diff options
Diffstat (limited to 'vendor/chillerlan/php-qrcode/src/Data/Kanji.php')
| -rw-r--r-- | vendor/chillerlan/php-qrcode/src/Data/Kanji.php | 171 |
1 files changed, 147 insertions, 24 deletions
diff --git a/vendor/chillerlan/php-qrcode/src/Data/Kanji.php b/vendor/chillerlan/php-qrcode/src/Data/Kanji.php index e106c50f1..ccde82642 100644 --- a/vendor/chillerlan/php-qrcode/src/Data/Kanji.php +++ b/vendor/chillerlan/php-qrcode/src/Data/Kanji.php @@ -2,9 +2,7 @@ /** * Class Kanji * - * @filesource Kanji.php * @created 25.11.2015 - * @package chillerlan\QRCode\Data * @author Smiley <smiley@chillerlan.net> * @copyright 2015 Smiley * @license MIT @@ -12,58 +10,183 @@ namespace chillerlan\QRCode\Data; -use chillerlan\QRCode\QRCode; - -use function mb_strlen, ord, sprintf, strlen; +use chillerlan\QRCode\Common\{BitBuffer, Mode}; +use Throwable; +use function chr, implode, intdiv, is_string, mb_convert_encoding, mb_detect_encoding, + mb_detect_order, mb_internal_encoding, mb_strlen, ord, sprintf, strlen; /** - * Kanji mode: double-byte characters from the Shift JIS character set + * Kanji mode: 13-bit double-byte characters from the Shift-JIS character set * * ISO/IEC 18004:2000 Section 8.3.5 * ISO/IEC 18004:2000 Section 8.4.5 + * + * @see https://en.wikipedia.org/wiki/Shift_JIS#As_defined_in_JIS_X_0208:1997 + * @see http://www.rikai.com/library/kanjitables/kanji_codes.sjis.shtml + * @see https://gist.github.com/codemasher/d07d3e6e9346c08e7a41b8b978784952 */ -final class Kanji extends QRDataAbstract{ +final class Kanji extends QRDataModeAbstract{ - protected int $datamode = QRCode::DATA_KANJI; + /** + * possible values: SJIS, SJIS-2004 + * + * SJIS-2004 may produce errors in PHP < 8 + * + * @var string + */ + public const ENCODING = 'SJIS'; - protected array $lengthBits = [8, 10, 12]; + /** + * @inheritDoc + */ + public const DATAMODE = Mode::KANJI; + + /** + * @inheritDoc + */ + protected function getCharCount():int{ + return mb_strlen($this->data, self::ENCODING); + } + + /** + * @inheritDoc + */ + public function getLengthInBits():int{ + return ($this->getCharCount() * 13); + } /** - * @inheritdoc + * @inheritDoc + * @throws \chillerlan\QRCode\Data\QRCodeDataException */ - protected function getLength(string $data):int{ - return mb_strlen($data, 'SJIS'); + public static function convertEncoding(string $string):string{ + mb_detect_order([mb_internal_encoding(), 'UTF-8', 'SJIS', 'SJIS-2004']); + + $detected = mb_detect_encoding($string, null, true); + + if($detected === false){ + throw new QRCodeDataException('mb_detect_encoding error'); + } + + if($detected === self::ENCODING){ + return $string; + } + + $string = mb_convert_encoding($string, self::ENCODING, $detected); + + if(!is_string($string)){ + throw new QRCodeDataException(sprintf('invalid encoding: %s', $detected)); + } + + return $string; } /** - * @inheritdoc + * checks if a string qualifies as SJIS Kanji + */ + public static function validateString(string $string):bool{ + + try{ + $string = self::convertEncoding($string); + } + catch(Throwable $e){ + return false; + } + + $len = strlen($string); + + if($len < 2 || ($len % 2) !== 0){ + return false; + } + + for($i = 0; $i < $len; $i += 2){ + $byte1 = ord($string[$i]); + $byte2 = ord($string[($i + 1)]); + + // byte 1 unused and vendor ranges + if($byte1 < 0x81 || ($byte1 > 0x84 && $byte1 < 0x88) || ($byte1 > 0x9f && $byte1 < 0xe0) || $byte1 > 0xea){ + return false; + } + + // byte 2 unused ranges + if($byte2 < 0x40 || $byte2 === 0x7f || $byte2 > 0xfc){ + return false; + } + + } + + return true; + } + + /** + * @inheritDoc * * @throws \chillerlan\QRCode\Data\QRCodeDataException on an illegal character occurence */ - protected function write(string $data):void{ - $len = strlen($data); + public function write(BitBuffer $bitBuffer, int $versionNumber):QRDataModeInterface{ + + $bitBuffer + ->put(self::DATAMODE, 4) + ->put($this->getCharCount(), $this::getLengthBits($versionNumber)) + ; + + $len = strlen($this->data); - for($i = 0; $i + 1 < $len; $i += 2){ - $c = ((0xff & ord($data[$i])) << 8) | (0xff & ord($data[$i + 1])); + for($i = 0; ($i + 1) < $len; $i += 2){ + $c = (((0xff & ord($this->data[$i])) << 8) | (0xff & ord($this->data[($i + 1)]))); - if($c >= 0x8140 && $c <= 0x9FFC){ + if($c >= 0x8140 && $c <= 0x9ffc){ $c -= 0x8140; } - elseif($c >= 0xE040 && $c <= 0xEBBF){ - $c -= 0xC140; + elseif($c >= 0xe040 && $c <= 0xebbf){ + $c -= 0xc140; } else{ - throw new QRCodeDataException(sprintf('illegal char at %d [%d]', $i + 1, $c)); + throw new QRCodeDataException(sprintf('illegal char at %d [%d]', ($i + 1), $c)); } - $this->bitBuffer->put(((($c >> 8) & 0xff) * 0xC0) + ($c & 0xff), 13); - + $bitBuffer->put((((($c >> 8) & 0xff) * 0xc0) + ($c & 0xff)), 13); } if($i < $len){ - throw new QRCodeDataException(sprintf('illegal char at %d', $i + 1)); + throw new QRCodeDataException(sprintf('illegal char at %d', ($i + 1))); + } + + return $this; + } + + /** + * @inheritDoc + * + * @throws \chillerlan\QRCode\Data\QRCodeDataException + */ + public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):string{ + $length = $bitBuffer->read(self::getLengthBits($versionNumber)); + + if($bitBuffer->available() < ($length * 13)){ + throw new QRCodeDataException('not enough bits available'); // @codeCoverageIgnore + } + + // Each character will require 2 bytes. Read the characters as 2-byte pairs and decode as SJIS afterwards + $buffer = []; + $offset = 0; + + while($length > 0){ + // Each 13 bits encodes a 2-byte character + $twoBytes = $bitBuffer->read(13); + $assembledTwoBytes = ((intdiv($twoBytes, 0x0c0) << 8) | ($twoBytes % 0x0c0)); + + $assembledTwoBytes += ($assembledTwoBytes < 0x01f00) + ? 0x08140 // In the 0x8140 to 0x9FFC range + : 0x0c140; // In the 0xE040 to 0xEBBF range + + $buffer[$offset] = chr(0xff & ($assembledTwoBytes >> 8)); + $buffer[($offset + 1)] = chr(0xff & $assembledTwoBytes); + $offset += 2; + $length--; } + return mb_convert_encoding(implode('', $buffer), mb_internal_encoding(), self::ENCODING); } } |