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 parseData
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1<?php
2declare(strict_types=1);
3/**
4 * Pop PHP Framework (https://www.popphp.org/)
5 *
6 * @link       https://github.com/popphp/popphp-framework
7 * @author     Nick Sagona, III <nick@popphp.org>
8 * @copyright  Copyright (c) 2009-2026 Nick Sagona, III
9 * @license    https://www.popphp.org/license     New BSD License
10 */
11
12/**
13 * @namespace
14 */
15namespace Pop\Pdf\Build\Font\TrueType\Table\Cmap;
16
17/**
18 * CMAP trimmed-table class
19 *
20 * @category   Pop
21 * @package    Pop\Pdf
22 * @author     Nick Sagona, III <nick@popphp.org>
23 * @copyright  Copyright (c) 2009-2026 Nick Sagona, III
24 * @license    https://www.popphp.org/license     New BSD License
25 * @version    6.0.0
26 */
27class TrimmedTable
28{
29
30    /**
31     * Method to parse the Trimmed Table (Format 6) CMAP data
32     *
33     * @param  string $data
34     * @return array
35     */
36    public static function parseData(string $data): array
37    {
38        $ary = unpack(
39            'nfirstCode/' .
40            'nentryCount', substr($data, 0, 4)
41        );
42
43        $ary['glyphId'] = array();
44
45        $bytePos = 4;
46        for ($i = 0; $i < $ary['entryCount']; $i++) {
47            $ar = unpack('nglyphIndex', substr($data, $bytePos, 2));
48            $ary['glyphId'][$i] = $ar['glyphIndex'];
49            $bytePos += 2;
50        }
51
52        return $ary;
53    }
54
55}