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1 efrain 1 
<?php
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declare(strict_types=1);
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namespace ZipStream\Zip64;
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use ZipStream\PackField;
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/**
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 * @internal
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 */
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abstract class DataDescriptor
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{
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    private const SIGNATURE = 0x08074b50;
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    public static function generate(
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        int $crc32UncompressedData,
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        int $compressedSize,
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        int $uncompressedSize,
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    ): string {
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        return PackField::pack(
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            new PackField(format: 'V', value: self::SIGNATURE),
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            new PackField(format: 'V', value: $crc32UncompressedData),
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            new PackField(format: 'P', value: $compressedSize),
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            new PackField(format: 'P', value: $uncompressedSize),
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        );
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    }
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}