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1<?php
2/**
3 * Pop PHP Framework (http://www.popphp.org/)
4 *
5 * @link       https://github.com/popphp/popphp-framework
6 * @author     Nick Sagona, III <dev@nolainteractive.com>
7 * @copyright  Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com)
8 * @license    http://www.popphp.org/license     New BSD License
9 */
10
11/**
12 * @namespace
13 */
14namespace Pop\Pdf\Build\Font\TrueType\Table\Cmap;
15
16/**
17 * CMAP trimmed-table class
18 *
19 * @category   Pop
20 * @package    Pop\Pdf
21 * @author     Nick Sagona, III <dev@nolainteractive.com>
22 * @copyright  Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com)
23 * @license    http://www.popphp.org/license     New BSD License
24 * @version    5.0.0
25 */
26class TrimmedTable
27{
28
29    /**
30     * Method to parse the Trimmed Table (Format 6) CMAP data
31     *
32     * @param  string $data
33     * @return array
34     */
35    public static function parseData(string $data): array
36    {
37        $ary = unpack(
38            'nfirstCode/' .
39            'nentryCount', substr($data, 0, 4)
40        );
41
42        $ary['glyphId'] = array();
43
44        $bytePos = 4;
45        for ($i = 0; $i < $ary['entryCount']; $i++) {
46            $ar = unpack('nglyphIndex', substr($data, $bytePos, 2));
47            $ary['glyphId'][$i] = $ar['glyphIndex'];
48            $bytePos += 2;
49        }
50
51        return $ary;
52    }
53
54}