Added integrated command aliases

src/pocketmine/command/FormattedCommandAlias.php

@@ -0,0 +1,155 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+namespace pocketmine\command;
+
+use pocketmine\Server;
+use pocketmine\utils\TextFormat;
+
+class FormattedCommandAlias extends Command{
+	private $formatStrings = [];
+
+	/**
+	 * @param string   $alias
+	 * @param string[] $formatStrings
+	 */
+	public function __construct($alias, array $formatStrings){
+		parent::__construct($alias);
+		$this->formatStrings = $formatStrings;
+	}
+
+	public function execute(CommandSender $sender, $commandLabel, array $args){
+
+		$commands = [];
+		$result = false;
+
+		foreach($this->formatStrings as $formatString){
+			try{
+				$commands[] = $this->buildCommand($formatString, $args);
+			}catch(\Exception $e){
+				if($e instanceof \InvalidArgumentException){
+					$sender->sendMessage(TextFormat::RED . $e->getMessage());
+				}else{
+					$sender->sendMessage(TextFormat::RED . "An internal error occurred while attempting to perform this command");
+				}
+				return false;
+			}
+		}
+
+		foreach($commands as $command){
+			$result |= Server::getInstance()->dispatchCommand($sender, $command);
+		}
+
+		return (bool) $result;
+	}
+
+	/**
+	 * @param string $formatString
+	 * @param array  $args
+	 *
+	 * @return string
+	 * @throws \InvalidArgumentException
+	 */
+	private function buildCommand($formatString, array $args){
+		$index = strpos($formatString, '$');
+		while($index !== false){
+			$start = $index;
+			if($index > 0 and $formatString{$start - 1} === "\\"){
+				$formatString = substr($formatString, 0, $start - 1) . substr($formatString, $start);
+				$index = strpos($formatString, '$', $index);
+				continue;
+			}
+
+			$required = false;
+			if($formatString{$index + 1} == '$'){
+				$required = true;
+
+				++$index;
+			}
+
+			++$index;
+
+			$argStart = $index;
+
+			while($index < strlen($formatString) and self::inRange($formatString{$index} - 48, 0, 9)){
+				++$index;
+			}
+
+			if($argStart === $index){
+				throw new \InvalidArgumentException("Invalid replacement token");
+			}
+
+			$position = intval(substr($formatString, $argStart, $index));
+
+			if($position === 0){
+				throw new \InvalidArgumentException("Invalid replacement token");
+			}
+
+			--$position;
+
+			$rest = false;
+
+			if($index < strlen($formatString) and $formatString{$index} === "-"){
+				$rest = true;
+				++$index;
+			}
+
+			$end = $index;
+
+			if($required and $position >= count($args)){
+				throw new \InvalidArgumentException("Missing required argument " . ($position + 1));
+			}
+
+			$replacement = "";
+			if($rest and $position < count($args)){
+				for($i = $position; $i < count($args); ++$i){
+					if($i !== $position){
+						$replacement .= " ";
+					}
+
+					$replacement .= $args[$i];
+				}
+			}elseif($position < count($args)){
+				$replacement .= $args[$position];
+			}
+
+			$formatString = substr($formatString, 0, $start) . $replacement . substr($formatString, $end);
+
+			$index = $start + strlen($replacement);
+
+			$index = strpos($formatString, '$', $index);
+		}
+
+		return $formatString;
+	}
+
+	/**
+	 * @param int $i
+	 * @param int $j
+	 * @param int $k
+	 *
+	 * @return bool
+	 */
+	private static function inRange($i, $j, $k){
+		return $i >= $j and $i <= $k;
+	}
+
+}