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<?php
declare(strict_types=1);
namespace Dotenv\Repository\Adapter;
use PhpOption\Option;
use PhpOption\Some;
final class ArrayAdapter implements AdapterInterface
{
/**
* The variables and their values.
*
* @var array<string,string>
*/
private $variables;
/**
* Create a new array adapter instance.
*
* @return void
*/
private function __construct()
{
$this->variables = [];
}
/**
* Create a new instance of the adapter, if it is available.
*
* @return \PhpOption\Option<\Dotenv\Repository\Adapter\AdapterInterface>
*/
public static function create()
{
/** @var \PhpOption\Option<AdapterInterface> */
return Some::create(new self());
}
/**
* Read an environment variable, if it exists.
*
* @param non-empty-string $name
*
* @return \PhpOption\Option<string>
*/
public function read(string $name)
{
return Option::fromArraysValue($this->variables, $name);
}
/**
* Write to an environment variable, if possible.
*
* @param non-empty-string $name
* @param string $value
*
* @return bool
*/
public function write(string $name, string $value)
{
$this->variables[$name] = $value;
return true;
}
/**
* Delete an environment variable, if possible.
*
* @param non-empty-string $name
*
* @return bool
*/
public function delete(string $name)
{
unset($this->variables[$name]);
return true;
}
}