* @date 2017-01-03 * @license LGPLv3 * @url * * PdfParser is a pdf library written in PHP, extraction oriented. * Copyright (C) 2017 - Sébastien MALOT * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. * If not, see . * */ namespace Smalot\PdfParser\Element; use Smalot\PdfParser\Element; use Smalot\PdfParser\Document; /** * Class ElementXRef * * @package Smalot\PdfParser\Element */ class ElementXRef extends Element { /** * @return string */ public function getId() { return $this->getContent(); } /** * @return mixed */ public function getObject() { return $this->document->getObjectById($this->getId()); } /** * @param mixed $value * * @return bool */ public function equals($value) { $id = ($value instanceof ElementXRef) ? $value->getId() : $value; return $this->getId() == $id; } /** * @return string */ public function __toString() { return '#Obj#' . $this->getId(); } /** * @param string $content * @param Document $document * @param int $offset * * @return bool|ElementXRef */ public static function parse($content, Document $document = null, &$offset = 0) { if (preg_match('/^\s*(?P[0-9]+\s+[0-9]+\s+R)/s', $content, $match)) { $id = $match['id']; $offset += strpos($content, $id) + strlen($id); $id = str_replace(' ', '_', rtrim($id, ' R')); return new self($id, $document); } return false; } }