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Diffstat (limited to 'vendor/chillerlan/php-qrcode/src/Common/EccLevel.php')
| -rw-r--r-- | vendor/chillerlan/php-qrcode/src/Common/EccLevel.php | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/vendor/chillerlan/php-qrcode/src/Common/EccLevel.php b/vendor/chillerlan/php-qrcode/src/Common/EccLevel.php new file mode 100644 index 000000000..789d7f79d --- /dev/null +++ b/vendor/chillerlan/php-qrcode/src/Common/EccLevel.php @@ -0,0 +1,223 @@ +<?php +/** + * Class EccLevel + * + * @created 19.11.2020 + * @author smiley <smiley@chillerlan.net> + * @copyright 2020 smiley + * @license MIT + */ + +namespace chillerlan\QRCode\Common; + +use chillerlan\QRCode\QRCodeException; +use function array_column; + +/** + * This class encapsulates the four error correction levels defined by the QR code standard. + */ +final class EccLevel{ + + // ISO/IEC 18004:2000 Tables 12, 25 + + /** @var int */ + public const L = 0b01; // 7%. + /** @var int */ + public const M = 0b00; // 15%. + /** @var int */ + public const Q = 0b11; // 25%. + /** @var int */ + public const H = 0b10; // 30%. + + /** + * ISO/IEC 18004:2000 Tables 7-11 - Number of symbol characters and input data capacity for versions 1 to 40 + * + * @var int[][] + */ + private const MAX_BITS = [ + // [ L, M, Q, H] // v => modules + [ 0, 0, 0, 0], // 0 => will be ignored, index starts at 1 + [ 152, 128, 104, 72], // 1 => 21 + [ 272, 224, 176, 128], // 2 => 25 + [ 440, 352, 272, 208], // 3 => 29 + [ 640, 512, 384, 288], // 4 => 33 + [ 864, 688, 496, 368], // 5 => 37 + [ 1088, 864, 608, 480], // 6 => 41 + [ 1248, 992, 704, 528], // 7 => 45 + [ 1552, 1232, 880, 688], // 8 => 49 + [ 1856, 1456, 1056, 800], // 9 => 53 + [ 2192, 1728, 1232, 976], // 10 => 57 + [ 2592, 2032, 1440, 1120], // 11 => 61 + [ 2960, 2320, 1648, 1264], // 12 => 65 + [ 3424, 2672, 1952, 1440], // 13 => 69 NICE! + [ 3688, 2920, 2088, 1576], // 14 => 73 + [ 4184, 3320, 2360, 1784], // 15 => 77 + [ 4712, 3624, 2600, 2024], // 16 => 81 + [ 5176, 4056, 2936, 2264], // 17 => 85 + [ 5768, 4504, 3176, 2504], // 18 => 89 + [ 6360, 5016, 3560, 2728], // 19 => 93 + [ 6888, 5352, 3880, 3080], // 20 => 97 + [ 7456, 5712, 4096, 3248], // 21 => 101 + [ 8048, 6256, 4544, 3536], // 22 => 105 + [ 8752, 6880, 4912, 3712], // 23 => 109 + [ 9392, 7312, 5312, 4112], // 24 => 113 + [10208, 8000, 5744, 4304], // 25 => 117 + [10960, 8496, 6032, 4768], // 26 => 121 + [11744, 9024, 6464, 5024], // 27 => 125 + [12248, 9544, 6968, 5288], // 28 => 129 + [13048, 10136, 7288, 5608], // 29 => 133 + [13880, 10984, 7880, 5960], // 30 => 137 + [14744, 11640, 8264, 6344], // 31 => 141 + [15640, 12328, 8920, 6760], // 32 => 145 + [16568, 13048, 9368, 7208], // 33 => 149 + [17528, 13800, 9848, 7688], // 34 => 153 + [18448, 14496, 10288, 7888], // 35 => 157 + [19472, 15312, 10832, 8432], // 36 => 161 + [20528, 15936, 11408, 8768], // 37 => 165 + [21616, 16816, 12016, 9136], // 38 => 169 + [22496, 17728, 12656, 9776], // 39 => 173 + [23648, 18672, 13328, 10208], // 40 => 177 + ]; + + /** + * ISO/IEC 18004:2000 Section 8.9 - Format Information + * + * ECC level -> mask pattern + * + * @var int[][] + */ + private const FORMAT_PATTERN = [ + [ // L + 0b111011111000100, + 0b111001011110011, + 0b111110110101010, + 0b111100010011101, + 0b110011000101111, + 0b110001100011000, + 0b110110001000001, + 0b110100101110110, + ], + [ // M + 0b101010000010010, + 0b101000100100101, + 0b101111001111100, + 0b101101101001011, + 0b100010111111001, + 0b100000011001110, + 0b100111110010111, + 0b100101010100000, + ], + [ // Q + 0b011010101011111, + 0b011000001101000, + 0b011111100110001, + 0b011101000000110, + 0b010010010110100, + 0b010000110000011, + 0b010111011011010, + 0b010101111101101, + ], + [ // H + 0b001011010001001, + 0b001001110111110, + 0b001110011100111, + 0b001100111010000, + 0b000011101100010, + 0b000001001010101, + 0b000110100001100, + 0b000100000111011, + ], + ]; + + /** + * The current ECC level value + * + * L: 0b01 + * M: 0b00 + * Q: 0b11 + * H: 0b10 + */ + private int $eccLevel; + + /** + * @param int $eccLevel containing the two bits encoding a QR Code's error correction level + * + * @todo: accept string values (PHP8+) + * @see https://github.com/chillerlan/php-qrcode/discussions/160 + * + * @throws \chillerlan\QRCode\QRCodeException + */ + public function __construct(int $eccLevel){ + + if((0b11 & $eccLevel) !== $eccLevel){ + throw new QRCodeException('invalid ECC level'); + } + + $this->eccLevel = $eccLevel; + } + + /** + * returns the string representation of the current ECC level + */ + public function __toString():string{ + return [ + self::L => 'L', + self::M => 'M', + self::Q => 'Q', + self::H => 'H', + ][$this->eccLevel]; + } + + /** + * returns the current ECC level + */ + public function getLevel():int{ + return $this->eccLevel; + } + + /** + * returns the ordinal value of the current ECC level + * + * references to the keys of the following tables: + * + * @see \chillerlan\QRCode\Common\EccLevel::MAX_BITS + * @see \chillerlan\QRCode\Common\EccLevel::FORMAT_PATTERN + * @see \chillerlan\QRCode\Common\Version::RSBLOCKS + */ + public function getOrdinal():int{ + return [ + self::L => 0, + self::M => 1, + self::Q => 2, + self::H => 3, + ][$this->eccLevel]; + } + + /** + * returns the format pattern for the given $eccLevel and $maskPattern + */ + public function getformatPattern(MaskPattern $maskPattern):int{ + return self::FORMAT_PATTERN[$this->getOrdinal()][$maskPattern->getPattern()]; + } + + /** + * returns an array with the max bit lengths for version 1-40 and the current ECC level + * + * @return int[] + */ + public function getMaxBits():array{ + $col = array_column(self::MAX_BITS, $this->getOrdinal()); + + unset($col[0]); // remove the inavlid index 0 + + return $col; + } + + /** + * Returns the maximum bit length for the given version and current ECC level + */ + public function getMaxBitsForVersion(Version $version):int{ + return self::MAX_BITS[$version->getVersionNumber()][$this->getOrdinal()]; + } + +} |