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https://github.com/chillerlan/php-qrcode.git
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codemasher
61 lines
1.3 KiB
PHP
61 lines
1.3 KiB
PHP
<?php
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/**
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* Class AlphaNum
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*
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* @filesource AlphaNum.php
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* @created 25.11.2015
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* @package chillerlan\QRCode\Data
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* @author Smiley <smiley@chillerlan.net>
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* @copyright 2015 Smiley
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* @license MIT
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*/
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namespace chillerlan\QRCode\Data;
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use chillerlan\QRCode\QRCode;
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use function ord, sprintf;
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/**
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* Alphanumeric mode: 0 to 9, A to Z, space, $ % * + - . / :
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*
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* ISO/IEC 18004:2000 Section 8.3.3
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* ISO/IEC 18004:2000 Section 8.4.3
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*/
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final class AlphaNum extends QRDataAbstract{
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protected int $datamode = QRCode::DATA_ALPHANUM;
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protected array $lengthBits = [9, 11, 13];
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/**
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* @inheritdoc
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*/
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protected function write(string $data):void{
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for($i = 0; $i + 1 < $this->strlen; $i += 2){
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$this->bitBuffer->put($this->getCharCode($data[$i]) * 45 + $this->getCharCode($data[$i + 1]), 11);
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}
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if($i < $this->strlen){
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$this->bitBuffer->put($this->getCharCode($data[$i]), 6);
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}
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}
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/**
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* get the code for the given character
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*
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* @throws \chillerlan\QRCode\Data\QRCodeDataException on an illegal character occurence
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*/
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protected function getCharCode(string $chr):int{
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if(!isset($this::CHAR_MAP_ALPHANUM[$chr])){
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throw new QRCodeDataException(sprintf('illegal char: "%s" [%d]', $chr, ord($chr)));
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}
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return $this::CHAR_MAP_ALPHANUM[$chr];
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}
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}
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