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<?php /** * @file * This file is part of the PdfParser library. * * @author Sébastien MALOT <sebastien@malot.fr> * * @date 2017-01-03 * * @license LGPLv3 * * @url <https://github.com/smalot/pdfparser> * * PdfParser is a pdf library written in PHP, extraction oriented. * Copyright (C) 2017 - Sébastien MALOT <sebastien@malot.fr> * * 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 <http://www.pdfparser.org/sites/default/LICENSE.txt>. */ namespace Smalot\PdfParser\Element; use Smalot\PdfParser\Document; use Smalot\PdfParser\Element; use Smalot\PdfParser\Font; /** * Class ElementString */ class ElementString extends Element { public function __construct($value) { parent::__construct($value, null); } public function equals($value): bool { return $value == $this->value; } /** * @return bool|ElementString */ public static function parse(string $content, ?Document $document = null, int &$offset = 0) { if (preg_match('/^\s*\((?P<name>.*)/s', $content, $match)) { $name = $match['name']; // Find next ')' not escaped. $cur_start_text = $start_search_end = 0; while (false !== ($cur_start_pos = strpos($name, ')', $start_search_end))) { $cur_extract = substr($name, $cur_start_text, $cur_start_pos - $cur_start_text); preg_match('/(?P<escape>[\\\]*)$/s', $cur_extract, $match); if (!(\strlen($match['escape']) % 2)) { break; } $start_search_end = $cur_start_pos + 1; } // Extract string. $name = substr($name, 0, (int) $cur_start_pos); $offset += strpos($content, '(') + $cur_start_pos + 2; // 2 for '(' and ')' $name = str_replace( ['\\\\', '\\ ', '\\/', '\(', '\)', '\n', '\r', '\t'], ['\\', ' ', '/', '(', ')', "\n", "\r", "\t"], $name ); // Decode string. $name = Font::decodeOctal($name); $name = Font::decodeEntities($name); $name = Font::decodeHexadecimal($name, false); $name = Font::decodeUnicode($name); return new self($name); } return false; } }
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