WritableBookPage.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\item;
 
use pocketmine\utils\Limits;
use pocketmine\utils\Utils;
use function sprintf;
use function strlen;
 
class WritableBookPage{
    public const PAGE_LENGTH_HARD_LIMIT_BYTES = Limits::INT16_MAX;
    public const PHOTO_NAME_LENGTH_HARD_LIMIT_BYTES = Limits::INT16_MAX;
 
    private string $text;
    private string $photoName;
 
    private static function checkLength(string $string, string $name, int $maxLength) : void{
        if(strlen($string) > $maxLength){
            throw new \InvalidArgumentException(sprintf("$name must be at most %d bytes, but have %d bytes", $maxLength, strlen($string)));
        }
    }
 
    public function __construct(string $text, string $photoName = ""){
        self::checkLength($text, "Text", self::PAGE_LENGTH_HARD_LIMIT_BYTES);
        self::checkLength($photoName, "Photo name", self::PHOTO_NAME_LENGTH_HARD_LIMIT_BYTES);
        Utils::checkUTF8($text);
        $this->text = $text;
        $this->photoName = $photoName;
    }
 
    public function getText() : string{
        return $this->text;
    }
 
    public function getPhotoName() : string{
        return $this->photoName;
    }
}