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Codec.tar
OrderedTimeCodec.php 0000644 00000007216 15107426536 0010435 0 ustar 00 <?php /** * This file is part of the ramsey/uuid library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Codec; use Ramsey\Uuid\Exception\InvalidArgumentException; use Ramsey\Uuid\Exception\UnsupportedOperationException; use Ramsey\Uuid\Rfc4122\FieldsInterface as Rfc4122FieldsInterface; use Ramsey\Uuid\Uuid; use Ramsey\Uuid\UuidInterface; use function strlen; use function substr; /** * OrderedTimeCodec encodes and decodes a UUID, optimizing the byte order for * more efficient storage * * For binary representations of version 1 UUID, this codec may be used to * reorganize the time fields, making the UUID closer to sequential when storing * the bytes. According to Percona, this optimization can improve database * INSERTs and SELECTs using the UUID column as a key. * * The string representation of the UUID will remain unchanged. Only the binary * representation is reordered. * * **PLEASE NOTE:** Binary representations of UUIDs encoded with this codec must * be decoded with this codec. Decoding using another codec can result in * malformed UUIDs. * * @link https://www.percona.com/blog/2014/12/19/store-uuid-optimized-way/ Storing UUID Values in MySQL * * @psalm-immutable */ class OrderedTimeCodec extends StringCodec { /** * Returns a binary string representation of a UUID, with the timestamp * fields rearranged for optimized storage * * @inheritDoc * @psalm-return non-empty-string * @psalm-suppress MoreSpecificReturnType we know that the retrieved `string` is never empty * @psalm-suppress LessSpecificReturnStatement we know that the retrieved `string` is never empty */ public function encodeBinary(UuidInterface $uuid): string { if ( !($uuid->getFields() instanceof Rfc4122FieldsInterface) || $uuid->getFields()->getVersion() !== Uuid::UUID_TYPE_TIME ) { throw new InvalidArgumentException( 'Expected RFC 4122 version 1 (time-based) UUID' ); } $bytes = $uuid->getFields()->getBytes(); /** @phpstan-ignore-next-line PHPStan complains that this is not a non-empty-string. */ return $bytes[6] . $bytes[7] . $bytes[4] . $bytes[5] . $bytes[0] . $bytes[1] . $bytes[2] . $bytes[3] . substr($bytes, 8); } /** * Returns a UuidInterface derived from an ordered-time binary string * representation * * @throws InvalidArgumentException if $bytes is an invalid length * * @inheritDoc */ public function decodeBytes(string $bytes): UuidInterface { if (strlen($bytes) !== 16) { throw new InvalidArgumentException( '$bytes string should contain 16 characters.' ); } // Rearrange the bytes to their original order. $rearrangedBytes = $bytes[4] . $bytes[5] . $bytes[6] . $bytes[7] . $bytes[2] . $bytes[3] . $bytes[0] . $bytes[1] . substr($bytes, 8); $uuid = parent::decodeBytes($rearrangedBytes); if ( !($uuid->getFields() instanceof Rfc4122FieldsInterface) || $uuid->getFields()->getVersion() !== Uuid::UUID_TYPE_TIME ) { throw new UnsupportedOperationException( 'Attempting to decode a non-time-based UUID using ' . 'OrderedTimeCodec' ); } return $uuid; } } StringCodec.php 0000644 00000006543 15107426536 0007502 0 ustar 00 <?php /** * This file is part of the ramsey/uuid library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Codec; use Ramsey\Uuid\Builder\UuidBuilderInterface; use Ramsey\Uuid\Exception\InvalidArgumentException; use Ramsey\Uuid\Exception\InvalidUuidStringException; use Ramsey\Uuid\Uuid; use Ramsey\Uuid\UuidInterface; use function bin2hex; use function hex2bin; use function implode; use function sprintf; use function str_replace; use function strlen; use function substr; /** * StringCodec encodes and decodes RFC 4122 UUIDs * * @link http://tools.ietf.org/html/rfc4122 * * @psalm-immutable */ class StringCodec implements CodecInterface { /** * Constructs a StringCodec * * @param UuidBuilderInterface $builder The builder to use when encoding UUIDs */ public function __construct(private UuidBuilderInterface $builder) { } public function encode(UuidInterface $uuid): string { $hex = bin2hex($uuid->getFields()->getBytes()); /** @var non-empty-string */ return sprintf( '%08s-%04s-%04s-%04s-%012s', substr($hex, 0, 8), substr($hex, 8, 4), substr($hex, 12, 4), substr($hex, 16, 4), substr($hex, 20), ); } /** * @psalm-return non-empty-string * @psalm-suppress MoreSpecificReturnType we know that the retrieved `string` is never empty * @psalm-suppress LessSpecificReturnStatement we know that the retrieved `string` is never empty */ public function encodeBinary(UuidInterface $uuid): string { /** @phpstan-ignore-next-line PHPStan complains that this is not a non-empty-string. */ return $uuid->getFields()->getBytes(); } /** * @throws InvalidUuidStringException * * @inheritDoc */ public function decode(string $encodedUuid): UuidInterface { return $this->builder->build($this, $this->getBytes($encodedUuid)); } public function decodeBytes(string $bytes): UuidInterface { if (strlen($bytes) !