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<?php |
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/** |
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* Class Mode |
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* |
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* @created 19.11.2020 |
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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\Common; |
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use chillerlan\QRCode\Data\{AlphaNum, Byte, Hanzi, Kanji, Number}; |
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use chillerlan\QRCode\QRCodeException; |
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/** |
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* Data mode information - ISO 18004:2006, 6.4.1, Tables 2 and 3 |
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*/ |
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final class Mode{ |
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// ISO/IEC 18004:2000 Table 2 |
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/** @var int */ |
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public const TERMINATOR = 0b0000; |
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/** @var int */ |
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public const NUMBER = 0b0001; |
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/** @var int */ |
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public const ALPHANUM = 0b0010; |
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/** @var int */ |
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public const BYTE = 0b0100; |
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/** @var int */ |
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public const KANJI = 0b1000; |
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/** @var int */ |
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public const HANZI = 0b1101; |
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/** @var int */ |
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public const STRCTURED_APPEND = 0b0011; |
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/** @var int */ |
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public const FNC1_FIRST = 0b0101; |
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/** @var int */ |
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public const FNC1_SECOND = 0b1001; |
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/** @var int */ |
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public const ECI = 0b0111; |
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/** |
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* mode length bits for the version breakpoints 1-9, 10-26 and 27-40 |
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* |
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* ISO/IEC 18004:2000 Table 3 - Number of bits in Character Count Indicator |
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*/ |
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public const LENGTH_BITS = [ |
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self::NUMBER => [10, 12, 14], |
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self::ALPHANUM => [ 9, 11, 13], |
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self::BYTE => [ 8, 16, 16], |
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self::KANJI => [ 8, 10, 12], |
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self::HANZI => [ 8, 10, 12], |
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self::ECI => [ 0, 0, 0], |
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]; |
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/** |
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* Map of data mode => interface (detection order) |
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* |
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* @var string[] |
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*/ |
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public const INTERFACES = [ |
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self::NUMBER => Number::class, |
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self::ALPHANUM => AlphaNum::class, |
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self::KANJI => Kanji::class, |
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self::HANZI => Hanzi::class, |
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self::BYTE => Byte::class, |
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]; |
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/** |
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* returns the length bits for the version breakpoints 1-9, 10-26 and 27-40 |
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* |
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* @throws \chillerlan\QRCode\QRCodeException |
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*/ |
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public static function getLengthBitsForVersion(int $mode, int $version):int{ |
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if(!isset(self::LENGTH_BITS[$mode])){ |
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throw new QRCodeException('invalid mode given'); |
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} |
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$minVersion = 0; |
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foreach([9, 26, 40] as $key => $breakpoint){ |
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if($version > $minVersion && $version <= $breakpoint){ |
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return self::LENGTH_BITS[$mode][$key]; |
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} |
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$minVersion = $breakpoint; |
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} |
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throw new QRCodeException(sprintf('invalid version number: %d', $version)); |
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} |
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} |
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chillerlan /
php-qrcode
