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<?php |
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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 <[email protected]> |
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* @date 2017-01-03 |
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* |
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* @license LGPLv3 |
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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 <[email protected]> |
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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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namespace Smalot\PdfParser; |
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/** |
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* Class Font |
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*/ |
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class Font extends PDFObject |
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{ |
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const MISSING = '?'; |
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/** |
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* @var array |
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*/ |
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protected $table = null; |
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/** |
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* @var array |
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*/ |
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protected $tableSizes = null; |
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public function init() |
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{ |
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// Load translate table. |
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$this->loadTranslateTable(); |
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} |
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/** |
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* @return string |
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*/ |
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public function getName() |
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{ |
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return $this->has('BaseFont') ? (string) $this->get('BaseFont') : '[Unknown]'; |
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} |
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/** |
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* @return string |
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*/ |
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public function getType() |
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{ |
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return (string) $this->header->get('Subtype'); |
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} |
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/** |
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* @return array |
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*/ |
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public function getDetails($deep = true) |
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{ |
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$details = []; |
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$details['Name'] = $this->getName(); |
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$details['Type'] = $this->getType(); |
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$details['Encoding'] = ($this->has('Encoding') ? (string) $this->get('Encoding') : 'Ansi'); |
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$details += parent::getDetails($deep); |
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return $details; |
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} |
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/** |
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* @param string $char |
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* @param bool $use_default |
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* |
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* @return string|bool |
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*/ |
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public function translateChar($char, $use_default = true) |
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{ |
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$dec = hexdec(bin2hex($char)); |
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if (\array_key_exists($dec, $this->table)) { |
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return $this->table[$dec]; |
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} |
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return $use_default ? self::MISSING : $char; |
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} |
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/** |
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* @param int $code |
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* |
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* @return string |
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*/ |
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public static function uchr($code) |
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{ |
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return html_entity_decode('&#'.((int) $code).';', ENT_NOQUOTES, 'UTF-8'); |
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} |
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/** |
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* @return array |
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*/ |
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public function loadTranslateTable() |
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{ |
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if (null !== $this->table) { |
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return $this->table; |
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} |
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$this->table = []; |
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$this->tableSizes = [ |
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'from' => 1, |
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'to' => 1, |