== 16) { throw new InvalidArgumentException( '$bytes string should contain 16 characters.' ); } return $this->builder->build($this, $bytes); } /** * Returns the UUID builder */ protected function getBuilder(): UuidBuilderInterface { return $this->builder; } /** * Returns a byte string of the UUID */ protected function getBytes(string $encodedUuid): string { $parsedUuid = str_replace( ['urn:', 'uuid:', 'URN:', 'UUID:', '{', '}', '-'], '', $encodedUuid ); $components = [ substr($parsedUuid, 0, 8), substr($parsedUuid, 8, 4), substr($parsedUuid, 12, 4), substr($parsedUuid, 16, 4), substr($parsedUuid, 20), ]; if (!Uuid::isValid(implode('-', $components))) { throw new InvalidUuidStringException( 'Invalid UUID string: ' . $encodedUuid ); } return (string) hex2bin($parsedUuid); } } TimestampLastCombCodec.php 0000644 00000003116 15107426536 0011615 0 ustar 00 <?php /** * This file is part of the ramsey/uuid library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Codec; /** * TimestampLastCombCodec encodes and decodes COMBs, with the timestamp as the * last 48 bits * * The CombGenerator when used with the StringCodec (and, by proxy, the * TimestampLastCombCodec) adds the timestamp to the last 48 bits of the COMB. * The TimestampLastCombCodec is provided for the sake of consistency. In * practice, it is identical to the standard StringCodec but, it may be used * with the CombGenerator for additional context when reading code. * * Consider the following code. By default, the codec used by UuidFactory is the * StringCodec, but here, we explicitly set the TimestampLastCombCodec. It is * redundant, but it is clear that we intend this COMB to be generated with the * timestamp appearing at the end. * * ``` php * $factory = new UuidFactory(); * * $factory->setCodec(new TimestampLastCombCodec($factory->getUuidBuilder())); * * $factory->setRandomGenerator(new CombGenerator( * $factory->getRandomGenerator(), * $factory->getNumberConverter() * )); * * $timestampLastComb = $factory->uuid4(); * ``` * * @link https://www.informit.com/articles/printerfriendly/25862 The Cost of GUIDs as Primary Keys * * @psalm-immutable */ class TimestampLastCombCodec extends StringCodec { } GuidStringCodec.php 0000644 00000003612 15107426536 0010305 0 ustar 00 <?php /** * This file is part of the ramsey/uuid library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Codec; use Ramsey\Uuid\Guid\Guid; use Ramsey\Uuid\UuidInterface; use function bin2hex; use function sprintf; use function substr; /** * GuidStringCodec encodes and decodes globally unique identifiers (GUID) * * @see Guid * * @psalm-immutable */ class GuidStringCodec extends StringCodec { public function encode(UuidInterface $uuid): string { $hex = bin2hex($uuid->getFields()->getBytes()); /** @var non-empty-string */ return sprintf( '%02s%02s%02s%02s-%02s%02s-%02s%02s-%04s-%012s', substr($hex, 6, 2), substr($hex, 4, 2), substr($hex, 2, 2), substr($hex, 0, 2), substr($hex, 10, 2), substr($hex, 8, 2), substr($hex, 14, 2), substr($hex, 12, 2), substr($hex, 16, 4), substr($hex, 20), ); } public function decode(string $encodedUuid): UuidInterface { $bytes = $this->getBytes($encodedUuid); return $this->getBuilder()->build($this, $this->swapBytes($bytes)); } public function decodeBytes(string $bytes): UuidInterface { // Specifically call parent::decode to preserve correct byte order return parent::decode(bin2hex($bytes)); } /** * Swaps bytes according to the GUID rules */ private function swapBytes(string $bytes): string { return $bytes[3] . $bytes[2] . $bytes[1] . $bytes[0] . $bytes[5] . $bytes[4] . $bytes[7] . $bytes[6] . substr($bytes, 8); } } CodecInterface.php 0000644 00000004022 15107426536 0010122 0 ustar 00 <?php /** * This file is part of the ramsey/uuid library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Codec; use