Current File : /www/varak.net/nextcloud.varak.net/nextcloud/3rdparty/web-auth/webauthn-lib/src/StringStream.php
<?php
declare(strict_types=1);
namespace Webauthn;
use CBOR\Stream;
use Webauthn\Exception\InvalidDataException;
use function fclose;
use function fopen;
use function fread;
use function fwrite;
use function rewind;
final class StringStream implements Stream
{
/**
* @var resource
*/
private $data;
private readonly int $length;
private int $totalRead = 0;
public function __construct(string $data)
{
$this->length = mb_strlen($data, '8bit');
$resource = fopen('php://memory', 'rb+');
fwrite($resource, $data);
rewind($resource);
$this->data = $resource;
}
public function read(int $length): string
{
if ($length <= 0) {
return '';
}
$read = fread($this->data, $length);
$bytesRead = mb_strlen($read, '8bit');
mb_strlen($read, '8bit') === $length || throw InvalidDataException::create(null, sprintf(
'Out of range. Expected: %d, read: %d.',
$length,
$bytesRead
));
$this->totalRead += $bytesRead;
return $read;
}
public function close(): void
{
fclose($this->data);
}
public function isEOF(): bool
{
return $this->totalRead === $this->length;
}
}
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