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<?php |
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|
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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 <[email protected]> |
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* @copyright 2015 Smiley |
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* @license MIT |
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*/ |
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namespace WCPOS\Vendor\chillerlan\QRCode\Data; |
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|
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use WCPOS\Vendor\chillerlan\QRCode\Common\BitBuffer; |
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use WCPOS\Vendor\chillerlan\QRCode\Common\Mode; |
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use function chr, 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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/** |
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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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{ |
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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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{ |
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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 $versionNumber) : QRDataModeInterface |
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{ |
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$len = $this->getCharCount(); |
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$bitBuffer->put(self::DATAMODE, 4)->put($len, $this::getLengthBits($versionNumber)); |
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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 $versionNumber) : string |
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{ |
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$length = $bitBuffer->read(self::getLengthBits($versionNumber)); |
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if ($bitBuffer->available() < 8 * $length) { |
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throw new QRCodeDataException('not enough bits available'); |
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// @codeCoverageIgnore |
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} |
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$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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