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]; |
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if ($this->has('ToUnicode')) { |
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$content = $this->get('ToUnicode')->getContent(); |
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$matches = []; |
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// Support for multiple spacerange sections |
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if (preg_match_all('/begincodespacerange(?P<sections>.*?)endcodespacerange/s', $content, $matches)) { |
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foreach ($matches['sections'] as $section) { |
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$regexp = '/<(?P<from>[0-9A-F]+)> *<(?P<to>[0-9A-F]+)>[ \r\n]+/is'; |
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preg_match_all($regexp, $section, $matches); |
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$this->tableSizes = [ |
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'from' => max(1, \strlen(current($matches['from'])) / 2), |
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'to' => max(1, \strlen(current($matches['to'])) / 2), |
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]; |
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break; |
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} |
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} |
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// Support for multiple bfchar sections |
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if (preg_match_all('/beginbfchar(?P<sections>.*?)endbfchar/s', $content, $matches)) { |
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foreach ($matches['sections'] as $section) { |
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$regexp = '/<(?P<from>[0-9A-F]+)> +<(?P<to>[0-9A-F]+)>[ \r\n]+/is'; |
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preg_match_all($regexp, $section, $matches); |
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$this->tableSizes['from'] = max(1, \strlen(current($matches['from'])) / 2); |
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foreach ($matches['from'] as $key => $from) { |
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$parts = preg_split( |
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'/([0-9A-F]{4})/i', |
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$matches['to'][$key], |
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0, |
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PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE |
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); |
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$text = ''; |
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foreach ($parts as $part) { |
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$text .= self::uchr(hexdec($part)); |
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} |
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$this->table[hexdec($from)] = $text; |
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} |
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} |
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} |
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// Support for multiple bfrange sections |
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if (preg_match_all('/beginbfrange(?P<sections>.*?)endbfrange/s', $content, $matches)) { |
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foreach ($matches['sections'] as $section) { |
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// Support for : <srcCode1> <srcCode2> <dstString> |
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$regexp = '/<(?P<from>[0-9A-F]+)> *<(?P<to>[0-9A-F]+)> *<(?P<offset>[0-9A-F]+)>[ \r\n]+/is'; |
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preg_match_all($regexp, $section, $matches); |
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foreach ($matches['from'] as $key => $from) { |
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$char_from = hexdec($from); |
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$char_to = hexdec($matches['to'][$key]); |
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$offset = hexdec($matches['offset'][$key]); |
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for ($char = $char_from; $char <= $char_to; ++$char) { |
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$this->table[$char] = self::uchr($char - $char_from + $offset); |
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} |
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} |
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// Support for : <srcCode1> <srcCodeN> [<dstString1> <dstString2> ... <dstStringN>] |
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// Some PDF file has 2-byte Unicode values on new lines > added \r\n |
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$regexp = '/<(?P<from>[0-9A-F]+)> *<(?P<to>[0-9A-F]+)> *\[(?P<strings>[\r\n<>0-9A-F ]+)\][ \r\n]+/is'; |
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preg_match_all($regexp, $section, $matches); |
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foreach ($matches['from'] as $key => $from) { |
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$char_from = hexdec($from); |
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$strings = []; |
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preg_match_all('/<(?P<string>[0-9A-F]+)> */is', $matches['strings'][$key], $strings); |
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foreach ($strings['string'] as $position => $string) { |
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$parts = preg_split( |
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'/([0-9A-F]{4})/i', |
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$string, |
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0, |
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PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE |
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); |
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$text = ''; |
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foreach ($parts as $part) { |
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$text .= self::uchr(hexdec($part)); |
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} |
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$this->table[$char_from + $position] = $text; |
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} |
