new ArrayList<HelpPageCommand[]>();
|
|
ArrayList<String> lines = new ArrayList<String>();
|
|
HelpPageCommand[] page = new HelpPageCommand[5];
|
|
|
|
for (int i = 0; i < rawLines.length; i++) {
|
|
if (rawLines[i].length() > 0 && !rawLines[i].equals("\0null\0null\0null\0null\0")) {
|
|
lines.add(rawLines[i]);
|
|
}
|
|
}
|
|
|
|
boolean firstPass = true;
|
|
int i;
|
|
for (i = 0; i < lines.size(); i++) {
|
|
if (i % 5 == 0 && !firstPass) {
|
|
pages.add(page);
|
|
page = new HelpPageCommand[5];
|
|
}
|
|
String[] cmd = lines.get(i).split("\0");
|
|
page[i % 5] = new HelpPageCommand(cmd[1], "/" + cmdName + " " + cmd[0], cmd[3], cmd[2], Type.parse(cmd[4]));
|
|
firstPass = false;
|
|
}
|
|
if (i % 5 == 0) {
|
|
pages.add(page);
|
|
page = new HelpPageCommand[5];
|
|
}
|
|
page[i % 5] = new HelpPageCommand(cmdName + ".help", "/" + cmdName + " help <page:i32>", "Shows help.", null, Type.BOTH);
|
|
pages.add(page);
|
|
|
|
return pages;
|
|
}
|
|
|
|
private static String constructHelpPagesRecursive(ICommandComponent component) {
|
|
String data = "";
|
|
|
|
if (component instanceof ChainComponent) {
|
|
ChainComponent comp = (ChainComponent) component;
|
|
ArrayList<String> leaves = new ArrayList<String>();
|
|
String chain = "";
|
|
data += "\r";
|
|
for (ICommandComponent c : comp.getComponents()) {
|
|
String temp = constructHelpPagesRecursive(c);
|
|
if (c instanceof ChainComponent) {
|
|
temp = temp.replaceAll("\r", "\r" + chain);
|
|
leaves.add(temp);
|
|
}else{
|
|
chain += temp;
|
|
}
|
|
}
|
|
data += chain + "\0" + ((comp.permission == null || comp.permission.equals("-none-")) ? null : comp.permission) + "\0" + comp.execute + "\0" + comp.help + "\0" + Type.get(comp.type) + "\0";
|
|
for (String s : leaves) {
|
|
data += s;
|
|
}
|
|
}else{
|
|
data += component.getComponentInfo() + " ";
|
|
}
|
|
|
|
return data;
|
|
}
|
|
}
|