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71 lines
1.3 KiB
PHP
71 lines
1.3 KiB
PHP
<?php
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/**
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* Class Kanji
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*
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* @filesource Kanji.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 mb_strlen, ord, sprintf, strlen;
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/**
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* Kanji mode: double-byte characters from the Shift JIS character set
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*/
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class Kanji extends QRDataAbstract{
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/**
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* @inheritdoc
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*/
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protected $datamode = QRCode::DATA_KANJI;
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/**
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* @inheritdoc
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*/
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protected $lengthBits = [8, 10, 12];
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/**
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* @inheritdoc
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*/
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protected function getLength(string $data):int{
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return mb_strlen($data, 'SJIS');
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}
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/**
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* @inheritdoc
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*/
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protected function write(string $data):void{
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$len = strlen($data);
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for($i = 0; $i + 1 < $len; $i += 2){
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$c = ((0xff & ord($data[$i])) << 8) | (0xff & ord($data[$i + 1]));
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if(0x8140 <= $c && $c <= 0x9FFC){
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$c -= 0x8140;
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}
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elseif(0xE040 <= $c && $c <= 0xEBBF){
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$c -= 0xC140;
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}
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else{
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throw new QRCodeDataException(sprintf('illegal char at %d [%d]', $i + 1, $c));
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}
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$this->bitBuffer->put((($c >> 8) & 0xff) * 0xC0 + ($c & 0xff), 13);
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}
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if($i < $len){
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throw new QRCodeDataException(sprintf('illegal char at %d', $i + 1));
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}
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}
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}
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