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<?php
declare(strict_types=1);
namespace ZipStream;
/**
* @internal
*/
abstract class DataDescriptor
{
private const SIGNATURE = 0x08074b50;
public static function generate(
int $crc32UncompressedData,
int $compressedSize,
int $uncompressedSize,
): string {
return PackField::pack(
new PackField(format: 'V', value: self::SIGNATURE),
new PackField(format: 'V', value: $crc32UncompressedData),
new PackField(format: 'V', value: $compressedSize),
new PackField(format: 'V', value: $uncompressedSize),
);
}
}