archive.php

<?php
namespace Bitrix\Main\Engine\Response\Zip;
 
use Bitrix\Main\HttpResponse;
use Bitrix\Main\Text\Encoding;
use Bitrix\Main\Web\Uri;
 
class Archive extends HttpResponse
{
    public const MOD_ZIP_HEADER_NAME = 'X-Archive-Files';
    protected string $name;
 
    protected array $entries = [];
 
    public function __construct(string $name)
    {
        parent::__construct();
 
        $this->name = $name;
        $this->addHeader(self::MOD_ZIP_HEADER_NAME, 'zip');
    }
 
    public function addEntry($archiveEntry): void
    {
        if ($archiveEntry instanceof ArchiveEntry)
        {
            $this->entries[] = $archiveEntry;
        }
        elseif ($archiveEntry instanceof EntryInterface)
        {
            $this->entries[] = $archiveEntry;
        }
    }
 
    private function convertEntryInterfaceToString(EntryInterface $entry): string
    {
        $crc32 = ($entry->getCrc32() !== '') ? $entry->getCrc32() : '-';
        $name = Encoding::convertEncoding(
            $entry->getPath(),
            LANG_CHARSET,
            'UTF-8'
        );
 
        return "{$crc32} {$entry->getSize()} {$entry->getServerRelativeUrl()} {$name}";
    }
 
    public function isEmpty(): bool
    {
        return empty($this->entries);
    }
 
    protected function getFileList(): string
    {
        $list = [];
        foreach ($this->entries as $entry)
        {
            if ($entry instanceof ArchiveEntry)
            {
                $list[] = (string)$entry;
            }
            elseif ($entry instanceof EntryInterface)
            {
                $list[] = $this->convertEntryInterfaceToString($entry);
            }
        }
 
        return implode("\n", $list);
    }
 
    protected function setContentDispositionHeader(): void
    {
        $utfName = Uri::urnEncode($this->name, 'UTF-8');
        $translitName = \CUtil::translit($this->name, LANGUAGE_ID, [
            'max_len' => 1024,
            'safe_chars' => '.',
            'replace_space' => '-',
        ]);
        $this->addHeader(
            'Content-Disposition',
            "attachment; filename=\"{$translitName}\"; filename*=utf-8''{$utfName}"
        );
    }
 
    public function send(): void
    {
        if (!$this->isEmpty())
        {
            $this->setContentDispositionHeader();
            $this->setContent(
                $this->getFileList()
            );
        }
 
        parent::send();
    }
}