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<?php
/**
* Interface QRDataModeInterface
*
* @created 01.12.2015
* @author Smiley <smiley@chillerlan.net>
* @copyright 2015 Smiley
* @license MIT
*/
namespace chillerlan\QRCode\Data;
use chillerlan\QRCode\Common\BitBuffer;
/**
* Specifies the methods reqired for the data modules (Number, Alphanum, Byte and Kanji)
*/
interface QRDataModeInterface{
/**
* the current data mode: Number, Alphanum, Kanji, Hanzi, Byte, ECI
*
* tbh I hate this constant here, but it's part of the interface, so I can't just declare it in the abstract class.
* (phan will complain about a PhanAccessOverridesFinalConstant)
*
* @see https://wiki.php.net/rfc/final_class_const
*
* @var int
* @see \chillerlan\QRCode\Common\Mode
* @internal do not call this constant from the interface, but rather from one of the child classes
*/
public const DATAMODE = -1;
/**
* retruns the length in bits of the data string
*/
public function getLengthInBits():int;
/**
* encoding conversion helper
*
* @throws \chillerlan\QRCode\Data\QRCodeDataException
*/
public static function convertEncoding(string $string):string;
/**
* checks if the given string qualifies for the encoder module
*/
public static function validateString(string $string):bool;
/**
* writes the actual data string to the BitBuffer, uses the given version to determine the length bits
*
* @see \chillerlan\QRCode\Data\QRData::writeBitBuffer()
*/
public function write(BitBuffer $bitBuffer, int $versionNumber):QRDataModeInterface;
/**
* reads a segment from the BitBuffer and decodes in the current data mode
*/
public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):string;
}
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