Ramsey\Uuid\UuidInterface; /** * A codec encodes and decodes a UUID according to defined rules * * @psalm-immutable */ interface CodecInterface { /** * Returns a hexadecimal string representation of a UuidInterface * * @param UuidInterface $uuid The UUID for which to create a hexadecimal * string representation * * @return string Hexadecimal string representation of a UUID * * @psalm-return non-empty-string */ public function encode(UuidInterface $uuid): string; /** * Returns a binary string representation of a UuidInterface * * @param UuidInterface $uuid The UUID for which to create a binary string * representation * * @return string Binary string representation of a UUID * * @psalm-return non-empty-string */ public function encodeBinary(UuidInterface $uuid): string; /** * Returns a UuidInterface derived from a hexadecimal string representation * * @param string $encodedUuid The hexadecimal string representation to * convert into a UuidInterface instance * * @return UuidInterface An instance of a UUID decoded from a hexadecimal * string representation */ public function decode(string $encodedUuid): UuidInterface; /** * Returns a UuidInterface derived from a binary string representation * * @param string $bytes The binary string representation to convert into a * UuidInterface instance * * @return UuidInterface An instance of a UUID decoded from a binary string * representation */ public function decodeBytes(string $bytes): UuidInterface; } TimestampFirstCombCodec.php 0000644 00000006516 15107426536 0012010 0 ustar 00 <?php /** * This file is part of the ramsey/uuid library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Codec; use Ramsey\Uuid\Exception\InvalidUuidStringException; use Ramsey\Uuid\UuidInterface; use function bin2hex; use function sprintf; use function substr; use function substr_replace; /** * TimestampFirstCombCodec encodes and decodes COMBs, with the timestamp as the * first 48 bits * * In contrast with the TimestampLastCombCodec, the TimestampFirstCombCodec * adds the timestamp to the first 48 bits of the COMB. To generate a * timestamp-first COMB, set the TimestampFirstCombCodec as the codec, along * with the CombGenerator as the random generator. * * ``` php * $factory = new UuidFactory(); * * $factory->setCodec(new TimestampFirstCombCodec($factory->getUuidBuilder())); * * $factory->setRandomGenerator(new CombGenerator( * $factory->getRandomGenerator(), * $factory->getNumberConverter() * )); * * $timestampFirstComb = $factory->uuid4(); * ``` * * @link https://www.informit.com/articles/printerfriendly/25862 The Cost of GUIDs as Primary Keys * * @psalm-immutable */ class TimestampFirstCombCodec extends StringCodec { /** * @psalm-return non-empty-string * @psalm-suppress MoreSpecificReturnType we know that the retrieved `string` is never empty * @psalm-suppress LessSpecificReturnStatement we know that the retrieved `string` is never empty */ public function encode(UuidInterface $uuid): string { $bytes = $this->swapBytes($uuid->getFields()->getBytes()); return sprintf( '%08s-%04s-%04s-%04s-%012s', bin2hex(substr($bytes, 0, 4)), bin2hex(substr($bytes, 4, 2)), bin2hex(substr($bytes, 6, 2)), bin2hex(substr($bytes, 8, 2)), bin2hex(substr($bytes, 10)) ); } /** * @psalm-return non-empty-string * @psalm-suppress MoreSpecificReturnType we know that the retrieved `string` is never empty * @psalm-suppress LessSpecificReturnStatement we know that the retrieved `string` is never empty */ public function encodeBinary(UuidInterface $uuid): string { /** @phpstan-ignore-next-line PHPStan complains that this is not a non-empty-string. */ return $this->swapBytes($uuid->getFields()->getBytes()); } /** * @throws InvalidUuidStringException * * @inheritDoc */ public function decode(string $encodedUuid): UuidInterface { $bytes = $this->getBytes($encodedUuid); return $this->getBuilder()->build($this, $this->swapBytes($bytes)); } public function decodeBytes(string $bytes): UuidInterface { return $this->getBuilder()->build($this, $this->swapBytes($bytes)); } /** * Swaps bytes according to the timestamp-first COMB rules */ private function swapBytes(string $bytes): string { $first48Bits = substr($bytes, 0, 6); $last48Bits = substr($bytes, -6); $bytes = substr_replace($bytes, $last48Bits, 0, 6); $bytes = substr_replace($bytes, $first48Bits, -6); return $bytes; } }
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