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<?php |
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/** |
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* Class ECI |
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* |
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* @filesource ECI.php |
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* @created 20.11.2020 |
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* @package chillerlan\QRCode\Data |
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* @author smiley <[email protected]> |
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* @copyright 2020 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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/** |
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* Adds an ECI Designator |
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* |
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* Please note that you have to take care for the correct data encoding when adding with QRCode::add*Segment() |
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*/ |
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final class ECI extends QRDataModeAbstract{ |
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protected static int $datamode = Mode::DATA_ECI; |
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/** |
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* The current ECI encoding id |
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*/ |
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protected int $encoding; |
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/** |
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* @inheritDoc |
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* @noinspection PhpMissingParentConstructorInspection |
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*/ |
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public function __construct(int $encoding){ |
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$this->encoding = $encoding; |
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} |
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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 8; |
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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 $versionNumber):void{ |
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$bitBuffer |
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->put($this::$datamode, 4) |
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->put($this->encoding, 8) |
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; |
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} |
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/** |
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* @throws \chillerlan\QRCode\Data\QRCodeDataException |
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*/ |
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public static function parseValue(BitBuffer $bitBuffer):int{ |
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$firstByte = $bitBuffer->read(8); |
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if(($firstByte & 0x80) === 0){ |
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// just one byte |
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return $firstByte & 0x7f; |
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} |
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if(($firstByte & 0xc0) === 0x80){ |
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// two bytes |
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$secondByte = $bitBuffer->read(8); |
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return (($firstByte & 0x3f) << 8) | $secondByte; |
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} |
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if(($firstByte & 0xe0) === 0xC0){ |
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// three bytes |
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$secondThirdBytes = $bitBuffer->read(16); |
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return (($firstByte & 0x1f) << 16) | $secondThirdBytes; |
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} |
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throw new QRCodeDataException('error decoding ECI value'); |
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} |
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/** |
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* @codeCoverageIgnore Unused, but required as per interface |
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*/ |
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public static function validateString(string $string):bool{ |
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return true; |
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} |
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/** |
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* @codeCoverageIgnore Unused, but required as per interface |
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*/ |
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public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):string{ |
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return ''; |
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} |
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} |
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chillerlan /
php-qrcode
