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<?php
declare(strict_types=1);
namespace Dotenv\Repository\Adapter;
use PhpOption\None;
final class MultiReader implements ReaderInterface
{
/**
* The set of readers to use.
*
* @var \Dotenv\Repository\Adapter\ReaderInterface[]
*/
private $readers;
/**
* Create a new multi-reader instance.
*
* @param \Dotenv\Repository\Adapter\ReaderInterface[] $readers
*
* @return void
*/
public function __construct(array $readers)
{
$this->readers = $readers;
}
/**
* Read an environment variable, if it exists.
*
* @param non-empty-string $name
*
* @return \PhpOption\Option<string>
*/
public function read(string $name)
{
foreach ($this->readers as $reader) {
$result = $reader->read($name);
if ($result->isDefined()) {
return $result;
}
}
return None::create();
}
}
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