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author | Max Kostikov <max@kostikov.co> | 2018-09-28 15:46:14 +0200 |
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committer | Max Kostikov <max@kostikov.co> | 2018-09-28 15:46:14 +0200 |
commit | 4a904fa3a8af1c101ede76657249fb7eb47faf60 (patch) | |
tree | 544509813fb68579ef2b556ce879a971d183269a /vendor/ramsey/uuid/src/Codec/TimestampFirstCombCodec.php | |
parent | f5f6ec3d71acb3e0488386819d5060e59331ec23 (diff) | |
parent | c13d7e29ef9676b0f0e4ae23aa52e203f4ad8895 (diff) | |
download | volse-hubzilla-4a904fa3a8af1c101ede76657249fb7eb47faf60.tar.gz volse-hubzilla-4a904fa3a8af1c101ede76657249fb7eb47faf60.tar.bz2 volse-hubzilla-4a904fa3a8af1c101ede76657249fb7eb47faf60.zip |
Merge branch 'patch-29' into 'dev'
Patch 29
See merge request Kostikov/core!3
Diffstat (limited to 'vendor/ramsey/uuid/src/Codec/TimestampFirstCombCodec.php')
-rw-r--r-- | vendor/ramsey/uuid/src/Codec/TimestampFirstCombCodec.php | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/vendor/ramsey/uuid/src/Codec/TimestampFirstCombCodec.php b/vendor/ramsey/uuid/src/Codec/TimestampFirstCombCodec.php new file mode 100644 index 000000000..2c4ded89e --- /dev/null +++ b/vendor/ramsey/uuid/src/Codec/TimestampFirstCombCodec.php @@ -0,0 +1,107 @@ +<?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 + * @link https://benramsey.com/projects/ramsey-uuid/ Documentation + * @link https://packagist.org/packages/ramsey/uuid Packagist + * @link https://github.com/ramsey/uuid GitHub + */ +namespace Ramsey\Uuid\Codec; + +use Ramsey\Uuid\UuidInterface; + +/** + * TimestampLastCombCodec encodes and decodes COMB UUIDs which have the timestamp as the first 48 bits. + * To be used with MySQL, PostgreSQL, Oracle. + */ +class TimestampFirstCombCodec extends StringCodec +{ + /** + * Encodes a UuidInterface as a string representation of a timestamp first COMB UUID + * + * @param UuidInterface $uuid + * + * @return string Hexadecimal string representation of a GUID + */ + public function encode(UuidInterface $uuid) + { + $sixPieceComponents = array_values($uuid->getFieldsHex()); + + $this->swapTimestampAndRandomBits($sixPieceComponents); + + return vsprintf( + '%08s-%04s-%04s-%02s%02s-%012s', + $sixPieceComponents + ); + } + + /** + * Encodes a UuidInterface as a binary representation of timestamp first COMB UUID + * + * @param UuidInterface $uuid + * + * @return string Binary string representation of timestamp first COMB UUID + */ + public function encodeBinary(UuidInterface $uuid) + { + $stringEncoding = $this->encode($uuid); + + return hex2bin(str_replace('-', '', $stringEncoding)); + } + + /** + * Decodes a string representation of timestamp first COMB UUID into a UuidInterface object instance + * + * @param string $encodedUuid + * + * @return UuidInterface + * @throws \Ramsey\Uuid\Exception\InvalidUuidStringException + */ + public function decode($encodedUuid) + { + $fivePieceComponents = $this->extractComponents($encodedUuid); + + $this->swapTimestampAndRandomBits($fivePieceComponents); + + return $this->getBuilder()->build($this, $this->getFields($fivePieceComponents)); + } + + /** + * Decodes a binary representation of timestamp first COMB UUID into a UuidInterface object instance + * + * @param string $bytes + * + * @return UuidInterface + * @throws \Ramsey\Uuid\Exception\InvalidUuidStringException + */ + public function decodeBytes($bytes) + { + return $this->decode(bin2hex($bytes)); + } + + /** + * Swaps the first 48 bits with the last 48 bits + * + * @param array $components An array of UUID components (the UUID exploded on its dashes) + * + * @return void + */ + protected function swapTimestampAndRandomBits(array &$components) + { + $last48Bits = $components[4]; + if (count($components) == 6) { + $last48Bits = $components[5]; + $components[5] = $components[0] . $components[1]; + } else { + $components[4] = $components[0] . $components[1]; + } + + $components[0] = substr($last48Bits, 0, 8); + $components[1] = substr($last48Bits, 8, 4); + } +} |