mirror of
https://github.com/chillerlan/php-qrcode.git
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smiley
73 lines
1.4 KiB
PHP
73 lines
1.4 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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/**
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* Alphanumeric mode: 0 to 9, A to Z, space, $ % * + - . / :
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*/
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class AlphaNum extends QRDataAbstract{
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const CHAR_MAP = [
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
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'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
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'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
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'W', 'X', 'Y', 'Z', ' ', '$', '%', '*',
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'+', '-', '.', '/', ':',
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];
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/**
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* @inheritdoc
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*/
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protected $datamode = QRCode::DATA_ALPHANUM;
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/**
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* @inheritdoc
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*/
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protected $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 $data){
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for($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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* @param string $chr
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*
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* @return int
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* @throws \chillerlan\QRCode\Data\QRCodeDataException
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*/
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protected function getCharCode(string $chr):int {
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$i = array_search($chr, $this::CHAR_MAP);
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if($i !== false){
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return $i;
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}
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throw new QRCodeDataException('illegal char: "'.$chr.'" ['.ord($chr).']');
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}
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}
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