人事系统开发
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87 lines
1.6 KiB
PHP
87 lines
1.6 KiB
PHP
<?php
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/**
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* Class Byte
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*
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* @created 25.11.2015
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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\Common\{BitBuffer, Mode};
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use function chr;
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use function ord;
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/**
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* 8-bit Byte mode, ISO-8859-1 or UTF-8
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*
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* ISO/IEC 18004:2000 Section 8.3.4
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* ISO/IEC 18004:2000 Section 8.4.4
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*/
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final class Byte extends QRDataModeAbstract{
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/**
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* @inheritDoc
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*/
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public const DATAMODE = Mode::BYTE;
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/**
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* @inheritDoc
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*/
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public function getLengthInBits():int{
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return ($this->getCharCount() * 8);
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}
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/**
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* @inheritDoc
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*/
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public static function validateString(string $string):bool{
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return $string !== '';
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}
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/**
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* @inheritDoc
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*/
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public function write(BitBuffer $bitBuffer, int $versionNumber):QRDataModeInterface{
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$len = $this->getCharCount();
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$bitBuffer
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->put(self::DATAMODE, 4)
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->put($len, $this::getLengthBits($versionNumber))
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;
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$i = 0;
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while($i < $len){
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$bitBuffer->put(ord($this->data[$i]), 8);
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$i++;
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}
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return $this;
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}
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/**
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* @inheritDoc
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*
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* @throws \chillerlan\QRCode\Data\QRCodeDataException
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*/
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public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):string{
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$length = $bitBuffer->read(self::getLengthBits($versionNumber));
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if($bitBuffer->available() < (8 * $length)){
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throw new QRCodeDataException('not enough bits available'); // @codeCoverageIgnore
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}
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$readBytes = '';
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for($i = 0; $i < $length; $i++){
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$readBytes .= chr($bitBuffer->read(8));
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}
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return $readBytes;
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}
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}
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