mirror of
https://github.com/chillerlan/php-qrcode.git
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smiley
86 lines
1.5 KiB
PHP
86 lines
1.5 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\BitBuffer;
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use chillerlan\QRCode\QRConst;
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/**
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*
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*/
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class AlphaNum extends QRDataAbstract{
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const CHAR_MAP = [
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36 => ' ',
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37 => '$',
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38 => '%',
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39 => '*',
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40 => '+',
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41 => '-',
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42 => '.',
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43 => '/',
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44 => ':',
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];
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/**
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* @var int
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*/
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public $mode = QRConst::MODE_ALPHANUM;
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/**
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* @var array
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*/
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protected $lengthBits = [9, 11, 13];
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/**
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* @param \chillerlan\QRCode\BitBuffer $buffer
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*/
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public function write(BitBuffer &$buffer){
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$i = 0;
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while($i + 1 < $this->dataLength){
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$buffer->put($this->getCharCode($this->data[$i]) * 45 + $this->getCharCode($this->data[$i + 1]), 11);
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$i += 2;
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}
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if($i < $this->dataLength){
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$buffer->put($this->getCharCode($this->data[$i]), 6);
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}
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}
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/**
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* @param string $c
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*
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* @return int
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* @throws \chillerlan\QRCode\Data\QRCodeDataException
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*/
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private static function getCharCode($c){
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$c = ord($c);
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switch(true){
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case ord('0') <= $c && $c <= ord('9'): return $c - ord('0');
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case ord('A') <= $c && $c <= ord('Z'): return $c - ord('A') + 10;
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default:
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foreach(self::CHAR_MAP as $i => $char){
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if(ord($char) === $c){
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return $i;
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}
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}
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}
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throw new QRCodeDataException('illegal char: '.$c);
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}
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}
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