60 lines
1.6 KiB
PHP

<?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/
*
*
*/
declare(strict_types=1);
namespace pocketmine\network\mcpe\compression;
use function zlib_decode;
use function zlib_encode;
use const ZLIB_ENCODING_DEFLATE;
final class Zlib{
/** @var int */
public static $LEVEL = 7;
/** @var int */
public static $THRESHOLD = 256;
private function __construct(){
}
/**
* @param int $maxDecodedLength default 2MB
*
* @throws DecompressionException
*/
public static function decompress(string $payload, int $maxDecodedLength = 1024 * 1024 * 2) : string{
$result = @zlib_decode($payload, $maxDecodedLength);
if($result === false){
throw new DecompressionException("Failed to decompress data");
}
return $result;
}
/**
* @param int $compressionLevel
*/
public static function compress(string $payload, ?int $compressionLevel = null) : string{
return zlib_encode($payload, ZLIB_ENCODING_DEFLATE, $compressionLevel ?? self::$LEVEL);
}
}