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<?php |
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|
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/** |
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* @file |
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* This file is part of the PdfParser library. |
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* |
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* @author Sébastien MALOT <sebastien@malot.fr> |
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* |
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* @date 2017-01-03 |
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* |
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* @license LGPLv3 |
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* |
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* @url <https://github.com/smalot/pdfparser> |
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* |
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* PdfParser is a pdf library written in PHP, extraction oriented. |
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* Copyright (C) 2017 - Sébastien MALOT <sebastien@malot.fr> |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. |
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* If not, see <http://www.pdfparser.org/sites/default/LICENSE.txt>. |
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*/ |
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|
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namespace Smalot\PdfParser\Element; |
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|
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use Smalot\PdfParser\Document; |
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use Smalot\PdfParser\Element; |
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use Smalot\PdfParser\Font; |
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|
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/** |
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* Class ElementString |
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*/ |
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class ElementString extends Element |
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{ |
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public function __construct($value) |
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{ |
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parent::__construct($value, null); |
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} |
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|
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public function equals($value): bool |
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{ |
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return $value == $this->value; |
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} |
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|
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/** |
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* @return bool|ElementString |
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*/ |
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public static function parse(string $content, ?Document $document = null, int &$offset = 0) |
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{ |
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if (preg_match('/^\s*\((?P<name>.*)/s', $content, $match)) { |
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$name = $match['name']; |
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|
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// Find next ')' not escaped. |
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$cur_start_text = $start_search_end = 0; |
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while (false !== ($cur_start_pos = strpos($name, ')', $start_search_end))) { |
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$cur_extract = substr($name, $cur_start_text, $cur_start_pos - $cur_start_text); |
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preg_match('/(?P<escape>[\\\]*)$/s', $cur_extract, $match); |
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if (!(\strlen($match['escape']) % 2)) { |
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break; |
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} |
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$start_search_end = $cur_start_pos + 1; |
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} |
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|
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// Extract string. |
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$name = substr($name, 0, (int) $cur_start_pos); |
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$offset += strpos($content, '(') + $cur_start_pos + 2; // 2 for '(' and ')' |
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$name = str_replace( |
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['\\\\', '\\ ', '\\/', '\(', '\)', '\n', '\r', '\t'], |
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['\\', ' ', '/', '(', ')', "\n", "\r", "\t"], |
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$name |
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); |
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|
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// Decode string. |
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$name = Font::decodeOctal($name); |
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$name = Font::decodeEntities($name); |
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$name = Font::decodeHexadecimal($name, false); |
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$name = Font::decodeUnicode($name); |
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|
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return new self($name); |
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} |
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|
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return false; |
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} |
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} |
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|
