<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.6.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Database\Type;
use Cake\Core\Exception\Exception;
use Cake\Database\Driver;
use Cake\Database\Type;
use Cake\Database\TypeInterface;
use Cake\Utility\Text;
use PDO;
/**
* Binary UUID type converter.
*
* Use to convert binary uuid data between PHP and the database types.
*/
class BinaryUuidType extends Type implements TypeInterface
{
/**
* Identifier name for this type.
*
* (This property is declared here again so that the inheritance from
* Cake\Database\Type can be removed in the future.)
*
* @var string|null
*/
protected $_name;
/**
* Constructor.
*
* (This method is declared here again so that the inheritance from
* Cake\Database\Type can be removed in the future.)
*
* @param string|null $name The name identifying this type
*/
public function __construct($name = null)
{
$this->_name = $name;
}
/**
* Convert binary uuid data into the database format.
*
* Binary data is not altered before being inserted into the database.
* As PDO will handle reading file handles.
*
* @param string|resource $value The value to convert.
* @param \Cake\Database\Driver $driver The driver instance to convert with.
* @return string|resource
*/
public function toDatabase($value, Driver $driver)
{
if (is_string($value)) {
return $this->convertStringToBinaryUuid($value);
}
return $value;
}
/**
* Generate a new binary UUID
*
* @return string A new primary key value.
*/
public function newId()
{
return Text::uuid();
}
/**
* Convert binary uuid into resource handles
*
* @param null|string|resource $value The value to convert.
* @param \Cake\Database\Driver $driver The driver instance to convert with.
* @return resource|string|null
* @throws \Cake\Core\Exception\Exception
*/
public function toPHP($value, Driver $driver)
{
if ($value === null) {
return null;
}
if (is_string($value)) {
return $this->convertBinaryUuidToString($value);
}
if (is_resource($value)) {
return $value;
}
throw new Exception(sprintf('Unable to convert %s into binary uuid.', gettype($value)));
}
/**
* Get the correct PDO binding type for Binary data.
*
* @param mixed $value The value being bound.
* @param \Cake\Database\Driver $driver The driver.
* @return int
*/
public function toStatement($value, Driver $driver)
{
return PDO::PARAM_LOB;
}
/**
* Marshalls flat data into PHP objects.
*
* Most useful for converting request data into PHP objects
* that make sense for the rest of the ORM/Database layers.
*
* @param mixed $value The value to convert.
*
* @return mixed Converted value.
*/
public function marshal($value)
{
return $value;
}
/**
* Converts a binary uuid to a string representation
*
*
* @param mixed $binary The value to convert.
*
* @return string Converted value.
*/
protected function convertBinaryUuidToString($binary)
{
$string = unpack("H*", $binary);
$string = preg_replace(
"/([0-9a-f]{8})([0-9a-f]{4})([0-9a-f]{4})([0-9a-f]{4})([0-9a-f]{12})/",
"$1-$2-$3-$4-$5",
$string
);
return $string[1];
}
/**
* Converts a string uuid to a binary representation
*
*
* @param mixed $string The value to convert.
*
* @return mixed Converted value.
*/
protected function convertStringToBinaryUuid($string)
{
$string = str_replace('-', '', $string);
return pack("H*", $string);
}
}