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<?php |
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/** |
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* Author: Nil Portugués Calderó <[email protected]> |
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* Date: 2/14/15 |
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* Time: 11:09 AM |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace NilPortugues\Uuid\Versions; |
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/** |
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* Class AbstractUuid |
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* @package NilPortugues\Uuid\Versions |
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*/ |
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abstract class AbstractUuid |
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{ |
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const TIME_LOW = 'time_low'; |
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const TIME_MID = 'time_mid'; |
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const TIME_HI_AND_VERSION = 'time_hi_and_version'; |
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const CLOCK_SEQ_HI_AND_RESERVED = 'clock_seq_hi_and_reserved'; |
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const CLOCK_SEQ_LOW = 'clock_seq_low'; |
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const NODE = 'node'; |
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/** |
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* Returns a version 3 or 5 UUID based on the hash (md5 or sha1) of a |
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* namespace identifier (which is a UUID) and a name (which is a string) |
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* |
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* @param string $hash The hash to use when creating the UUID |
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* @param int $version The UUID version to be generated |
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* |
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* @return array |
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*/ |
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protected static function uuidFromHashedName($hash, $version) |
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{ |
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// Set the version number |
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$timeHi = \hexdec(\substr($hash, 12, 4)) & 0x0fff; |
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$timeHi &= ~(0xf000); |
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$timeHi |= $version << 12; |
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// Set the variant to RFC 4122 |
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$clockSeqHi = \hexdec(\substr($hash, 16, 2)) & 0x3f; |
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$clockSeqHi &= ~(0xc0); |
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$clockSeqHi |= 0x80; |
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return [ |
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self::TIME_LOW => \substr($hash, 0, 8), |
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self::TIME_MID => \substr($hash, 8, 4), |
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self::TIME_HI_AND_VERSION => \sprintf('%04x', $timeHi), |
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self::CLOCK_SEQ_HI_AND_RESERVED => \sprintf('%02x', $clockSeqHi), |
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self::CLOCK_SEQ_LOW => \substr($hash, 18, 2), |
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self::NODE => \substr($hash, 20, 12), |
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]; |
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} |
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/** |
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* Converts this UUID into a string representation |
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* |
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* @param array $fields |
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* |
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* @return string |
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*/ |
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protected static function toString(array $fields) |
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{ |
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return \vsprintf( |
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'%08s-%04s-%04s-%02s%02s-%012s', |
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$fields |
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); |
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} |
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} |
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nilportugues /
uuid