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} |
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} |
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} |
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} |
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return $this->table; |
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} |
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/** |
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* @param array $table |
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*/ |
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public function setTable($table) |
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{ |
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$this->table = $table; |
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} |
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/** |
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* @param string $hexa |
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* @param bool $add_braces |
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* |
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* @return string |
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*/ |
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public static function decodeHexadecimal($hexa, $add_braces = false) |
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{ |
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// Special shortcut for XML content. |
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if (false !== stripos($hexa, '<?xml')) { |
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return $hexa; |
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} |
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$text = ''; |
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$parts = preg_split('/(<[a-f0-9]+>)/si', $hexa, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE); |
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foreach ($parts as $part) { |
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if (preg_match('/^<.*>$/', $part) && false === stripos($part, '<?xml')) { |
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$part = trim($part, '<>'); |
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if ($add_braces) { |
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$text .= '('; |
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} |
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$part = pack('H*', $part); |
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$text .= ($add_braces ? preg_replace('/\\\/s', '\\\\\\', $part) : $part); |
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if ($add_braces) { |
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$text .= ')'; |
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} |
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} else { |
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$text .= $part; |
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} |
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} |
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return $text; |
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} |
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/** |
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* @param string $text |
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* |
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* @return string |
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*/ |
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public static function decodeOctal($text) |
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{ |
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$parts = preg_split('/(\\\\\d{3})/s', $text, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE); |
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$text = ''; |
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foreach ($parts as $part) { |
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if (preg_match('/^\\\\\d{3}$/', $part)) { |
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$text .= \chr(octdec(trim($part, '\\'))); |
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} else { |
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$text .= $part; |
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} |
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} |
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return $text; |
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} |
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292
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/** |
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* @param string $text |
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* |
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* @return string |
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*/ |
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297
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public static function decodeEntities($text) |
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298
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{ |
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$parts = preg_split('/(#\d{2})/s', $text, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE); |
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$text = ''; |
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302
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foreach ($parts as $part) { |
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if (preg_match('/^#\d{2}$/', $part)) { |
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$text .= \chr(hexdec(trim($part, '#'))); |
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} else { |
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$text .= $part; |
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} |
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} |
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return $text; |
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} |
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313
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/** |
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314
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* @param string $text |
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315
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* |
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316
