<?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;
use Ramsey\Uuid\Converter\NumberConverterInterface;
use Ramsey\Uuid\Provider\NodeProviderInterface;
use Ramsey\Uuid\Generator\RandomGeneratorInterface;
use Ramsey\Uuid\Generator\TimeGeneratorInterface;
use Ramsey\Uuid\Codec\CodecInterface;
use Ramsey\Uuid\Builder\UuidBuilderInterface;
class UuidFactory implements UuidFactoryInterface
{
/**
* @var CodecInterface
*/
private $codec = null;
/**
* @var NodeProviderInterface
*/
private $nodeProvider = null;
/**
* @var NumberConverterInterface
*/
private $numberConverter = null;
/**
* @var RandomGeneratorInterface
*/
private $randomGenerator = null;
/**
* @var TimeGeneratorInterface
*/
private $timeGenerator = null;
/**
* @var UuidBuilderInterface
*/
private $uuidBuilder = null;
/**
* Constructs a `UuidFactory` for creating `Ramsey\Uuid\UuidInterface` instances
*
* @param FeatureSet $features A set of features for use when creating UUIDs
*/
public function __construct(FeatureSet $features = null)
{
$features = $features ?: new FeatureSet();
$this->codec = $features->getCodec();
$this->nodeProvider = $features->getNodeProvider();
$this->numberConverter = $features->getNumberConverter();
$this->randomGenerator = $features->getRandomGenerator();
$this->timeGenerator = $features->getTimeGenerator();
$this->uuidBuilder = $features->getBuilder();
}
/**
* Returns the UUID coder-decoder used by this factory
*
* @return CodecInterface
*/
public function getCodec()
{
return $this->codec;
}
/**
* Sets the UUID coder-decoder used by this factory
*
* @param CodecInterface $codec
*/
public function setCodec(CodecInterface $codec)
{
$this->codec = $codec;
}
/**
* Returns the system node ID provider used by this factory
*
* @return NodeProviderInterface
*/
public function getNodeProvider()
{
return $this->nodeProvider;
}
/**
* Returns the random UUID generator used by this factory
*
* @return RandomGeneratorInterface
*/
public function getRandomGenerator()
{
return $this->randomGenerator;
}
/**
* Returns the time-based UUID generator used by this factory
*
* @return TimeGeneratorInterface
*/
public function getTimeGenerator()
{
return $this->timeGenerator;
}
/**
* Sets the time-based UUID generator this factory will use to generate version 1 UUIDs
*
* @param TimeGeneratorInterface $generator
*/
public function setTimeGenerator(TimeGeneratorInterface $generator)
{
$this->timeGenerator = $generator;
}
/**
* Returns the number converter used by this factory
*
* @return NumberConverterInterface
*/
public function getNumberConverter()
{
return $this->numberConverter;
}
/**
* Sets the random UUID generator this factory will use to generate version 4 UUIDs
*
* @param RandomGeneratorInterface $generator
*/
public function setRandomGenerator(RandomGeneratorInterface $generator)
{
$this->randomGenerator = $generator;
}
/**
* Sets the number converter this factory will use
*
* @param NumberConverterInterface $converter
*/
public function setNumberConverter(NumberConverterInterface $converter)
{
$this->numberConverter = $converter;
}
/**
* Returns the UUID builder this factory uses when creating `Uuid` instances
*
* @return UuidBuilderInterface $builder
*/
public function getUuidBuilder()
{
return $this->uuidBuilder;
}
/**
* Sets the UUID builder this factory will use when creating `Uuid` instances
*
* @param UuidBuilderInterface $builder
*/
public function setUuidBuilder(UuidBuilderInterface $builder)
{
$this->uuidBuilder = $builder;
}
public function fromBytes($bytes)
{
return $this->codec->decodeBytes($bytes);
}
public function fromString($uuid)
{
$uuid = strtolower($uuid);
return $this->codec->decode($uuid);
}
public function fromInteger($integer)
{
$hex = $this->numberConverter->toHex($integer);
$hex = str_pad($hex, 32, '0', STR_PAD_LEFT);
return $this->fromString($hex);
}
public function uuid1($node = null, $clockSeq = null)
{
$bytes = $this->timeGenerator->generate($node, $clockSeq);
$hex = bin2hex($bytes);
return $this->uuidFromHashedName($hex, 1);
}
public function uuid3($ns, $name)
{
return $this->uuidFromNsAndName($ns, $name, 3, 'md5');
}
public function uuid4()
{
$bytes = $this->randomGenerator->generate(16);
// When converting the bytes to hex, it turns into a 32-character
// hexadecimal string that looks a lot like an MD5 hash, so at this
// point, we can just pass it to uuidFromHashedName.
$hex = bin2hex($bytes);
return $this->uuidFromHashedName($hex, 4);
}
public function uuid5($ns, $name)
{
return $this->uuidFromNsAndName($ns, $name, 5, 'sha1');
}
/**
* Returns a `Uuid`
*
* Uses the configured builder and codec and the provided array of hexadecimal
* value UUID fields to construct a `Uuid` object.
*
* @param array $fields An array of fields from which to construct a UUID;
* see {@see \Ramsey\Uuid\UuidInterface::getFieldsHex()} for array structure.
* @return UuidInterface
*/
public function uuid(array $fields)
{
return $this->uuidBuilder->build($this->codec, $fields);
}
/**
* Returns a version 3 or 5 namespaced `Uuid`
*
* @param string|UuidInterface $ns The UUID namespace to use
* @param string $name The string to hash together with the namespace
* @param int $version The version of UUID to create (3 or 5)
* @param string $hashFunction The hash function to use when hashing together
* the namespace and name
* @return UuidInterface
*/
protected function uuidFromNsAndName($ns, $name, $version, $hashFunction)
{
if (!($ns instanceof UuidInterface)) {
$ns = $this->codec->decode($ns);
}
$hash = call_user_func($hashFunction, ($ns->getBytes() . $name));
return $this->uuidFromHashedName($hash, $version);
}
/**
* Returns a `Uuid` created from `$hash` with the version field set to `$version`
* and the variant field set for RFC 4122
*
* @param string $hash The hash to use when creating the UUID
* @param int $version The UUID version to set for this hash (1, 3, 4, or 5)
* @return UuidInterface
*/
protected function uuidFromHashedName($hash, $version)
{
$timeHi = BinaryUtils::applyVersion(substr($hash, 12, 4), $version);
$clockSeqHi = BinaryUtils::applyVariant(hexdec(substr($hash, 16, 2)));
$fields = array(
'time_low' => substr($hash, 0, 8),
'time_mid' => substr($hash, 8, 4),
'time_hi_and_version' => str_pad(dechex($timeHi), 4, '0', STR_PAD_LEFT),
'clock_seq_hi_and_reserved' => str_pad(dechex($clockSeqHi), 2, '0', STR_PAD_LEFT),
'clock_seq_low' => substr($hash, 18, 2),
'node' => substr($hash, 20, 12),
);
return $this->uuid($fields);
}
}
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