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<?php |
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/** |
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* Class Byte |
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* |
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* @filesource Byte.php |
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* @created 25.11.2015 |
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* @package chillerlan\QRCode\Data |
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* @author Smiley <[email protected]> |
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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 ord; |
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/** |
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* 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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protected static int $datamode = Mode::DATA_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 $string):bool{ |
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return !empty($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 $versionNumber):void{ |
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$len = $this->getCharCount(); |
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$bitBuffer |
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->put($this::$datamode, 4) |
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->put($len, Mode::getLengthBitsForVersion($this::$datamode, $versionNumber)) |
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; |
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$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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} |
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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 = $bitBuffer->read(Mode::getLengthBitsForVersion(self::$datamode, $versionNumber)); |
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if($bitBuffer->available() < 8 * $length){ |
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throw new QRCodeDataException('not enough bits available'); |
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} |
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$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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chillerlan /
php-qrcode