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* @return string |
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317
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*/ |
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318
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public static function decodeUnicode($text) |
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319
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{ |
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320
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if (preg_match('/^\xFE\xFF/i', $text)) { |
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321
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// Strip U+FEFF byte order marker. |
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322
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$decode = substr($text, 2); |
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323
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$text = ''; |
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324
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|
$length = \strlen($decode); |
|
325
|
|
|
|
|
326
|
|
|
for ($i = 0; $i < $length; $i += 2) { |
|
327
|
|
|
$text .= self::uchr(hexdec(bin2hex(substr($decode, $i, 2)))); |
|
|
|
|
|
|
328
|
|
|
} |
|
329
|
|
|
} |
|
330
|
|
|
|
|
331
|
|
|
return $text; |
|
332
|
|
|
} |
|
333
|
|
|
|
|
334
|
|
|
/** |
|
335
|
|
|
* @return int |
|
336
|
|
|
*/ |
|
337
|
|
|
protected function getFontSpaceLimit() |
|
338
|
|
|
{ |
|
339
|
|
|
return -50; |
|
340
|
|
|
} |
|
341
|
|
|
|
|
342
|
|
|
/** |
|
343
|
|
|
* @param array $commands |
|
344
|
|
|
* |
|
345
|
|
|
* @return string |
|
346
|
|
|
*/ |
|
347
|
|
|
public function decodeText($commands) |
|
348
|
|
|
{ |
|
349
|
|
|
$text = ''; |
|
350
|
|
|
$word_position = 0; |
|
351
|
|
|
$words = array(); |
|
352
|
|
|
$font_space = $this->getFontSpaceLimit(); |
|
353
|
|
|
|
|
354
|
|
|
foreach ($commands as $command) { |
|
355
|
|
|
switch ($command[PDFObject::TYPE]) { |
|
356
|
|
|
case 'n': |
|
357
|
|
|
if ((float) (trim($command[PDFObject::COMMAND])) < $font_space) { |
|
358
|
|
|
$word_position = \count($words); |
|
359
|
|
|
} |
|
360
|
|
|
continue 2; |
|
361
|
|
|
|
|
362
|
|
|
case '<': |
|
363
|
|
|
// Decode hexadecimal. |
|
364
|
|
|
$text = self::decodeHexadecimal('<' . $command[PDFObject::COMMAND] . '>'); |
|
365
|
|
|
break; |
|
366
|
|
|
|
|
367
|
|
|
default: |
|
368
|
|
|
// Decode octal (if necessary). |
|
369
|
|
|
$text = self::decodeOctal($command[PDFObject::COMMAND]); |
|
370
|
|
|
} |
|
371
|
|
|
|
|
372
|
|
|
// replace escaped chars |
|
373
|
|
|
$text = stripcslashes($text); |
|
374
|
|
|
|
|
375
|
|
|
// add content to result string |
|
376
|
|
|
if (isset($words[$word_position])) { |
|
377
|
|
|
$words[$word_position] .= $text; |
|
378
|
|
|
} else { |
|
379
|
|
|
$words[$word_position] = $text; |
|
380
|
|
|
} |
|
381
|
|
|
} |
|
382
|
|
|
|
|
383
|
|
|
foreach ($words as &$word) { |
|
384
|
|
|
$word = $this->decodeContent($word); |
|
385
|
|
|
} |
|
386
|
|
|
|
|
387
|
|
|
return implode(' ', $words); |
|
388
|
|
|
} |
|
389
|
|
|
|
|
390
|
|
|
/** |
|
391
|
|
|
* @param string $text |
|
392
|
|
|
* @param bool $unicode |
|
393
|
|
|
* |
|
394
|
|
|
* @return string |
|
395
|
|
|
*/ |
|
396
|
|
|
public function decodeContent($text) |
|
397
|
|
|
{ |
|
398
|
|
|
if ($this->has('ToUnicode')) { |
|
399
|
|
|
$bytes = $this->tableSizes['from']; |
|
400
|
|
|
|
|
401
|
|
|
if ($bytes) { |
|
402
|
|
|
$result = ''; |
|
403
|
|
|
$length = \strlen($text); |
|
404
|
|
|
|
|
405
|
|
|
for ($i = 0; $i < $length; $i += $bytes) { |
|
406
|
|
|
$char = substr($text, $i, $bytes); |
|
407
|
|
|
|
|
408
|
|
|
if (false !== ($decoded = $this->translateChar($char, false))) { |
|
409
|
|
|
$char = $decoded; |
|
410
|
|
|
} elseif ($this->has('DescendantFonts')) { |
|
411
|
|
|
if ($this->get('DescendantFonts') instanceof PDFObject) { |
|
412
|
|
|
$fonts = $this->get('DescendantFonts')->getHeader()->getElements(); |
|
|
|
|
|
|
413
|
|
|
} else { |
|
414
|
|
|
$fonts = $this->get('DescendantFonts')->getContent(); |
|
415
|
|
|
} |
|
416
|
|
|
$decoded = false; |
|
417
|
|
|
|
|
418
|
|
|
foreach ($fonts as $font) { |
|
419
|
|
|
if ($font instanceof self) { |
|
420
|
|
|
if (false !== ($decoded = $font->translateChar($char, false))) { |
|
421
|
|
|
$decoded = mb_convert_encoding($decoded, 'UTF-8', 'Windows-1252'); |
|
|
|
|
|
|
422
|
|
|
break; |
|
423
|
|
|
} |
|
424
|
|
|
} |
|
425
|
|
|
} |
|
426
|
|
|
|
|
427
|
|
|
if (false !== $decoded) { |
|
428
|
|
|
$char = $decoded; |
|
429
|
|
|
} else { |
|
430
|
|
|
$char = mb_convert_encoding($char, 'UTF-8', 'Windows-1252'); |
|
431
|
|
|
} |
|
432
|
|
|
} else { |
|
433
|
|
|
$char = self::MISSING; |
|
434
|
|
|
} |
|
435
|
|
|
|
|
436
|
|
|
$result .= $char; |
|
437
|
|
|
} |
|
438
|
|
|
|
|
439
|
|
|
$text = $result; |
|
440
|
|
|
} |
|
441
|
|
|
} elseif ($this->has('Encoding') && $this->get('Encoding') instanceof Encoding) { |
|
|
|
|
|
|
442
|
|
|
/** @var Encoding $encoding */ |
|
443
|
|
|
$encoding = $this->get('Encoding'); |
|
444
|
|
|
$unicode = mb_check_encoding($text, "UTF-8"); |
|
445
|
|
|
$result = ''; |
|
446
|
|
|
if ($unicode) { |
|
447
|
|
|
$chars = preg_split( |
|
448
|
|
|
'//s' . ($unicode ? 'u' : ''), |
|
449
|
|
|
$text, |
|
450
|
|
|
-1, |
|
451
|
|
|
PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY |
|
452
|
|
|
); |
|
453
|
|
|
|
|
454
|
|
|
foreach ($chars as $char) { |
|
455
|
|
|
$dec_av = hexdec(bin2hex($char)); |
|
456
|
|
|
$dec_ap = $encoding->translateChar($dec_av); |
|
457
|
|
|
$result .= self::uchr($dec_ap); |
|
458
|
|
|
} |
|
459
|
|
|
} else { |
|
460
|
|
|
$length = strlen($text); |
|
461
|
|
|
|
|
462
|
|
|
for ($i = 0; $i < $length; $i++) { |
|
463
|
|
|
$dec_av = hexdec(bin2hex($text[$i])); |
|
464
|
|
|
$dec_ap = $encoding->translateChar($dec_av); |
|
465
|
|
|
$result .= self::uchr($dec_ap); |
|
466
|
|
|
} |
|
467
|
|
|
|
|
468
|
|
|
} |
|
469
|
|
|
$text = $result; |
|
470
|
|
|
} elseif ($this->get('Encoding') instanceof Element && |
|
471
|
|
|
$this->get('Encoding')->equals('MacRomanEncoding')) { |
|
472
|
|
|
$text = mb_convert_encoding($text, 'UTF-8', 'Mac'); |
|
473
|
|
|
} else { |
|
474
|
|
|
$text = mb_convert_encoding($text, 'UTF-8', 'Windows-1252'); |
|
475
|
|
|
} |
|
476
|
|
|
|
|
477
|
|
|
return $text; |
|
478
|
|
|
} |
|
479
|
|
|
} |
|
480
|
|
|
|
smalot /
pdfparser
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