Proyectos de Subversion Moodle

Rev

| Ultima modificación | Ver Log |

Rev Autor Línea Nro. Línea
1 efrain 1 
<?php
2 
 
3 
/**
4 
 * This file is part of FPDI
5 
 *
6 
 * @package   setasign\Fpdi
7 
 * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
8 
 * @license   http://opensource.org/licenses/mit-license The MIT License
9 
 */
10 
 
11 
namespace setasign\Fpdi\PdfParser\Filter;
12 
 
13 
/**
14 
 * Class for handling ASCII hexadecimal encoded data
15 
 */
16 
class AsciiHex implements FilterInterface
17 
{
18 
    /**
19 
     * Converts an ASCII hexadecimal encoded string into its binary representation.
20 
     *
21 
     * @param string $data The input string
22 
     * @return string
23 
     */
24 
    public function decode($data)
25 
    {
26 
        $data = \preg_replace('/[^0-9A-Fa-f]/', '', \rtrim($data, '>'));
27 
        if ((\strlen($data) % 2) === 1) {
28 
            $data .= '0';
29 
        }
30 
 
31 
        return \pack('H*', $data);
32 
    }
33 
 
34 
    /**
35 
     * Converts a string into ASCII hexadecimal representation.
36 
     *
37 
     * @param string $data The input string
38 
     * @param boolean $leaveEOD
39 
     * @return string
40 
     */
41 
    public function encode($data, $leaveEOD = false)
42 
    {
43 
        $t = \unpack('H*', $data);
44 
        return \current($t)
45 
            . ($leaveEOD ? '' : '>');
46 
    }
47 
}