wordpress-seo / vendor_prefixed / chillerlan / php-qrcode / src / Data / AlphaNum.php

AlphaNum.php in Yoast SEO – Advanced SEO with real-time guidance and built-in AI 18.4, at vendor_prefixed/chillerlan/php-qrcode/src/Data/AlphaNum.php

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1	<?php
2
3	/**
4	* Class AlphaNum
5	*
6	* @filesource AlphaNum.php
7	* @created 25.11.2015
8	* @package chillerlan\QRCode\Data
9	* @author Smiley <smiley@chillerlan.net>
10	* @copyright 2015 Smiley
11	* @license MIT
12	*/
13	namespace YoastSEO_Vendor\chillerlan\QRCode\Data;
14
15	use YoastSEO_Vendor\chillerlan\QRCode\QRCode;
16	/**
17	* Alphanumeric mode: 0 to 9, A to Z, space, $ % * + - . / :
18	*/
19	class AlphaNum extends \YoastSEO_Vendor\chillerlan\QRCode\Data\QRDataAbstract
20	{
21	const CHAR_MAP = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', ' ', '$', '%', '*', '+', '-', '.', '/', ':'];
22	/**
23	* @inheritdoc
24	*/
25	protected $datamode = \YoastSEO_Vendor\chillerlan\QRCode\QRCode::DATA_ALPHANUM;
26	/**
27	* @inheritdoc
28	*/
29	protected $lengthBits = [9, 11, 13];
30	/**
31	* @inheritdoc
32	*/
33	protected function write($data)
34	{
35	for ($i = 0; $i + 1 < $this->strlen; $i += 2) {
36	$this->bitBuffer->put($this->getCharCode($data[$i]) * 45 + $this->getCharCode($data[$i + 1]), 11);
37	}
38	if ($i < $this->strlen) {
39	$this->bitBuffer->put($this->getCharCode($data[$i]), 6);
40	}
41	}
42	/**
43	* @param string $chr
44	*
45	* @return int
46	* @throws \chillerlan\QRCode\Data\QRCodeDataException
47	*/
48	protected function getCharCode($chr)
49	{
50	$i = \array_search($chr, $this::CHAR_MAP);
51	if ($i !== \false) {
52	return $i;
53	}
54	throw new \YoastSEO_Vendor\chillerlan\QRCode\Data\QRCodeDataException('illegal char: "' . $chr . '" [' . \ord($chr) . ']');
55	}
56	}
57